Help plzzz I’ll give brainliest

Help Plzzz Ill Give Brainliest

Answers

Answer 1

Answer:

last one

Explanation:

Answer 2

Answer:

full moon

hope this helps


Related Questions

(i) CH2=CH-CH2-CH=CH,


Give IUPAC name of the compound.​

Answers

Answer:

The IUPAC name of CH3 – CH2 – CH2 – CH=CH2 is Pent-1-ene.

What volume (in L) of water vapor will be

produced from the reaction of 24.65 L of oxygen?

2C2H6(g) + 702(g) —4CO2(g) + 6H2O(9)

Answers

Answer: 21.13 L of [tex]H_2O[/tex] will be produced from the reaction of 24.65 L of oxygen

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

[tex]2C_2H_6(g)+7O_2(g)\rightarrow 4CO_2(g)+6H_2O(g)[/tex]  

According to stoichiometry :

7 moles of [tex]O_2[/tex] give = 6 moles of [tex]H_2O[/tex] vapour  

[tex]7\times 22.4L=156.8L[/tex]  of [tex]O_2[/tex] produce = [tex]6\times 22.4L=134.4L[/tex] of [tex]H_2O[/tex] vapour  

Thus 24.65 L of [tex]O_2[/tex] produce = [tex]\frac{134.4}{156.8}\times 24.65=21.13[/tex] L of [tex]H_2O[/tex] vapour  

21.13 L of [tex]H_2O[/tex] will be produced from the reaction of 24.65 L of oxygen

Answer:

21.13

Explanation:

The bonding and molecular polarity in a molecule of Cl2 is best described as...
a. non polar/polar
b. polar/polar
c. non polar/ nonpolar
d. polar/ ionic

Answers

Answer:

The bonding and molecular polarity in a molecule of CI2 is best described as palar / polar

the taste of acid is sour​

Answers

yes the taste of acid is sour

Explanation:

the acid increase the hydrogen concentration, which provides more ions for the tongue. Because the tongue gains ions, it registers the flavor as sour.

Which alkaline earth metal has the highest ionization energy? Refer to the periodic table.

calcium
magnesium
barium
strontium

Answers

I’m pretty sure the answer is Barium. I hope it helps.

The highest ionization energy of alkaline earth metal is calcium. Therefore, option (A) is correct.

What is the ionization energy?

The ionization energy can be described as the minimum energy that an electron has to absorb to come out of the effect of the nucleus of a gaseous atom or ion.

It tells about the reactivity of chemical compounds and determines the strength of chemical bonds. The units of ionization energy are electronvolts or kJ/mol.

Ionization energy measures the difficulty in removing an electron from an atom or ion and the loss of electron occurs in the ground state of the chemical species.

According to the general configuration of alkaline earth metals, they contain two electrons in their valence shell. The atomic size of alkaline earth metals increases as we move down the group. The electronegativity and effective nuclear charge of alkaline earth metals decrease.

The electron can easily be lost from the atom as we move down the group. Therefore, calcium present at the top of the group has the highest ionization energy.

Learn more about  ionization energy, here:

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pleaseeeeeeeeeeee help me asap

my question is
'Scientists believe another Pangea is in Earth’s future. Explain why the evidence of tectonic plate motion supports this belief.'


help please and thank you

Answers

Answer:

eu nu insteleg ce zite

Explanation:

Answer:

We know that the movement of tectonic plates is a continuous process. Divergent plates cause the ocean floor to expand. Because of slab pull, subduction, and other processes, the landmasses keep drifting. Because of these movements, continents are continually moving apart from each other. It’s possible that one day they will collide to form a giant landmass and become another Pangea.

Explanation:

here^^

Chemical Reaction Type of reaction

2NaCl 2Na + Cl2 _________________________

CaCl2 + F2 CaF2 + Cl2 _________________________

AgNO3 + KCl AgCl + KNO3 _________________________

N2 + H2 2NH3 _________________________

C3H8 + 5O2 3CO2 +4 H2O _________________________

Answers

Answer:

Explanation:

2NaCl 2Na + Cl2         synthesis reaction

CaCl2 + F2 CaF2 + Cl2          oxidation-reduction

AgNO3 + KCl AgCl + KNO3      precipitation reaction

N2 + H2 2NH3      i dont know

C3H8 + 5O2 3CO2 +4 H2O Balanced Chemical Reactions and the Conservation of Mass

HELP ASAP!!! please chemistry sucks

Answers

I believe it’s 146.06 g/mol

hope this helps! ^^
By adding all of the elements by their amount, the molar mass comes out to be 146. G/mol

Calculate the new volume in liters of a 0.500 L water bottle at 25.0 degrees when the plastic bottle is submerged in ice water at 1.00 degree Celsius.

Answers

Answer:

0.02L

Explanation:

Using the formula V1/T1 = V2/T2

Given

V1 = 0.5L

T1 = 25 degrees

T2 = 1 degree

V2 =?

Substitute

0.5/25 = V2/1

Cross multiply

25V2 = 0.5

V2 = 0.5/25

V2 = 0.02L

Hence the new volume will be 0.02L

Which of the following statements explains how the fossil record provides evidence that evolution has occurred?

Question 1 options:

A. The fossil record shows how the offspring of many different species are very similar


B. The fossil record shows the exact cause of physical and behavioral adaptations of organisms


C. The fossil record includes fossils of every organism that has ever lived


D. The fossil record shows how related organisms changed through evolution

Answers

I think it will be letter A tbh
Hope this helps you out

Help me out guys

:)

Answers

Answer:

2 chloride ion, Cl¯

Explanation:

The formula for calcium chloride is CaCl₂.

Next, we shall write the balanced dissociation equation for calcium chloride, CaCl₂. This is illustrated below:

CaCl₂ (aq) —> Ca²⁺ + 2Cl¯

From the balanced equation above,

We can see that calcium chloride, CaCl₂ contains 1 calcium ion, Ca²⁺ and 2 chloride ion, Cl¯.

Therefore, we can conclude that for every 1 calcium ion, Ca²⁺, there are 2 chloride ion, Cl¯.

The picture to the right is the crystal of a
diamond. Circle three individual atoms of
carbon
Are these the same type or different
atoms?

Answers

Answer:

Circle Any 3 Red Spheres

Explanation:

All of these atoms are Carbon (C), as diamond is a network solid composed entirely of Carbon.  They are all the same.

How do you calculate the molar mass of a compound?
a
b
Add all the subscripts.
Find the molar mass of each individual element, multiply that molar mass number by
the element's subscript in the formula, and then add together.
Add 5 grams for each element in the formula.
Multiply the the subscripts by the atomic number.
С
d

Answers

Answer:

Find the molar mass of each individual element, multiply that molar mass number by the element's subscript in the formula, and then add together.

Explanation:

KMnO4 + H2S + HCl KCl + MnCl2 + H2O + S8 Did Cl change oxidation number? Yes, no Did Oxygen change oxidation number? Yes, no Did H change oxidation number? Yes, no Did Mn change oxidation number? Yes, no Did S change oxidation number? Yes, no oxidizing agent = K, O, Mn, S reducing agent = Mn, H, Cl, S

Answers

Explanation:

KMnO4 + H2S + HCl --> KCl + MnCl2 + H2O + S8

Did Cl change oxidation number?

The oxidation  number of Cl in Reactant side is -1

The oxidation number of Cl in product side is -1

NO

Did Oxygen change oxidation number?

The oxidation number of O in Reactant side is -2

The oxidation number of O in product side is -2

NO

Did H change oxidation number?

The oxidation number of H in Reactant side is 1

The oxidation number of H in product side is 1

NO

Did Mn change oxidation number?

The oxidation number of Mn in Reactant side is +7

The oxidation number of Mn in product side is +2

YES

Did S change oxidation number?

The oxidation number of S in Reactant side is -2

The oxidation number of S in product side is 0

YES

Oxidizing agent (element with decrease in oxidation number) = Mn

Reducing agent (element with Increase in oxidation number) = S

What charge does a covalent bond have?

Answers

Basically a covalent bond would have been made based on two atoms so that it can collaboratively set a trace of more electrons. Although there is no atom that is zero which if it had that then it would considerably be a net charge which it is not from this problem. What makes it unique about it is that this attractive force from creating the bond of the electrons that would be purposely activated that are the nuci for constructive used into two atoms.

I will give brainliest and so many points

Answers

Answer:are there any answer option? cause i know but i have to make sure

Explanation:

9. I have the lowest electronegativity of the nonreactive elements. My family name is ____________. I am classified as a ___________. I have _____________ valence electrons.

Answers

Answer:

I have the lowest electronegativity of the nonreactive elements. My family name is alkali metals. I am classified as a reactive metal. I have one valence electrons.

Explanation:

Electronegativity refers to the ability of the atoms of an element to attract electrons to itself. Based on their nature, non-metals are electronegative elements whereas metal are electropositive as they have a tendency to give up their electrons rather than attract electrons to themselves.

In the periodic table of elements, non-metallic character, and hence, electronegativity increases from left to right across a period, and decreases down a group. The most electropositive element is fluorine. On the other hand, electropositivity decreases across a period from left to right but increases on going down a group. Hence, the most electropositive element is Francium. This also means that Francium is the least electronegative element,

francium belong to the group 1A of the periodic table which are the most reactive metals. The family of group 1A elements are known as alkali metals. They possess only one valence electron which they easily give up to form univalent positive ions or cations. Francium is a radioactive element.

Calculate how many grams of Aluminum are needed to produce 21.6 grams of Aluminum oxide (Al2O3).

4Al + 3O2 → 2Al2O3

i need this like rn please.

Answers

Answer:

0.347

Explanation:

Al is the limiting reagent.

Explanation:

The stoichiometry of the reaction is such that 4 moles of Al are required for every 3 moles of diatomic oxygen. This means that if the ratio of Al to diatomic oxygen is greater than 4/3, then the oxygen is the limiting reagent. If the ratio of Al to diatomic oxygen is less than 4/3, then Al is the limiting reagent.

The problem state that the ratio of Al to diatomic oxygen is

0.32

0.26

=

16

13

=

48

39

<

52

39

=

4

3

The ration of Al to diatomic oxygen is less than 4/3, so Al is the limiting reagent.

We can also see this if we ask the question "How much Aluminum" is required to completely react 0.26 moles of diatomic oxygen??

0.26

moles

O

2

×

4

moles

A

l

3

moles

O

2

0.347

moles

A

l

So it would take 0.347 moles of Al to completely react with all of the oxygen, however there is only 0.32 moles of Aluminum present, so there is not enough Al to react with all of the oxygen, and so we say that the Al is the limiting reagent.

The mass of Aluminum are needed to produce 21.6 grams of Aluminum oxide (Al₂O₃) is

What is mass?

Mass of any element is equal to the product of its number of moles and molar mass.

For the compound, Aluminum oxide (Al₂O₃)

The atomic masses of Aluminum is 23 and oxygen is 16.

Molecular or molar mass = ( 2 × 23 ) + ( 3 × 16 ) units

M = 46 + 48 = 94 units

The mass of Aluminum in 1 mole of aluminum oxide ,46 grams in 94 grams

Mass of Aluminum in the given 21.6 g of Aluminum oxide will be;

94 grams of Aluminum oxide contains 46 grams of Aluminum.

21.6 grams of Aluminum oxide will contain ( 46 / 94 ) × 21.6 = 10.57g of Aluminum.

Therefore, 10.57g of Aluminum are needed to produce 21.6 grams of Aluminum oxide (Al₂O₃)

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Which characteristic is true of sexual reproduction but not of asexual reproduction?

Answers

Answer:

Sexual Reproduction involves two different parties

Explanation:

Asexual is the opposite, so it uses no one else to reproduce

Answer:

Sexual reproduction produces diverse offspring .

Sexual reprodction produces more variations whereas asexual reproduction usually produces very similar organisms

Explanation:

2. Landmasses and bodies of water affects typhoon. Whichof thesedifferentiate the characteristics of landmasses and bodies of water?

A. Landmasses have more water vapour than bodies of water,

B. Landmasses produce strong wind and heavy rain while bodies of
water cannot.

C. Landmasses strengthen typhoon while bodies of water disrupt
the spin of a typhoon.

D. Landmasses disrupt the spin of a typhoon while bodies of water
strengthen typhoon.

Answers

Answer:

i think

D. Landmasses disrupt the spin of a typhoon while bodies of water

strengthen typhoon.

4. A separating funnel can be used to separate a mixture of two________ liquids. *
a) miscible
b) homogenous
c) immiscible
d) distilled

Answers

Answer:

d) distilled

Explanation:

A separatory funnel, also known as a separation funnel, separating funnel, or colloquially sep Funnel and fractionating Funnel. , is a piece of laboratory glassware used in liquid-liquid extractions to separate (partition) the components of a mixture into two immiscible solvent phases of different densities.

Answer:

d) distilled

Explanation:

Correct!!!

Which two types of rock could form after other rock melts into liquid
magma?
6 of 10 QUESTIONS
Sedimentary
Metamorphic
Intrusive igneous
Extrusive igneous

Answers

Answer:

The answer is intrusive igneous and extrusive igneous.

Explanation:

I’ve done the question on A P E X

What is the systematic name and molecular formula of these two:

Answers

Answer:

2,4-di Ethyl-2-methylpentane

C10H22

3,4 dimethyl heptane

C9H20

Explanation:

the red is neutrons and the blue is protons...I'm pretty sure.

Answers

yes it is. the black ones are electrons as well

Answer:

Beryllium atom

Explanation:

What happens when the pressure of a gas is decreased?
A. The number of molecules increases.
B. The diffusion rate increases.
C. The temperature increases.
D. The volume increases.

Answers

Answer:

The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

Explanation:

Answer:

D. The volume increases.

Explanation:

100%

1. What do microorganisms share in common?​

Answers

Answer:

Bacterial species are typified by their diversity. There are three notable common traits of bacteria, 1) lack of membrane-bound organelles, 2) unicellular and 3) small (usually microscopic) size.

Explanation:

What Are the Characteristics Common to All Bacteria?

Single-Celled. Perhaps the most straightforward characteristic of bacteria is their existence as single-celled organisms. ...

Absent Organelles. ...

Plasma Membrane. ...

Cell Walls. ...

DNA.

A student dissolves 13. g of stilbene (C14H12) in 100. mL of a solvent with a density of 0.85 g/mL. The student notices that the volume of the solvent does not change when the stilbene dissolves in it.
Calculate the molarity and molality of the student's solution. Be sure each of your answer entries has the correct number of significant digits.

Answers

Answer:

Molarity = 0.72M

Molality = 0.85M

Explanation:

Molarity and molality are two measures of molar concentration, and they can be calculated as follows:

Molarity = number of moles/volume of solvent

Molality = number of moles/mass (kg) of solvent

Mole = mass/molar mass

Molar mass of stilbene (C14H12) = 12(14) + 1(12)

= 168 + 12

= 180g/mol

mole of stilbene = 13/180

mole = 0.072mol

Volume = 100mL = 0.1L

molarity = 0.072/0.1

Molarity = 0.72M

Molality = number of moles ÷ mass (kg) of solvent

To get mass of solvent, we use;

Density = mass/volume

Mass = density × volume

Mass = 0.85g/mL × 100mL

Mass = 85g

Mass in kg = 85/1000 = 0.085kg

Molality = 0.072/0.085

Molality = 0.847M

Molality = 0.85M

What is the molarity of a solution that has 2.87 moles of NaCl in 5020 mL of solution?

Answers

2.87 mol/5.020 L (converting mL to L) = .572M

Based on graph 4 across a period the electronegativity​

Answers

4


Answer with explanation
Can you please type the question here?

Look at the diagram below.
+
Will this atom gain or lose electrons to achieve a stable configuration?
It will gain electrons to fill its outer shell.
It will lose electrons to be left with a full outer shell.
It depends on the situation.
It will neither lose nor gain electrons.
ASAP

Answers

Answer:

it will gain electrons to fill its outer shell

Explanation:

This element is boron which has 5 electrons.

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In a lab experiment, 3400 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 8 hours. How long would it be, to the nearest tenth of an hour, until there are 13700 bacteria present? Karla is selling tickets for a high school play. Child tickets cost $7 and adult tickets cost $13 she sells 180 tickets and collects $1830 Setup a system of equations using C for number of child tickets and A for number of adult tickets to find the number of each ticket sold Spanish help? Thanks, only 2 questions ~ Use the correct form of "el" "la" "los" or "las" Please answer #16. Write an equation of the line that passes through the given point and is perpendicular to the graph of the given equation. Please answer ASAP! Thank you:) Every three years the population of one part of Brooklyn is recorded.In 2014 there was a population of 10,500 people.From 2014 to 2017 the population increased by 22%.From 2017 to 2020 the population decreased by 10%.What was the population of this area in 2020? (4X + 7) X [5(X - 40)] share 26 amongst three people in the ratio 6:3:4 Someone help!! Im reading the boarded window By Amber Bierce. Were you surprised by the twist? If so, why? If not, what should the author have done tomake the ending more surprising and effective?What was your experience in reading this story? Did it evoke fear or physically have aneffect on you? Why or why not?Create a surprise ending to an original story. You don't need to write a whole storyjustthe twist ending. Begin with a short summary of the setting, characters, plot, and conflictsin your story. Then, write an ending to your story with an unexpected twist using thetechniques learned in this lesson. You should only need two or three fully developedparagraphs. Be sure to label at least three of the techniques used to demonstrate whatyou've learnedCreate an alternative ending for the story you read in the lesson. Summarize anynecessary changes you made in the action of the story for your surprise ending to makesense. Fully develop your alternative ending in two or three paragraphs. Demonstrate whatyou've learned in this lesson by labeling at least three techniques you used. 3. Given the statement "x - 4 is a factor of f(x)= 5x* 22x - 2x2 25x +4". explain how to verify thestatement is accurate. what is the percent composition of hydrogen in cane sugar they have completed the work. change into passive voice NEED HELP ASAP GIVING 50-100 POINT BRAINLEST:Write a real world situation that could be represented using the following equation:11x = 385 4.Mrs. Derry is a retired receptionist living on a fixed income in a small apartment. Her power was recently cut-off because shes been forgetting to pay her bill lately. She has trouble getting to the grocery store because her son took away her car after a few minor accidents. What organizations in your community might help Mrs. Derry to enjoy her retirement years? subgnero de la lrica griega que crea una reflexin sobre lo emifero (de corta duracin)de la vida PLEASE PLEASE PLEASE HELP I WILL MARK BRAINLIEST!!!!!Working in cotton mill factories led to what common problems?Group of answer choicesA.) busted knucklesB.) lung problemsC.) back and neck problemsD.) loss of memory and balance Find the values of x and y - i will give brainliest if right Which are pairs of vertical angles? \A = COB & COAB = BOD & AODC = COB & AODD = AOD & AOC At the beach the cost for renting a surf board is 39 dollars for 3 hrs. At this rate that is the charge for 8 hrs. Sameer woke up one morning and saw frost on the windows. It was -7C outside. Later in the day, the frost melted. At 3 p.m. it was 2C outside. Which expression represents the difference between the two temperatures? A bus travels with an acceleration of 2m/s2 and reaches a speed of 45km/h in 5 seconds What was the initial velocity of the bus in m/s?Please can you help me?