Help plzzz I don’t get to

Help Plzzz I Dont Get To

Answers

Answer 1
I think the answer is the last one but not sure

Related Questions

What is the mass of 2.16 moles of sulfur dioxide (SO2)?

Answers

Answer:

138 g SO₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[Given] 2.16 moles SO₂

[Solve] grams (mass) SO₂

Step 2: Identify Conversions

[PT] Molar Mass of S - 32.07 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of SO₂ - 32.07 + 2(16.00) = 64.07 g/mol

Step 3: Convert

[DA] Set up:                                                                                                     [tex]\displaystyle 2.16 \ mol \ SO_2(\frac{64.07 \ g \ SO_2}{1 \ mol \ SO_2})[/tex][DA] Multiply/Divide [Cancel out units]:                                                         [tex]\displaystyle 138.391 \ g \ SO_2[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

138.391 g SO₂ ≈ 138 g SO₂

What happens to the total number of carbon atoms on Earth? Does the total get larger, does it get smaller, or does it stay the same?

Answers

Answer:

It stays the same.

Explanation:

C5H12 + O2 = CO2 + H2O
If 84.3 grams of C5H12 react according to the above equation and the % yield is 94% find the actual yield of grams of carbon dioxide

Answers

Answer: 241.6 grams of CO2

Explanation: you take 84.3 grams C5H12 and divide it by 72.15 grams of C5H12(which is the molar mass) you take that answer and calculate the mols of CO2 by multiplying the 1.168 you got before and multiply it by 5. You take the answer you get from that and multiply it by the molar mass of CO2 and get the theoretical yield and then you just plug it in. 94= (x/257.02)x100 and solve to find x which is the actual yield.

If 5.025 grams of NaOH are dissolved in 2.4 liters of water, what is the Molarity of the solution?

Answers

Answer:

0.052 M.

Explanation:

Hello!

In this case, since the molarity is computed by dividing the moles of the solute by the volume of the solution in liters (M=n/V), we first need to compute the moles in 5.025 grams of NaOH as shown below:

[tex]n=5.025g*\frac{1mol}{40.0g}\\\\n=0.126mol[/tex]

In such a way, we compute the molarity as show below:

[tex]M=\frac{0.126mol}{2.4L}\\\\M=0.052M[/tex]

Best regards!

16. Copper is made by the electrolysis of copper sulfate solution
Look at the diagram of the apparatus used in this electrolysis.
6 volt DC
power supply
Copper sufate solution
Carbon (graphtel electrodes
Desenbe what you would see at each of the electrodes

Answers

Answer:

SORFRRRRRRRRRRRRY!

Explanation:

As a roller coaster goes downhill.

A. kinetic energy is converted into potential energy

B. potential energy is converted into kinetic energy

C. electrical energy is converted into potential energy

D. potential energy is converted into electrical energy

Answers

Explanation:

C electrical energy is converted into potential energy

Answer:

I can confirm it is, Potential energy is converted into kinetic energy.

Explanation:

Me without you is like a nerd without braces, A shoe without laces, aSentenceWithoutSpaces.

Answers

Answer:

LOL

Explanation:

Can any wan help pls pls

Answers

Answer:

1) food molecules enter receptors .....

2) The sensory receptors sends the message....

3) The message reaches the brain

4) the brain procces the information it recieved...

5) The brain stores the info  ...

6) The brain retrieves the info . ....

(I hope its clear ! I hope its right too ;) )

are people partially responsible for acid rain? why or why not

Answers

Answer: Because They fall back to earth in the form of rain, sleet, hail, snow and dust. Most acid rain is caused by humans in the form of burning of fossil fuels. A very small percentage of acid rain is caused by natural causes such as volcanoes or wildfires.Human activities are the main cause of acid rain. Over the past few decades, humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere. ... In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air.

Explanation:

Whose atomic theory explains how atoms emit (release) and absorb light?
O Bohr's
O Dalton's
O Rutherford's
O Thomson's

Answers

Answer:

Bohr's model of hydrogen atom

I hope this answer is correct

Answer:

Bohr's

Explanation:

There are six elements that are common to all

Answers

Answer:

earth air water

Explanation:

I need help with both parts, ill give brainliest and 30 points

Part A: What changes does sugar undergo when heated in a spoon over the flame?

Select one:
A. A physical change, then a chemical change
B. Two physical changes
C. Two chemical changes
D. A chemical change, then a physical change


Part B: What evidence from the experiment and data table best supports your answer to Part A? Use information from the stimulus material and your knowledge of science to support your answer. In your answer, be sure to:

Desribe the evidence that supports your answer to Part A.
Provide your reasoning why that evidence supports your answer to Part A.

Answers

Answer:

part a=A. A physical change, then a chemical change

part b:evidence

without physical change any sorts of chemical change do not take place.

for example: when sugar is heated on spoon the physical change takes place in sugar .sugar starts to form liquid from solid.

Answer:

Part A. C would be your answer I think

Sugar is made of carbon, hydrogen and oxygen atoms. When heated over a candle, these elements react with the fire to turn into a liquid. The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot.

Part B. I don't know I just think of the answer... Meaning I'm good and science, Chemistry and all that good stuff ;-;

Explanation:

What is a membrane?
A: Another term for a cells nucleus

B: a sort of “skin that encloses something

C: A type of genetic material

D: A single-called organism

Answers

B I think, it has layers that protects the cells nucleus

The energy associated with a current is called____________

(A) mechanical energy
(B) magnetism
(C) geothermal energy
(D) electrical energy

Answers

Answer:

D. Electrical energy

Explanation:

I assume you are talking about an electrical current.

(These are by what I know and are simplified, not an exact definition)

A. Mechanical energy is energy that something has because of motion.

B. Magnetism is the attracting and repulsing forces between magnets.

C. Geothermal energy is heat inside of the Earth. Used as source of power.

D. Electrical energy is the result of an electric charge.

How many moles are contained in 7.88 x 10^24 atoms of Iron

Answers

Answer:

1.31 × 10^47

Explanation:

1 mol of Fe =

[tex]1 \: mol \: of \ fe = 6.02 \times 10 ^{23} \ \\ x \: mol \: offe \: = 7.88 \times {10}^{24} \\ \\ \\ so \: 7.88 \times {10}^{24} \div 6.02 \times {10}^{23} \\ \\ x = 1.31 \times {10}^{47} [/tex]


Naming lonic Compounds
Name the following lonic Compounds using the lonic naming rules. Remember, place the metal's name
first, followed by the non-metal element, replacing the ending with ide"
1.SrBr,
2.NaCl
3. Mgs
4. LIP
5. Ko
6. Ca N,
7. Balz

Answers

Answer:

1.storantium bromide

2.sodium chloride

3.magnesium sulphide

4.lithium polymer

5.potassium hydroxide

6.calcium nitride

7.it decomposition of tetrafluroborates and hexaflurophosphates

Why do not all rock types contain fossils?

Excessive heat and pressure can destroy fossils.
Fossils can only be created in certain places around the world.
Fossils cannot be created near volcanoes.
Fossils are too large to be found in igneous and metamorphic rocks.

Answers

Answer:

Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions. Generally it is only sedimentary rocks that contain fossils.

Explanation:

Hope it helps, some how.

Match the following vocabulary words with the correct definitions.

1. amount of matter in an object

2. anything which has mass and occupies space


3. measurement of the pull of gravity on an object


4. molecule with different atoms chemically united


5. chemical combination of two or more atoms


6. smallest unit of matter


Compound
Matter
Weight
Mass
Atom
Molecule

Answers

Answer:

1 mass

2 matter

3 weight

4 molecule

5 compound

6 atom

Question 3 (0.05 points)

Fixed metals are metals in representative elements, plus three metals in transition

elements: Zn, Ag, Cd. Variable metals are metals in transition elements, except Zn,

Ag, and Cd. What is the different between the names of ionic compounds containing

fixed metal and those containing variable metals?

A) Ionic compounds containing variable metals should have Roman numerals

CD B) lonic compounds containing fixed metals should have prefixes

C) lonic compounds containing fixed metals should have Roman numerals

Pleaseeeeeee helppppppp

Answers

Answer:

A) Ionic compounds containing variable metals should have Roman numerals

Explanation:

The correct option is;

A) Ionic compounds containing variable metals should have Roman numerals

This is because these variable metals have variable oxidation states and charges. Hence, to be able to distinguish between compounds containing the same  element but different charges, the roman numerals is used. For example;

FeCl₃ - Iron(III) Chloride

FeCl₂ -  Iron(II) Chloride

which is colder, -30.0 F or 225.0 K?

Answers

Answer:

-30.0 F

Explanation:

225 K is - 48.15 Celsius

-30.0 F is - 1 Celcius

A nickel is placed in a cup of boiling water. Predict whether a solution will form.


I really don’t know

Answers

I think the copper could melt to cup and the water would smell like rust

If 0.332 mol of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction?

Answers

Answer:

53.6 g

Explanation:

Step 1: Write the balanced equation

2 Zn + Pb(SO₄)₂ ⇒ 2 ZnSO₄ + Pb

Step 2: Calculate the moles of ZnSO₄ produced from 0.332 moles of Zn

The molar ratio of Zn to ZnSO₄ is 2:2. The moles of ZnSO₄ produced are 2/2 × 0.0332 mol = 0.0332 mol.

Step 3: Calculate the mass corresponding to 0.332 moles of ZnSO₄

The molar mass of ZnSO₄ is 161.44 g/mol.

0.332 mol × 161.44 g/mol = 53.6 g

This is IXL pls hurry pls! SOS major

Answers

Answer:

the same as

Explanation:

that's what makes the most since to me but i may be wrong

newtons 1st law is also called what?

Answers

Answer:  Newton's first law is often called the law of inertia

Explanation:

how does a decrease in potential energy during a chemical rwaction relate to the temperature of the surroundings​

Answers

Answer: If the potential energy of the reaction system decreases, then kinetic energy in the surroundings increases and the temperature of the surroundings rises

Explanation:

The decrease in the potential energy results in an increase in the temperature of the system and surroundings.

Mechanical energy has been described as the sum of the kinetic and the potential energy in the system. With the increase in the potential energy, there has been a decrease in the kinetic energy and vice versa.

The decrease in the potential energy results in an increase in the kinetic energy of the system. The kinetic energy has been termed as the energy of performing work. The rise in the kinetic energy results in an increase in the work done in the system and there has been an increase in the temperature of the system.

Thus, the decrease in the potential energy results in an increase in the temperature of the system and surroundings.

For more information about the potential energy, refer to the link:

https://brainly.com/question/21288807


What is the number of orbitals in an atom of radon

Answers

86 elections so 43 orbitals

What property of water is primary for living organisms? (SC.6.E.7.4) *


It is odorless.

It does not conduct electricity.

It is tasteless

It is liquid at most temperatures on Earth.




*20 points* I wil mark brainliest

Answers

Answer: it is liquid at most temperatures on earth.

Step-by-step explanation:

Answer:

It is liquid at most temperatures on Earth.

What is it called when two or more atoms are chemically bonded together?
a.Electron
b.Two atoms
c.Molecule
d.Material

Answers

Answer:c

Explanation: A molecule is two atoms bonded together

volcanoes tend to erupt at places where

A two plates collide
B two plates rube past each other
C one plate move under another
D one plate moves away from another

Answers

Answer:

Explanation:

b. rub past each other.

Answer:

When 2 plates collide

Explanation:

My mom is a science teacher

100 points to whoever can give me seinen manga suggestions. Vagabond, Berserk, Oyasumi Punpun, Homunculus, 20th Century Boys are some I’ve already read. Avoid those

Answers

Explanation:

sorry I really need the points in so sorry have a good day

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