Chemistry High School

Plz help answer this question

Plz Help Answer This Question

Answers

Answer 1
a) compound
b) mixture
c) element
Answer 2

Answer:

A compound

B mixture

And C Element

Explanation:

Related Questions

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?

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¯.

1. What are commonly called as "shooting stars"?
A. asteroids
B. comets
C. meteors
D. meteorites

2. What are found in the circular or somewhat like "doughnut-shaped"
region between Mars and Jupiter?
A. asteroids
B. comets
C. meteors
D. meteorites

3. Which Near-Earth Objects (NEO) are found on the Kuiper Belt and Oort
Cloud?
A. asteroids
B. comets
C. meteors
D. meteorites

4. What are comets made of?
A. dust only
B. metal only
C. dust and metal
D. dust, metal, and ice

5. What do you call the shining "head" around a comet?
A. coma
B. crown
C. halo
D. ring​

Answers

Answer:

I hope I can help you

I hope I can help you

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:

2. A sample of oxygen gas is placed in a rigid 1.5L glass container at STP. If the gas is
heated to 100 degrees (Celcius) what is the new pressure in mmHg?

Answers

The new pressure : P₂ = 1038.39 mmHg

Further explanation

Given

1.5 L container at STP

Heated to 100 °C

Required

The new pressure

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

So P₁ =  1 atm = 760 mmHg

T₁ = 273 K

T₂ = 100 °C+273 = 373 K

Gay Lussac's Law  

When the volume is not changed, the gas pressure is proportional to its absolute temperature  

[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

Input the value :

P₂=(P₁.T₂)/T₁

P₂=(760 x 373)/273

P₂ = 1038.39 mmHg

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!!!

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.

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

parasitic protists passed by mosquitoes causes this disease

Answers

Answer:

Malaria

Explanation:

Mosquitos mainly carry Malaria since the dawn of men.

Answer:

malaria

Explanation:

"Malaria" is a mosquito-borne illness that is caused by a parasitic protist called "Plasmodium protozoa." These parasites are carried by mosquitoes. Once a mosquito bites a human, it creates an opening for the parasites to enter. The parasites then become harmful once they enter the human body. They infect the human's Red Blood Cells (RBCs), which causes several symptoms such as fever, fatigue, headache, cough, nausea, etc.

I will give brainliest and so many points

Answers

You would take 10 minus one to get 9 and divid it by 3 to get 3. You take 7 plus 1 to get 8 and divided 16 to get 2.

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%

Barium chloride solution was used to test for sulfate ions in the presence of dilute hydrochloric acid. What color precipitate would
form if sulfate ions were present?

Answers

Answer:

white

Explanation:

A white precipitate of barium sulfate forms if sulfate ions are present. The hydrochloric acid is added first to remove any carbonate ions that might be present - they would also produce a white precipitate, giving a false positive result. Barium nitrate solution can be used instead of barium chloride solution

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:

pls help 6th grade science

Answers

Answer:

C.)

Explanation:

I also saw this question on Brainly! Hope this helps!

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

is Fe2(CO3)3 soluble?

Answers

Yes it’s a soluble because the carbonate should dissolve in any strong acid with much effervescence

what is the correlation between the number of mole of ions in the solution and the freezing point

Answers

Answer:

13.9

Explanation:

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:

What are calories used for?

hurry pls!

Answers

Answer:

Calories are used for physical activity.

Explanation:

Calories provide energy for consumers. You may notice when you drink or eat, you gain more energy. This is because calories are stored in our drinks and foods.

Answer:

They are

Explanation:

They are used to make people obese. The government uses calories to make people weak and unhealthy. For example, McDonalds is known to have many calories in their food. I hate the government.

11. Acids are described as being because they dissolve some metals.​

Answers

Answer:

Corosive

Explanation:

CORRECT

Answer:

Corosive

Explanation:

Hope this will help

25.0(g) of pentane(C5H12) is combined with excess oxygen

Answers

Answer:Hlo

Explanation:How are you?

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.

Identify the reaction
In pic

Answers

Single displacement (I did some googling so if it's wrong I'm so srry)

Guys help please!! any five effects of heat!!​

Answers

[tex] {\huge {\underline {\underline {\bold {\blue{Effects \: of \: Heat}}}}}}[/tex]

Expansion of particles of substances. Increase in temperature.Change in state.Change in physical propertyIt may bring out chemical changes.

__________________________________

[tex] \tt\underline\orange{hope \: it \: helps}[/tex]

Which function is not associated with cartilage?

Answers

Answer:

Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural). Some fibrocartilage such as the meniscus of the knee does however have blood supply in part. Nutrition is supplied to the chondrocytes by diffusion.

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:

true or false
sugar melting an example of oxidation
and
water evaporating

Answers

Answer:

false i think

Explanation:

How many grams of Ag are produced if I start the reaction with 5.5 mol Cu?

Equation given:
Cu + 2AgNO3 -> 2Ag + Cu(NO3)2

Answers

Answer:

9.34 g Ag

Explanation:

What happens in a
neutralisation reaction.

Answers

Answer:

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. Salts are also formed in this reaction.

Explanation:

Other Questions
Danah is planting a second strawberry patch andwants it to have an area of exactly 1 square meter.Which of the following could be the width and lengthof its borders? Circle the letter for all that apply.A 2-meter wide and -meters longB {-meter wide and meters long-meter wide andmeters longD meter wide and a meters longIf I find the area ofeach differentshape strawberrypatch, I can figureout which optionshave an area of1 square meter.Look at problem 5. If Danah wants her strawberrypatch to be exactly 1 square meter, can the length ofher strawberry patch be greater than 1 meter? Explain. What is the perimeter of ABCD? I need assistance in this math A dot plot is shown. Sobota Corporation has provided the following partial listing of costs incurred during August: Marketing salaries $ 51,600 Property taxes, factory $ 15,700 Administrative travel $ 104,400 Sales commissions $ 54,700 Indirect labor $ 42,300 Direct materials $ 168,800 Advertising $ 138,000 Depreciation of production equipment $ 41,200 Direct labor $ 90,900 Required: a. What is the total amount of product cost listed above Are these teams?5x + 8lik teams? Determine what happens in this reaction.S + Cl2 SCl2 A school with 1,273 students has many after-school activities. One of these activities is gymnastics. If 47 students participate in the gymnastics program, what percent of the student population participates in gymnastics? Round your answer to the nearest tenth of a percent.A.2.7 percentB.4.2 percentC.4.4 percentD.3.7 percent Question 14 of 25Which of the following is an equation of a line perpendicular to the equationy = -6x +7?O A. y = 6x + 3O B. y=-x+3O C. y = 5x+3O D. y =-6x + 3SUBMIT example of small group discussion 5 example Ionic bonds are formed between _____ and involved the ____ of ions : (3 :,,) Definiti: a)Marimile Fizice Vectoriale b)Fortele Concurente Work-based learning can be defined as educational experiences that focus on 50 points if its correct with brainliest!! How many times smaller will a number become if you decrease it by 20%. What part of speech is " On Saturdays I work from nine to five "A . VerbB . PrepositionC . Adverb can someone please help its due soon.ill give brainliest! The following selected information was extracted from the 20x1 accounting records of Lone Oak Products:Raw material purchases ................................ $ 175,000Direct labor ......................................................... 254,000Indirect labor ...................................................... 109,000Selling and administrative salaries .................. 133,000Building depreciation ........................................... 80,000Other selling and administrative expenses ..... 195,000Other factory costs ............................................. 344,000Sales revenue ($130 per unit) ........................ 1,495,000Seventy-five percent of the companys building was devoted to production activities; the remaining 25 percent was used for selling and administrative functions.Inventory data: January1 December31Raw material 15800 18200Work in process 35700 62100Finished goods 111100 97900 The January 1 and December31 finished-goods inventory consisted of 1,350 units and 1,190 units, respectively.Required:1. Calculate Lone Oaks manufacturing overhead for the year.2. Calculate Lone Oaks cost of goods manufactured.3. Compute the companys cost of goods sold.4. Determine net income for 20x1, assuming a 30% income tax rate.5. Determine the number of completed units manufactured during theyear. Sparkies charge $31.50 per hour for labor, but with tax, it comes to 33.45.What is the tax percentage? Please someone answerEnter the word that correctly completes the sentence.Nobody came.No vino_____.