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denis-greek [22]
3 years ago
8

Answer the multiple choice question below

Chemistry
2 answers:
Otrada [13]3 years ago
8 0

Answer:

flammability evaporation

stira [4]3 years ago
4 0
Yo bro like come on

Come on down for my dog like

A
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At 304 K, a 9.6 L tank contains 1.9 moles of H2 gas under an unknown pressure in atm. What is the pressure of the gas in the tan
ratelena [41]

Answer:

The pressure is 4.939 atm

Explanation:

As we know

PV = nRT

where P is the pressure

V is the volume

n is the total number of moles

R is the gas constant

and T is the temperature

Substituting the given values we get -

P * 9.6 = 1.9 * 0.0821 *304\\P = 47.420/9.6\\P = 4.939

The pressure is 4.939 atm

8 0
3 years ago
Read 2 more answers
Mass of water 50.003 g 24 95C Temperature of water Specific heat capacity for water 4.184J/g C Mass of metal 3.546 Temperature o
Norma-Jean [14]

Correct Question :

Mass of water = 50.003g

Temperature of water= 24.95C

Specific heat capacity for water = 4.184J/g C

Mass of metal = 63.546 g

Temperature of metal 99.95°C

Specific heat capacity for metal ?

Final temperature = 32.80°C

In an experiment to determine the specific heat of a metal student transferred a sample of the metal that was heated in boiling water into room temperature water in an insulated cup. The student recorded the temperature of the water after thermal equilibrium was reached. The data we shown in the table above. Based on the data, what is the calculated heat absorbed by the water reported with the appropriate number of significant figures?

Answer:

1642 J

Explanation:

Given:

Mass of water = 50.003g

Temperature of water= 24.95C

Specific heat capacity for water = 4.184J/g C

Mass of metal = 63.546 g

Temperature of metal 99.95°C

Specific heat capacity for metal ?

Final temperature = 32.80° C

To calculate the heat absorbed by water, Q, let's use the formula :

Q = ∆T * mass of water * specific heat

Where ∆T = 32.80°C - 24.95°C = 7.85°C

Therefore,

Q= 7.85 * 50.003 * 4.184

Q = 1642.32 J

≈ 1642 J

8 0
4 years ago
Jack has a rock.the rock has a mass of 14g and a volume of 2cm^3.what is the density of the rock?
barxatty [35]

Answer:

7

⋅

g

⋅

c

m

−

3

Explanation:

4 0
4 years ago
B. What do you notice about the density of the sinking objects? Dense objects feel very heavy for their size
puteri [66]

Answer:

The answer is below

Explanation:

The density of an object is its mass per unit of volume. Dense objects feel very heavy for their size, while for objects with low density they are very light for their size.  

Density is the ratio of mass to volume; it is given by:

Density (D) = mass (m) / volume (V)

An object sinks in water if the density of the object is greater than the density of water. While an objects floats on water if the density of the object is les than the density of water

4 0
3 years ago
Compare the distance between the molecules of a gas in a very small container with the distance between the molecules of the sam
kvv77 [185]
Gases take the shape of their container. When you have a large container, the spaces between molecules (particles) can be further apart than if they were close together. In small containers, the particles are forced to be closer together, or compressed.

Think of it like a pep rally in a gym v.s. a classroom. In the gym, everyone has a bit of wiggle room. With the same number of people in a classroom, everyone would need to be packed in there. This can also explain why a smaller pot over boils from steam before a larger one does, even if the amount of water is the same.
6 0
3 years ago
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