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jonny [76]
3 years ago
14

There are two open cans of soda on the table.one can was just taken from the refrigerator and the other was taken from the cupbo

ard.upon opening the cans,which one loses carbon dioxide more quickly and why
Chemistry
1 answer:
larisa [96]3 years ago
3 0
The one in the cupbard looses its CO2 first as its warmer so its solution has a lower solibility to the CO2 gas 

at lower temperatures the CO2 has less energy to escape from the solution of soda as CO2 in a solution is unstable it wants to be released 

hope that helps <span />
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The average kinetic energy of water at 25oC is
svetlana [45]

Answer: The average kinetic energy of water at 25^{o}C is 1.233 \times 10^{-26} J.

Explanation:

Given: Temperature = 25^{o}C = (25 + 273) K = 298 K

Kinetic energy is the energy acquired by the molecules of a substance due to its motion.

Formula to calculate average kinetic energy is as follows.

K.E = \frac{3}{2}kT

where,

T = temperature

k = Boltzmann constant = 1.38 \times 10^{-23} J/K

Substitute the value into above formula as follows.

K.E = \frac{3}{2}kT\\= \frac{3}{2} \times 1.38 \times 10^{-23} J/K \times 298 K \\= 1.233 \times 10^{-26} J

Thus, we can conclude that the average kinetic energy of water at 25^{o}C is 1.233 \times 10^{-26} J.

7 0
3 years ago
A sample of neon gas occupies 4.5 L of gas at 1.63 atm. What will be the volume if the pressure changes to 2.4 atm
Alenkasestr [34]

Answer:

\boxed {\boxed {\sf 3.1 \ liters}}

Explanation:

This question asks us to find the new volume if the pressure changes. Therefore, we use Boyle's Law, which states that pressure and the volume of the gas are inversely proportional. The formula is:

P_1V_1=P_2V_2

We know that the original sample of gas occupies 4.5 liters at a pressure of 1.63 atmospheres.  We know that the pressure was changed to 2.4 atmospheres, but we don't know the volume. Substitute all known values into the formula.

4.5 \ L * 1.63 \ atm= 2.4 \ atm * V_2

Since we are solving for the new volume (V₂), we need to isolate the variable. It is being multiplied by 2.4 atmospheres and the inverse of multiplication is division. Divide both sides by 2.4 atm.

\frac {4.5 \ L * 1.63 \ atm}{2.4 \ atm}= \frac{2.4 \ atm * V_2}{2.4 \ atm}

\frac {4.5 \ L * 1.63 \ atm}{2.4 \ atm}= V_2

The units of atmospheres (atm) cancel.

\frac {4.5 \ L * 1.63 }{2.4 }=V_2

\frac {7.335 \ L}{2.4 }=V_2

3.05625 \ L= V_2

The smallest number of significant figures in the original measurements is 2, so our answer must have the same. For the number we found, that is the tenths place.

The 5 in the hundredth place tells us to round the 0 up to a 1.

3.1 \ L = V_2

The volume of the neon gas when the pressure is changed to 2.4 atmospheres is <u>3.1 Liters.</u>

3 0
3 years ago
Read 2 more answers
1. What number on the periodic table determines the number of electrons lost or gained?
vekshin1

Answer:

1. atomic #

2.The sugar-water is a homogeneous mixture

Explanation:

1.  However, if it has positive ion, then this electron number will go down (ie +2 charge means two electrons have been lost, so the electron/atomic number will go down by two) and vice versa.

2.Sugar dissolves and is spread throughout the glass of water. The sand sinks to the bottom. The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. Both are mixtures, but only the sugar-water can also be called a solution.

8 0
3 years ago
How many moles of CO2 would be present in a gas sample of 10 L at 25.0oC and a pressure of .77 atm?
Step2247 [10]
Use PV=nRT to solve the equation. You need to solve for n (number of moles). Don’t forget to convert the temperature to kelvins by adding 25+273. Use 0.082057 for R.
4 0
3 years ago
When the pH decreases from 6 to 3, the hydrogen ion, H+, increases by what?
Irina-Kira [14]

pH decreases as the hydrogen ion concentration increases.

<u>Explanation:</u>

When there is a decrease in pH, that is pH decreases from 6 to 3 then the acidity increases.

That is the pH is between 1 to 7 then it is acidic

When the pH is 7 then it is neutral

When the pH is between  7 to 14 then it is basic

As the H⁺ ion concentration increases, then the pH value decreases, here pH decreases from 6 to 3.

So the concentration of Hydrogen ion increases, pH decreases.

3 0
3 years ago
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