Answer:
B
Explanation:
The properties of a substance can be measured when matter undergoes a change.
Answer:- 0.800 moles of the gas were collected.
Solution:- Volume, temperature and pressure is given for the gas and asks to calculate the moles of the gas.
It is an ideal gas law based problem. Ideal gas law equation is used to solve this. The equation is:
PV=nRT
Since it asks to calculate the moles that is n, so let's rearrange this for n:
V = 19.4 L
T = 17 + 273 = 290 K
P = 746 mmHg
we need to convert the pressure from mmHg to atm and for this we divide by 760 since, 1 atm = 760 mmHg
P = 0.982 atm
R =
Let's plug in the values in the equation to get the moles.
n = 0.800 moles
So, 0.800 moles of the gas were collected.
Answer:
c) more particles collide with the walls of the container
Explanation:
More moles means more particles. If the volume remains the same, the collisions of more particles with the container walls cause the pressure to increase.
The answer must show the lowest number of significant number of significant places in the decimal region
Explanation:
5.67 + 0.00032 adds up to 5.67 because the least number of significant figures in the decimal place 2.
- To add up two numbers, that are in decimal places.
- Identify the number of significant figures in them
- Their addition should sum up to a value no more than the significant figures to the right of the decimal having the lowest accuracy.
5.67
+ 0.00032
to the right of the decimal, they have two significant numbers.
The answer should also be this way.
learn more:
Significant figures brainly.com/question/6443737
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