Answer:
D
Explanation:
The proberties of the substances that are produced are different from the properties of the original substances.
Answer:
The correct answer is option B. From 200K to 400K
Explanation:
Hello!
Let's solve this!
The ideal gas equation is the following PV = nRT
Where the variables are:
P: pressure
T: temperature
V: volume
R: universal constant of ideal gases
n: number of moles
We see in the equation the proportional relationship of volume with temperature.
We deduce that if the volume increases twice, then the temperature increases twice.
The temperature has to be in Kelvin, that's why we chose that answer.
Of the options, the correct answer is option B. From 200K to 400K
Answer:
Volume, V = 3.35 mL
Explanation:
Given that,
The density of chloroform is 1.49 g/mL
We need to find the volume of 5.0 g of chloroform. Let V is its volume.
Density is equal to mass per unit volume.
So, the volume of 5 g of chloroform is 3.35 mL.
Answer: the answer is C oxidizing
<h3><u>Answer;</u></h3>
B: The volume of hydrogen produced would be the same.
<h3><u>Explanation;</u></h3>
Ca(s) + 2 H2O(l) → Ca(OH)2(aq) + H2 (g)
- From the reaction;<u><em> the mole ratio of calcium to water is 1 : 2; which means 1 mole of calcium requires 2 moles of water to produce 1 mole of hydrogen gas. </em></u>
- Therefore; <em><u>changing the mass of water used will not affect the amount of hydrogen gas produced since the amount of hydrogen gas produced depends on the amount of calcium used. In this case, water is in excess, because 0.1 moles of calcium requires only 0.2 moles of water which is 3.6 g.</u></em>
- Hence; <em>since the amount of calcium remains the same the amount of hydrogen gas produced will remain the same.</em>
