<u>Answer:</u> The mass percent of water in the hydrated sample is 21.5 %
<u>Explanation:</u>
To calculate the mass percentage of water in the hydrated sample, we use the equation:
We are given:
Mass of hydrated sample = 2.00 g
Mass of water = [2.000 - 1.570]g = 0.430 g
Putting values in above equation, we get:
Hence, the mass percent of water in the hydrated sample is 21.5 %
Answer:
11.54 M
Explanation:
In this case, all we have to do is to apply the following expression:
M = n/V
M: molarity
n: moles
V: volume of solution in liters
In this case, we can assume that the volume of water will be the volume of solution. This is because the problem is not specifing if the moles of AgNO3 are liquid or solid, so we can make a safe assumption of the volume.
Using the expression above we have:
M = 5.54 / 0.48
M = 11.54 M
This is the molarity of solution
Answer:
True
Explanation:
Because Nitric acid is formed by the gas-phase hydrolysis of N2O5. The energy profile curve for the reaction N2O5 H2O → 2HNO3 is shown here. The reaction is endothermic and the activation energy of the reverse reaction is larger than for the forward reaction.
Answer:
The number of molecules = 2.6408 molecules
Explanation:
To determine the number of molecules in water, we need to determine how many moles of water we have
Water has a molar mass of 18.015g/mol, this means that one mole of water molecules has a mass of 18.015g
To find the number of molecules,
7.9g * 1 mole H2O/ 18.015g
= 0.4385mole of H2O
Using avogadro number,
0.4385 H2O * 6.022* 10^23molecules/ 1 mole of H2O
That's 0.4385 H2O multipled by 6.022*10^ 23 molecules divided by 1 mole of H2O
Which gives == 2.6408 molecules
The balanced chemical equation is →
What is a balanced chemical equation?
A balanced chemical reaction is an equation that has equal numbers of each type of atom on both sides of the arrow.
A chemical equation needs to be balanced so as to make the number of the atoms of the reactants equal to the number of the atoms of the products.
The balanced chemical equation is →
Learn more about the balanced chemical equation here:
brainly.com/question/15052184
#SPJ1