Answer:
Hey, use this formula
Explanation:
1 mole of carbon has 6.022 × 1023 carbon atoms so what about 79.7 moles?
cross multiply and thats the answer
87.62g = molar mass of strontium
1 moles of strontium
175.24g x
--------------------------------
87.62 g of strontium
== 2 miles of strontium
I use the conversion 1 mol/87.62 g to convert the mass of an element to its molar form. I know that 87.62 grams equals one mol of strontium, but how about 175.24 grams of strontium? 2 mols of strontium equal 175.24 grams of strontium
Answer:
200.87 g
Explanation:
In order to calculate the mass of ice that could be melted by using 67,000 J of energy, we will use the following expression.
Q = ΔH°f × m
where,
- Q: heat required (67,000 J)
- ΔH°f: enthalpy of fusion of water (333.55 J/g)
67,000 J of energy can be used to melt 200.87 grams of ice.