1. How many moles of carbon dioxide, CO2, contains 8.25x10^23 molecules of carbo
ID: 560495 • Letter: 1
Question
1. How many moles of carbon dioxide, CO2, contains 8.25x10^23 molecules of carbon dioxide? The molar mass of carbon dioxide is 44.0095 grams per mole. Make sure to include the correct unit symbol with the answer choice.
2. What is the mass, in grams, of 1.372 moles of lithium. Make sure to include the correct unit symbol with the answer choice.
3. At STP, how many moles of helium gas would occupy 8.00 liters? Make sure to include the correct unit symbol with the answer choice.
4. A gas sample in a closed expandable container of initial volume is 9.34 liters was allowed to warm from 21 Celsius to 38 Celsius, at constant moles and pressure. What was its new volume. Please report the answer choice with two decimal place values and include the correct unit symbol
5. The metal used in the manufacture of tableware, mirrors, jewelry, and dental alloys. If the design for a piece of jewelry requires 0.364 mole of tin, how many grams of tin are needed?
Explanation / Answer
1)
moles of CO2 = number of molecules / Avogadro’s number
= (8.25*10^23)/(6.022*10^23)
= 1.37 mol
Answer: 1.37 mol
2)
Molar mass of Li = 6.968 g/mol
we have below equation to be used:
mass of Li,
m = number of mol * molar mass
= 1.372 mol * 6.968 g/mol
= 9.56 g
Answer: 9.56 g
Only 1 question at a time please
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.