assume melecular mass is 100 g

assume melecular mass is 100 g

How many moles would 7.84 x 10^25 atoms of magnesium be? – Show Work

What is the mass of 1.2 x 10^-3 moles of sodium chloride? – Show Work

there is 6.10g of Cobalt (II) Nitrate, Co(NO3)2, what is the molar mass?

How many moles in 34.2 g of sulfur? – Show Work

How many moles in 31.0 g of chlorine? (Remember chlorine is diatomic) – Show Work

How many grams in 45.22 moles of strontium? – Show Work

How many grams in 3.91 moles of sodium? – Show Work

What mass would 4.06 moles of water have? – Show Work

How many grams of sulfate ions would be in 2.5 moles of sulfate? (Remember sulfate is a polyatomic ion). – Show Work

starting with n=g/MM and PV=nRT, detrive the formula for molar mass

A company is studying the use of a compound as a potential antifreeze. When 0.243 g of the compound is dissolved in 25.0 g of water, the freezing point of the solution is -0.201 * Celsius. a...

A 0.548 gram sample of a metal, M, reacts completely with sulfuric acid according to: M(s)+H2SO4(aq) -> MSO4(aq)+H2(g) A volume of 253 mL of hydrogen is collected over...

The molar mass of aspirin is 180.16 g/mol. What is the theoretical yield in grams, for the aspirin she theoretically obtained above using 4.02 g of SA? What is the percent yield?

a 1.00 L sample of gas has a mass of 1.92g at STP. What is the molar mass of the gas?

Find the molar mass of PCl3?

The molar mass of salicylic acid (SA) is 138.12 g/mol. How many theoretical mols are there in the 4.02 g of the SA reactant the student started the reaction with?

Assume that 18.4 g of Al react with HCl according to the equation Al(s) + HCl(aq) −→ AlCl3(aq) + H2(g) at STP. How many moles of Al react? Remember to balance the equation first. Answer in...

1.) Elemental phosphorus reacts with chlorine gas according to the equation: P4(s)+6Cl2(g)→4PCl3(l) A reaction mixture initially contains 45.09g P4 and 131.1g Cl2. Once...

Calculate each of the following (a) moles of compound in 0.510 g ammonium bromide _____ mol (b) number of potassium ions in 59.8 g potassium nitrate _____ ions (c)...