Mass Conversion

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.HS-PS1-7

What is the mass of 0.89 mol of CaCl₂?

• 111 grams

• 0.008 grams

• 98.9 grams

• none of the choices

Tags

NGSS.HS-PS1-7

Determine the mass of 4.20 moles of C₆H₁₂

• 353 g

• 0.0499 g

• 337 g

• 2.53 x 10²⁴ g

How many moles are in 16.94g of water?

• 16.94 mol H₂O

• 0.9401 mol H₂O

• 305.3 mol H₂O

• 1.063 mol H₂O

What is the mass of 0.89 mol of CaCl₂?

• 111 grams

• 0.008 grams

• 98.9 grams

• 67.22 grams

Convert 86.235 g of diphosphorus pentaoxide to moles.

• 12240 moles

• 1.8747 moles

• .608 moles

• .60755 moles

48.86 g of cobalt is equal to how many moles of cobalt?

• 1319 moles

• 1.8 moles

• 0.829 moles

• 1.2 moles

Tags

NGSS.HS-PS1-1

How many moles are in 32 grams of Oxygen (O)?

• 3

• 2

• 1

• 4

In a chemical reaction, if 10g of reactant A reacts with 15g of reactant B to form 20g of product C, what is the mass of the remaining reactant?

• A) 5g

• B) 10g

• C) 15g

• D) 20g

Tags

NGSS.HS-PS1-7

What is the mass of 2 moles of water (H2O)?

• A) 18g

• B) 36g

• C) 54g

• D) 72g