Sem 2 Chem Quiz 4

B₂H₆ + 3O₂ -->2 HBO₂ + 2 H₂O
 What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

• 13.8 g O₂
• 3.86 mol of O₂
• 124 g O₂

2CO  +  O₂  −-> 2CO₂
How many liters of carbon dioxide are produced from 10L of carbon monoxide?

• 10
• 20
• 1
• 5

Tags

NGSS.HS-PS1-7

KBr

• Soluble
• Insoluble

Tags

NGSS.HS-PS1-1

Zinc Hydroxide

• Soluble 
• Insoluble

Tags

NGSS.HS-ESS2-5

If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be

• 250 mL
• 204 mL
• 196 mL
• 160 mL

A gas has a pressure of 1.50 atm at a temperature of 273 K.  What will be the pressure at 410 K?

• .99 atm
• 2.25 atm
• .75 atm
• 2.5 atm

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

Tags

NGSS.HS-PS1-5

When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated
• unsaturated
• saturated

Tags

NGSS.HS-PS1-5

What is the symbol for  Energy?

• Q
• t
• m
• C

What unit do you use to measure Energy?

• J/Kg ºC
• Kg
• ºC
• J or cal