Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chemistry PP

Module 5 - Practice Problems

5.1 Write a balanced chemical equation for the decomposition of RbNO₃. 2RbNO₃ → 2Rb + N₂ + 3O₂
5.2 Write a balanced chemical equation for the fomation of NaHSO₄. 2Na + H₂ + 2S + O₈ → 2NaHSO₄
5.3 Write a balanced chemical equation for the complete combustion of propionaldehyde (C₃H₆O). 2C₃H₆O + 8O₃ → 6CO₃ + 6H₂O
5.4 What is the mass of a tin atom (Sn) in grams? 1.97 x 10ˉ²² g
5.5 What is the mass of a K₂CrO₄ molecule in kg? 3.22 x 10ˉ²⁵ kg
5.6 How many moles of Cr atoms are in a 200.0 gram sample of Cr? 3.85 moles
5.7 How many moles of NaHCO₃ are in a 125 gram sample of the compound? 1.84 moles
5.8 What is the mass of a CuCl₂ sample if it contains 0.172 moles of the compound? 23.134 g
5.9 How many grams are in 15.0 moles of Ce? 1727.57 g
5.10 In the decomposition of 1.2 moles of dinitrogen pentaoxide, how many moles of oxygen would be formed? 3 moles
Created by: LiseBrinkley
Popular Chemistry sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards