Why is it important to be close to the microphone during a recording?

Mole Conversions and Chemical Calculations

Interactive Video
•
Chemistry, Science, Mathematics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To keep the camera focused
To avoid background noise
To make sure the sound is clear
To ensure the video quality is high
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving a two-step problem involving grams and moles?
Find the molar mass
Use Avogadro's number
Convert moles to grams
Convert grams to moles
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a two-step problem, what is the mole ratio used for converting hydrogen to aluminum?
2 moles of hydrogen to 3 moles of aluminum
3 moles of aluminum to 2 moles of hydrogen
3 moles of hydrogen to 2 moles of aluminum
1 mole of hydrogen to 1 mole of aluminum
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What additional step is involved in a three-step problem compared to a two-step problem?
Converting moles to molecules
Finding the molar mass
Using Avogadro's number
Converting moles to grams
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of sodium hydroxide (NaOH) used in the calculations?
40 grams per mole
23 grams per mole
16 grams per mole
58 grams per mole
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many sodium atoms are there for every two sodium aluminates in the problem?
Three
Four
Two
Six
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What number is used to convert moles to molecules in the three-step problem?
6.02 x 10^23
22.4
40
58.5
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