Which of the following is an example of convection?

a hot object transferring heat to a cooler one

hot air rising and cooler air falling

the rays of the Sun warming the earth

a hot oven warming the air around it

How should this combustion reaction be balanced? C5Hg + O2 → CO2 + H2O

The graph of a linear equation may not be a straight line? true or false

If a sample of 0.150 g of kcn is treated with an excess of hcl, calculate the amount of hcn formed in grams.

Why does a solution mix itself?

23 How many moles are in 500g of Calcium Nitrate? 10 M

Which of these would be an appropriate way to describe the concentration of orange candies? Check all that apply the number of orange candies divided by total number of candies the mass of orange candies divided by total mass of candies the volume

A 8.00 L tank at 26.9 C is filled with 5.53 g of dinitrogen difluoride gas and 17.3 g of sulfur hexafluoride gas. You can assume both gases behave as ideal gases under these conditions.

What type of wave is sound? a. gamma b. pressure c. electromagnetic d. light

4. State the difference between mass and weight.

Jayla has two wires that are both made of pure copper. One of the wires is bigger than the other wire. Which of the following is true about the particles of the wires? A. The large copper wire will have smaller particles than the small copper wire.