Why does analyzing character motivation matter?

For the chemical reaction Na 2 CO 3 + Ca (NO 3) 2 ⟶ CaCO 3 + 2 NaNO 3 how many moles of calcium carbonate will be produced from 91.9 g of sodium carbonate? moles of calcium carbonate:

Which tool is most suitable for a chemist to measure the mass of liquid? A. Electronic device B. Graduated cylinder C. Measuring cup D. Meter stick

Use the information in the square to answer the questions about copper. how many protons are in an atom of copper? how many electrons are in an atom of copper? how many neutrons are in an atom of copper? round your answer to the nearest whole number.

Shoe companies imbed unique designs on the bottoms of the sneakers they manufacture. What is the main purpose of the designs on the bottoms of sneakers? A. to increase potential energy B. to decrease friction C. to increase friction D.

What do scientists arrange data in

If element X consists of 64.6% of atoms with a mass of 34.0 u, 18.2% of atoms with a mass of 35.0 u, and 17.2% of atoms with a mass of 36.0 u, what is the average atomic mass of element X to the nearest hundredth?

Water has a K, value of 1x 10-13 1x 10-10 1x 10-15 1x 10-14

What evidence do scientists use to explain how the solar system formed? A) All the planets were a result of solar flares from the sun. B) All the planets are made of the same material, mainly helium.

Ta, Os, Th are from metal?

The formula for Na2 O