Which of the following has the greatest heat capacity?
a. 1,000 g of water
b. 1,000 g of steel
c. 1 g of water
d. 1 g of steel

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium

Which of these natural resources is non-renewable a. corn b. wind c. geothermal d. natural gas