How many calories are required to raise the temperature of 75.0 g of water from 20 derees c to 50 degrees c? a. 3750 cal b. 1.50 × 103 cal c. 75.0 cal d. 2250 cal

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!