Earthquake foci (Focus, singular) are ...

1) More than 200 miles

2) 0-50 miles deep

3) Deep 50-200 miles deeo

4) All the above

A 20g piece of lead absorbs 566 joules of heat and its temperature changes from 35 oC to 195 oC. Calculate the specific heat. 40g of water is heat at 40 oC and the temperature rise to 75 oC.

How does the energy released in a nuclear reaction get created? A. By an endothermic reaction occurring B. By the mass of the nucleus getting smaller C. By bonds being created between two atoms D. By water turning into hydrogen and oxygen

carbohydrates which contain carbon, hydrogen, and oxygen can provide energy, structure, and hormones. True or False

Which of the following can be measured in amps with an ammeter

What is the ratio of effusion for F 2 aas to Cl 2 aas?

Consider the reaction BF3 + NH3 → F3B-NH3 What changes in hybridization (if any) of the B atom are a result of this reaction? A. Before the reaction boron is sp2 hybridized, and after the reaction it is sp3d hybridized. B.

In the reaction CaCO3 → CaO + CO2 100 grams of calcium carbonate (CaCO3) is observed to decompose upon heating into 56 grams of calcium oxide (CaO) and 44 grams of carbon dioxide (CO2). This is an illustration of

The sample contains 1.02 mol S. To calculate the mole ratios of the elements, you will divide each molar amount by 1.02 mol. Calculate the mole ratios of the elements in the compound. Round each ratio to the nearest whole number.

This photo shows a plateau in eastern canada. which events could have caused this plateau to form? select the three correct answers

Consider the following reaction: CaCO3 (s) →CaO (s) + CO2 (g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) 300K 1000K 1440K