1.

Earth's diameter is 12.756 kilometers. How many meters is this?

2.

The diameter of Earth's moon is 3.476 kilometers. Express this distance in centimeters.

ES How many milliliters of water should be added to 50.0 mL of a 1.0 M CaBr2 solution to create a 0.25 M solution?

Consider that you collect hydrogen gas over water in an upside-down test tube. If the atmospheric pressure is 1.00, which of the following statements are true? Select all that apply. A.

A pure substance made of one kind of atom

If a total distance of 750 m is covered in a time interval of 25 s, the average speed is? 3, 974 mph 3 mph 30 mph 30 m/s

Pure oxygen gas was first prepared by heating mercury (ii) oxide, hgo: 2hgo (s) →2hg (l) + o2 (g) what volume (in l) of oxygen at stp is released by heating 10.36 g of hgo?

True or false: for genetic engineering the specific traits of a given organism are located on the DNA sequence of the chromosomes are genes

A container with a volume of 3.46 liters contains a gas at a pressure of 1.30 atmospheres and a temperature of 274.27 Kelvins. How many moles of gas are in the container?

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12