What does the word estimate mean

What pressure is required to compress 189.0 liters of air at 1.00 atm into a cylinder whose volume is 28.0 liters

White wines tend to be more acidic than red wines. Find the [H3O ] in a Sauvignon Blanc with a pH of 3.23 and a Cabernet Sauvignon with a pH of 3.64. How many times more acidic is the Sauvignon Blanc

The volume of a pond being studied for the effects of acid rain is 35 kiloliters (kL). There are 1,000 liters (L) in 1 kL and 1 * 10^6 microliters (mL) in 1 L. What is the volume of this pond in microliters?

An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?

If 980kJ of energy as heat are transferred to 6.2L of water at 291 K what will the final temperature be? The specific heat of water is 4.18 J/g•K. Assume that 1.0 mL of water equals 1.0 g of water.

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.

The mass of 1 mol of chromium (atomic mass 51.996 amu) is

Which of the following elements will tend to form a cation? A. Oxygen B. Nitrogen C. Sulfur D. Lead E. All of the Above

Is pure orange juice a solution or a suspension