What is a system?

O

A. A piece of scientific equipment

B. A technique for recording data

c. Aliquid in which reactions take place

D. An isolated piece of the world

Is energy used during an explosion

What is diffusion in the carbon cycle?

How many molecules (not moles) of n h 3 are produced from 6.04*10-4 g of h 2?

Suppose you will fill a glass with ice cubes. When the ice cubes melt, is the glass still full

During a combustion reaction, 12.2 grams of methane reacts with 14 g of oxygen. The reaction produces carbon dioxide and water. If 20 grams of water are produced, how many grams of carbon dioxide are produced?

How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0

How many liters of 0.85 M HCl solution would react completely with 3.5 moles Ca (OH) 2?

The specific heat of aluminum is 0.897 J/g•°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of aluminum from 7°C to 29°C? A. Q = 0.75 g x 0.897 J/g•°C x 22°C B. Q = 0.75 g x 0.

Carbon dating advisable for measuring materials ages for a few years, thousands of years, millions of years

What is the pH of a solution with [H+] = 7.0 x 10^-2?