Magnesium bromide reacts with chlorine to form magnesium chloride and bromine. Balance the equation

What is the percent composition of hydrogen in a compound if the mass of the initial compound is 276 grams and the mass of collected hydrogen after decomposition is 41.4 grams? A. 6.6% B. 10.0% C. 15.0% D. 21.2%

Why is a food web a better representation of relationships within an ecosystem than a food chain? A. A food web shows that most organisms consume and are consumed by more than one organism. B.

A car driver accelerates to a speed of 35 mph and then takes her foot off the gas pedal. Even though she does not press the brake pedal at any time, she eventually rolls to a stop. Which of the following most likely causes the car to come to a stop?

Why is cyanide lethal? What dose it do once inside the body?

It is NOT possible for a virus to infect a bacterium. T or F

A 100.0 mL sample of 1.020 M HCl is mixed with a 50.0 mL sample of 2.040 M NaOH in a Styrofoam cup. If both solutions were initially at 24.

During fusion, the hydrogen in the Sun is? a. entirely converted to energy. b. entirely converted to helium. c. partially converted to energy. d. partially converted to deuterons.

The nucleus of a radium-226 atom is unstable, which causes the nucleus to spontaneously (1) absorb electrons (3) decay (2) absorb protons (4) oxidize

What is the molality of glycerol solution with density og 1.120g/ml and mass percentage of 48%?

Inside an atom, which of these occupies the maximum volume? a) the electrons b) the protons c) the neutrons d) empty space (vacuum)