Which of the following forces can make a ball move?

A - A balanced force

B - An unbalanced force

C - Equal and opposite forces along a horizontal plane

D - Equal and opposite forces along a vertical plane

What are the concentrations of hydrogen ion and hydroxide ion in household ammonia, an aqueous solution of nh3 that has a ph of 11.50?

4.65 L of nitrogen at standard pressure is compressed into a 0.480 L container. What is the new pressure in kPa?

What happens to the half-life and mass of reactants broken down during a nuclear decay reaction? The half-life of the reactants in a nuclear decay reaction remains constant over time, and the mass of the reactants that are consumed stays the same.

How many feet are contained in. 399 km

True or False? A change in color is evidence of a chemical reaction

A student needed exactly 45.3ml of a solution. what piece of glassware should that student use? justify your choice.

NaCl + H2O → NaOH + Cl2 + H2 How many grams of chlorine gas, Cl2 are given off if 7.5 grams of sodium chloride, NaCl, are decomposed? Is this equation balanced?

What is the net ionic equation for the precipitation reaction between bacl2 and na2so4? a bacl2 (aq + na2so4 (aq? baso4 (s + 2nacl (aq b ba2 + (aq + so42 - (aq? baso4 (s c na + (aq + cl - (aq?

2. A compound with the following composition by mass: 24.0% C, 7.0% H, 38.0% F, and 31.0% P. what is the empirical formula

Why does the burning of magnesium ribbon start the reaction between iron oxide and aluminium when making iron?