An atom has 10 protons, ten neurons and ten electrons. What is the mass of that atom in u unit?

Keeping in mind the rules for significant dig - its, calculate the sum of 4.702 g and 0.6122 g

How can you describe the location of vanadium (v, atomic number 23) on the periodic table? Choose all that apply. period 5, group 4 period 4, group 5 nonmetals transition metals

In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2. Calculate the amount of force at which the car strikes the barrier. The car strikes the barrier with a force of N.

The periodic law states that the physical and chemical properties tend to repeat periodically when elements are arranged according to what trend

How might non renewable resources be used to collect renewable resources?

A banana split contains 1.12 million calories. What is the energy value in kilojoules? a. 1.12 kJ b. 4.686 x 10^3 kJ c. 4686 kJ d. 2.68 x 10^5 kJ e. 268 kJ

2 grams of a substance was dissolved in 75.0 g of water resulting in a temperature decrease from 23.1 ⁰C to 18.7 ⁰C. The specific heat of the solution is 4.18 J/g·⁰C. Calculate the amount of heat associated with the water.

Why do you think the soccer ball fell more slowly than the golf ball

Which of the following is an example of chemistry research in the main area of energy?. a. producing bioplastics. b. specific reactions between prescription drugs and chemicals in cells. c. developing rechargeable batteries. d.

A gas is sealed in a bottle at 25°C and 1.50 atm pressure. How must the storage conditions be changed to bring the gas to Standard Temperature and Pressure (STP) ? A. Increase the temperature by 25°C and decrease the pressure by 0.514 atm. B.