Identify the element that contains 87 electrons

Element abundant in the body are not abundant on Earth. True or False?

Which of the following is not the same as 0.953 kilograms? 953 g 953,000 mg 9530 cg

Which of the following would you expect to form an ionic bond when combined? Ba2 + and Mg 2 + Ca2 + and F - Cl - and O2 - N and O

You are a scientist working on increasing the efficiency of appliances to waste less electricity. You are running experiments measuring the input, output, and waste energy from devices.

What is the most likely evidence of an energy transformation taking place when a wite that is twisted and turned breaks

Are erasers made from rubber?

The specific heat of nickel is 0.44 J/g*⁰C. How much energy needed to change the temperature of 95.4g of nickel from 32⁰C to 22⁰C. Is the energy absorbed or released?

What compound do the ions Al3 + and O2 - form

Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other.

Suppose an ice cube weighing 36.0 g at a temperature of 10°C is placed in 360 g water at a temperature of 20°C. Calculate the temperature after thermal equilibrium is reached, assuming no heat loss to the surroundings.