Which element would not have similar properties with Calcium?

a

K, Potassium

b

Sr, Strontium

c

Mg, Magnesium

d

Be, Beryllium

In this assignment, you will write and balance a chemical equation. Then, you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.

Which theme of biology explains the modification of an organism's parts to adapt to its habitat?

The concentration of hydrogen ions in a soil sample is 1.3 x 10-6 M. When the soil is tested with a pH meter, what value should the meter read? a 6.2 b 5.9 c 1.3 d 1.9

What happens when nitrogen fills its valence shell? a) three electrons are lost, making N+3 b) three electrons are lost, making N-3 c) three electrons are gained, making N-3 d) three electrons are gained, making N+3

Which formula can be used to express the law of conservation of momentum, where p = momentum?

How many bonds are present in HCI? a) 1 b) 3 c) 4 d) 2

Determine the number of moles 1) 20g Na and 2) 34g H2O

Nitrogen dioxide (NO2) gas and liquid water (H2O) react to form aqueous nitric acid (HNO3) and nitrogen monoxide (NO) gas. Suppose you have 5.0 mol of NO2 and 11.0 mol of H2O in a reactor. Suppose as much as possible of the NO2 reacts.

How long does it take the Earth to rotation and revive

What is Charles' law formula?