Perform the following calculations. Express the answers with the correct number of significant figures.

a) 7 g - 3.5 g - 2.75 g =

b) 200.00 kg - 199.0 kg =

c) 25 L - 3.0 L =

d) 0.67 cm + 2.0 cm + 0.090 cm =

e) 104.5 g + 0.40 g =

An atom of 135I has a mass of 134.910023 amu. Calculate the binding energy in MeV per atom. Enter your answer with 4 significant figures and no units. Use the masses: mass of 1H atom = 1.007825 amu mass of a neutron = 1.008665 amu 1 amu = 931.5 Me

The two products that are formed when a solution of HNO3 and a solution of NaOH react are water and

Which solution of sugar in water has the highest molarity?

An unbalanced chemical equation for the reaction of boron fluoride with lithium sulfite is shown below. BF3 + LI SO3 → B2 (SO3) 3 + LIF What is the coefficient of lithium fluoride in the balanced chemical reaction? 1

Find the number of atoms of arsenic in 28.62 moles of arsenic

You place air in a sealed can at stp. ypu triple its absolute temperture (K) while leaveing the volume constant. what happenes to the pressure

A current of 10.4 a is applied to 1.25 l of a solution of 0.552 m hbr converting some of the h + to h2 (g), which bubbles out of solution.

What is a greenhouse gas?

Which statement best describes a mole?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.