5. Carry out the following operations and express the answer with the correct number of significant

figures. (10 + 67.809) * 20 =

a: 1560

b. 1500

c. 2000

d. 1600

The mass percent of oxygen in pure glucose, c6h12o6 is 53.3 percent. a chemist analyzes a sample of glucose that contains impurities and determines that the mass percent of oxygen is 49.7 percent.

An atom is the basic building block of matter. An atom is made up of three smaller parts: the proton, neutron, and electron. Which item is the largest?

Is polythene a conductor or an insulator (eletricity)

How many moles of magnesium are needed to react with 3.0 mol of o2?

Important (question on k12 test) Which choice tells the two main ways minerals are classified? chemical makeup and crystal lattice structure how they can be used and the country they are found in chemical makeup and how they can be used how they can

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

Sodiun atom, potassium atom, and cesium atoms have the same?

A molecule is what?

How many electrons in an atom could have these sets of quantum numbers n=7 l=3 ml=-1?

The reaction A+B-> C+D rate=k[A][B]^2 has an initial rate of 0.0810 M/s. What will the initial rate be if [A] is halved and [B] is tripled? What will the initial rate be if [A] is tripled and [B] is halved?