How many significant figures are contained in each of the following measurements?

(a) 38.7 g

(b) 2 x 1018 m

(c) 3,486,002 kg

(d) 9.74150 x 10-4 J

(e) 0.0613 cm3

(f) 17.0 kg

(g) 0.01400 g/mL

What is the difference between atomic mass and number?

Which statement is correct about honey? It contains disaccharides, a complex type of lipid. It contains monosaccharides, the simplest carbohydrate. It contains starch, which gives it a sweet taste. It contains lipids, which give it a sweet taste.

A sample of carbon-12 has a mass of 6.00g. how many atoms of carbon-12 are in the sample?

Describe the interactions between water molecules and sodium and chloride ions

A 98.0°C piece of cadmium (c=.850J/g°C) is placed in 150.0g of 37.0°C water. After sitting for a few minutes, both have a temperature of 38.6°C. What was the mass of the cadmium sample?

The atomic weight of hydrogen is 1.00794. a. True b. False

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?

Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin

Which fossil fuel is the most widely consumed in the United States? A. petroleum B. natural gas C. peat D. coal