Which of these is a mixture

1) carbon

2) carbon dioxide

3) air

4) oxygen

Structural formulas show the arrangement of blank in molecules.

The molar mass of a compound is 92 g/mol. Analysis of a sample of the compound indicates that it contains 0.606g of N and 1.390g of O. Find its molecular formula.

A black rooster mates with a white hen. Based on their genotypes, the chance that the offspring will be checkered is 100 percent. What is the rooster's genotype? What is the hen's genotype? The rooster genotype is. The hen's genotype is.

Regarding chemical elements such as argon that are inert, which of the following statements is true? A. They regularly lose several of their outer electrons when reacting. B. They have twice as many protons as electrons. C.

In the balancing chemical equations simulation on phet, were you able to use noninteger numbers (like? or 0.43) for the coefficients in a balanced equation? Why or why not?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

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