A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class, how many test tubes are required for three chemistry classes?

Sulfur reacts with fluorine to produce three different compounds. The mass ratio of fluorine to sulfur for each compound is given in the following table: Compound mass F : mass S S2F10 2.962 SF4 2.370 SF6 3.

The chemical formula for the compound strontium sulfide, which contains Sr2 + and S2 - ions, is

The specific heat of silver is 0.234 j / (g·c). calculate the amount of energy that is needed to raise the temperature of 175 g of silver from 22.5°c to 40.0°c.

Owls from the barn. which of these sentence parts is missing from the fragment

Describe Thomson's Cathode Ray experiment and Rutherford's Gold Experiment, including the observed results that caused the scientific community to accept changes to Dalton's original model of the atom.

Convert 3.57 moles of aluminum to grams

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Why scientist form a hypothesis

Step two of the procedure states: "Using sterile technique, place a loopful of inoculum from the M. luteus culture in the drop of nigrosin and mix." Which of the procedures qualifies as sterile technique?

If 4.34 moles of potassium react with excess water, how many moles of hydrogen gas would be produced at STP