Which of these pure elements would be dangerous to hold in the palm of your hand?

a. sodium

b. zinc

c. sulfur

d. gallium

What is the moon made of

Hydrocarbons are organic compounds composed entirely of hydrogen and carbon. A 0.1647 g sample of a pure hydrocarbon was burned in a combustion apparatus to produce 0.4931 g of CO2 and 0.2691 g of water.

When 10 grams of copper and 10 grams of iodine are mixed, what is the theoretical yield of copper I iodide? 2Cu + I2 → 2CuI

The Old Man in the Mountain was a natural rock formation in a cliff in the White Mountain in New Hampshire that became a symbol for the state. On May 3, 2003, the symbol came crashing down.

Why did Becquerel expose uranium crystals to sunlight in his initial experiment? He wanted to show that warmed crystals radiate heat. He wanted to show that the crystals emit X-rays.

HNO3 + H2O > H3O (aq) + NO3 - (aq)

What do you get when you mix lemons with gunpowder

What is the mass of 9.92*10^24 molecules of methanol?

How many moles of h2so4 are required to react with 6.80 miles of al2o3

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.