At STP, which 4.0-gram zinc sample will react fastest with dilute hydrochloric acid?

(1) lump (3) powdered (2) bar (4) sheet metal

What is an ion? A. An atom that has lost or gained 1 or more electrons O B. An atom that has lost or gained 1 or more neutrons O C. An atom that has lost or gained 1 or more protons D.

Carbon dioxide is commonly found as a solid (dry ice) or a gas (carbon dioxide gas). Jeff's teacher asked him to draw models to show the motion of carbon dioxide molecules that make dry ice different from carbon dioxide gas.

Water is a good solvent when A) the solute is hydrophobic. B) the solute is nonpolar. C) the solute is polar. D) the solvent is oil.

D a distinct pattern in the elements and proposed the law of octaves. What were his conclusions?

It costs ₹ 2200 to paint the inner curved surface of a vessel 10cm deep. It rhe cost of painting is at the rate of ₹20 per m2, find the first radius of the base second inner curved surface area of the vessel and third capacity of the vessel.

Chemical reactions that release energy possess reactants with lower energy than their products. True or False Heat is the most common form of energy absorbed or released in chemical reactions. True or False

What is the reason for the low solubility of LiF (0.27 g per100 ml H2O) compared to CsF (367 g per 100 ml H2O) ?

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? A.) increasing temperature B.) increasing pressure C.) decreasing surface area D.) decreasing temperature

In June there are fewer hours of daylight and less direct sunlight in the

What are two type of minerals?