A new substance is formed when the?

To the nearest gram, what is the mass of one spoonful of sugar?

Indicate whether the following are acidic, basic, or neutral solution A. [H2O+]=6.0x10^-12 B. [H3O+]=1.4x10^-9 C. [OH-]=5.0x10^-12 D. {OH-]=3.5x10^-10

How many bromine atoms are present in 39.4 g of CH2Br2

J. J. Thomson's experiments supported the existence of a particle that deflected away from a negative charge and toward a positive charge.

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

What is the best way to transform a chemical potential energy into internal kinetic energy?

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl) ? * LiOH + KCl - LiCl + KOH A) 64.5% B) 88.6% C) 81.5% D) 92.8%

You aren't sure if your pH meter needs to be calibrated, so you put it in a buffer solution that has a known pH of 7. You take four separate readings of the solution with the pH meter. The meter reports the pH as 5.5, 8.6, 6.3, and 9.4.

Can you explain and read this equation 2Mg + 02 - - 2MgO

The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen.