Write out the rule for determining total magnification of a compound microscope

What two things must you specify when describing the velocity of an object

Usually, when the temperature is increased, what will happen to the rate of dissolving?

Which of the following spectra will be produced from light of a distant star viewed from the Hubble Space Telescope?

What is the atomic mass of an element expressed in grams called?

Calculate the initial molarity of MCHM in the river, assuming that the first part of the river is 7.60 feet deep, 100.0 yards wide, and 100.0 yards long. 1 gallon = 3.785 L.

Which statement is true about molecules and compounds? Question 7 options: Both are made of two or more elements. Both are made of only one element. Both are made of only one kind of atom. Both are made of two or more atoms.

Which reaction is endothermic? H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal ½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g) ½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

If a temperature increase from 10.0 ∘C to 21.0 ∘C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction

Chlorine released from chlorofluorocarbons (cfcs) reacts with ozone in the atmosphere to form oxygen. the proposed reactions are cl (g) + o3 (g) →clo (g) + o2 (g) clo (g) + o (g) →cl (g) + o2 (g) identify the species that acts as a catalyst and the

What does one of the elements in the periodic table have?