In which of the following processes will substances move from areas of lower concentration to areas of higher concentration?

a. facilitated diffusion

b. diffusion

c. active transport

d. osmosis

Acids (H+) reacts with metal hydroxides (OH¯) to from a. Salt and hydrogen gas b. Salt and water c. Salt and hydrogen oxides d. Salt and alkali.

Which of these is an effect of weathering and erosion in the atmosphere? A Wind can weather and erode rock formations B Plant roots can weather rocks C Rocks are weathered and eroded by water, wind, living things, and ice D Water and glaciers can

Linolenic acid (C18H30O2 - M. W. = 278.42 g/mol) reacts with hydrogen gas according to the equation: C18H30O2 + 3H2 (g) → C18H36O2 What volume of hydrogen gas, as measured at P = 1.00 atm and T = 273.15 K, is required to react with 10.

When two different liquid chemical compounds at room temperature are mixed together, the beaker they are poured into is icy to the touch. What kind of reaction is this an example of? A. a fission reaction B. a combustion reaction C.

The percent yield of this reaction is consistently 92.0%. CH4 (g) + 4 S (g) → CS2 (g) + 2 H2S (g) How many grams of sulfur would be needed to obtain 72.57 g of CS2?

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.