In this group, which percentage does the green seed

represent?

25%

50%

75%

100%

Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2 C4H10 (g) + 13 O2 (g) → 8 CO2 (g) + 10 H2O (l) At 1.

26 Which process occurs in an operating voltaic cell? (1) Electrical energy is converted to chemical energy. (2) Chemical energy is converted to electrical energy. (3) Oxidation takes place at the cathode. (4) Reduction takes place at the anode.

In a Lewis dot diagram, the electrons shown * a) Are in the innermost energy level b) Always equal the number of protons c) Are in the outermost energy level d) Always add up to an even number

One way to separate a mixture of sugar and water is through crystallization. True False

Consider this reaction: 2Cl2O5 (g) - ->2Cl2 (g) + 5O2 (g) At a certain temperature it obeys this rate law. rate = (17.4 M - 1. s - 1) [Cl2O5]2 Suppose a vessel contains Cl2O5 at a concentration of 1.46M.

Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium? a. 1,620 years b. 3,240 years c. 4,860 years d. 6,480 years

Which the following atoms will not react with water? a. K b. Li c. Pb d. Na

Fluorin is often added to drinking water and toothpaste

What larger energy does light energy come from?

Allows water to pass through easily