Cindy makes herself a cup of hot chocolate on a very cold day. If Cindy's hands are very cold and the cup is very hot, heat energy transfers from the cup to her hands because

2CH4 + 4O2 → CO2 + 4H2O Which statement is true regarding the chemical equation? A) The equation is balanced. B) The 4 in front of the oxygen on the product side needs to be a 6 in order to be balanced.

Which kind of reaction is shown below? 2H2O2 → 2H2O + O2

A mixture of n2 (g) and h2 (g) has mole fractions of. 40 and. 60, respectively. what is the density of the mixture at 1 bar and 0 degrees celsius?

The expected first intermediate formed during a halohydrin reaction is: a. a cyclic oxonium ion. b. the most stable carbocation with OH on the adjacent carbon. c. ahalonium ion. d. the most stable carbanion. e.

Which statement best describes the liquid state of matter? A. It has definite shape but indefinite volume. B. It has definite shape and definite volume. C. It has indefinite shape and indefinite volume. D. It has indefinite shape but definite volume.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine? a. measure the mass of the gas b. measure the speed of the gas molecules c.

A 1.268 g sample of a metal carbonate, MCO3, was treated 100.00 mL of 0.1083 M H2SO4, yielding CO2 gas and an aqueous solution of the metal sulfate. The solution was boiled to remove all of the dissolved CO2 and then was titrated with 0.1241 M NaOH.

1. According to the article, which country may have a greater population than China by the year 2050? A. China B. Kenya C. India D. Germany 2. What does the article list as one reason that drives couples in India to have more children? A.

How are the relationships of elements in a group different from the relationships of elements in a group

How many nitrate ions are in 387.4 grams of calcium nitrate?