Pure water has a ph of 10 at 298 K. True or false

Two types of global food chains and how to they connect'

Which of the following will change the momentum of a moving object? Select all that apply. a change in mass a change in volume a change in velocity a change in acceleration

For the reaction 2ch4 (g) ⇌c2h2 (g) + 3h2 (g) k = 0.135 at 1608 ∘c. what is kp for the reaction at this temperature? express your answer numerically.

An atom of any element must contain (1) an equal number of protons and neutrons (2) an equal number of protons and electrons (3) more electrons than neutrons (4) more electrons than protons

Above what fe2 concentration will fe (oh) 2 precipitate from a buffer solution that has a ph of 8.59? the ksp of fe (oh) 2 is 4.87*10-17.

The gases inside of a normal tire are usually measured when they are at ambient standard temperature (298 K) & under a controlled pressure of 32.

What is the equivalent mass of HBr in a complete neutralization reaction?

Coal can be converted to methane gas by a process called coal gasification. The equation for the reaction is the following: 2 C (s) 2 H2O (l) - -> CH4 (g) CO2 (g) What mass in grams of carbon is required to react with water to form 1.00 mol CH4

When more than one variable in an experiment is changed at a time, the scientist A. cannot tell which change produced the results. B. cannot accurately measure both variables at the same time. C.

Which statement describes how Earth compares to the moon?