How many kilojoules of heat energy are

absorbed when 100.0 g of water are heated

from 20.0°C to 30.0°C?

(1) 4.18 kJ

(3) 418 kJ

(2) 41.8 kJ

(4) 0.418 kJ

Write the chemical equation for the decomposition of sulfuric acid using the 9v battery? (no sulfate ion is not involved in this reaction)

How are electromagnetic waves affected as the frequency of the waves increases? A) energy and wavelength increase B) energy and wavelength decrease C) energy decreases, wavelength increases D) energy increases, wavelength decreases

Hclo is a weak acid (ka=4.0x10^-8) and so the salt naclo acts as a weak base. what is the ph of a solution that is 0.037 m in naclo at 25 c

A location in Florida has a very high rate of unemployment. A mining company plans to start limestone mining in the location.

What is PO2 in prefix form?

How does phosphorus enter the human body?

When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide