How much thermal energy is needed to raise the temperature of 4g of water

from 25°C to 75°C if water has a specific heat of 4.186 J/gºC

1. 850,000J

2. 840,000J

3. 740,000)

4. 840)

Which statement is correct about the location of electrons in an atom according to the Quantum mechanical model? A) Electrons are located inside the nucleus. B) Electrons are located in the cloud-like areas around the nucleus.

Coffee has a pH of about 5. Coffee is?

Solid potassium hydroxide koh decomposes into gaseous water and solid potassium oxide. write a balanced chemical equation for this reaction.

Common units of electrical force are: A coulombs B Newtons C meters

What describes color and streak?

An industrial chemist studying bleaching and sterilizing prepares a hypochlorite buffer using 0.350 M HClO and 0.350 M NaClO. (Ka for HClO = 2.9 * 10-8) Find the pH of 1.00 L of the solution after 0.030 mol of NaOH has been added.

3) _C2H4O2 + _ 02 → _ CO2 + _ H2O

Choose the Brønsted-Lowry acids and bases in the following equation: HCN + OH=H2O + CNC A) acids HCN, CNº bases OH, H20 B) acids CN, OH bases HCN, H2O C) acids HCN, H20 bases OH", CN D) acids OH", H20 bases CN", HCN E) acids HCN, OH bases H20, CN

What food molecules make up lettuse

Is moss a decomposer?