How many kilocalories of heat are required to raise the temperature of 225 g of AL (Cal = 0.21 cal/gC) from 20.0 C to 100 C

What are sources of electricity? List as many as you can

Balance the equation NH4OH + HCl + H2O = NH3 + Cl2 + H2 + H2O

Which of the following is the most effective means for the body to dissipate heat when the temperature and radiant heat of the environment are higher than the body temperature? Group of answer choices Evaporation Radiation Conduction Convention

If 5 moles of Fe2O3 react with excess CO, what is the maximum amount of age and CO2 that can be formed?

When studying seismic records from all over the globe, what did scientists find out about the pattern of earthquakes? A-Many earthquakes are concentrated in narrow zones near earth's poles.

Butane gas is used as the fuel in disposable lighters. It burn in oxygen to form carbon dioxide gas and water vapor. What mass of carbon dioxide is produced when 53.3 g of butane is burned in 103.9 g of oxygen

Suppose a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was diluted by placing 1.00 mL of the concentrated solution in 4.00 mL of water.

What kinds of scientific investagations involve making observations

According to the kinetic molecular theory, when a gas particle hits something what will happen?

Protons and neutrons are made from which of the following? hadrons down quarks only up quarks and down quarks up quarks only