How many joules of heat will be needed to change 1g of ice from - 15°C to 0°C

Which is true about each element in a period or horizontal row of the periodic table? A. Each element has one more outer shell than the element before it. B. Each element has one more outer electron than the element before it. C.

What does physical characteristics mean

Which statement best describes a weak acid? A. turns blue litmus paper red B. conducts electricity and tastes sour C. partially ionizes and is corrosive to metals D. fully dissociates and establishes an equilibrium in solution

9.50 ml of liquid has a mass of 10.568g. Calculate the density of the liquid

Which statement best describes how chemical equations demonstrate conservation of mass

A small 15 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

Liquid water is heated until it boils and becomes water gas. Which statement is true about the water?

You are conducting an experiment on plant growth. You take a plant fresh from the soil that weighs 5 kilograms (kg). Then you dry the plant overnight and determine the dry weight to be 1 kg.

What is the ratio of Fe+3 ions to O2 - ions in a neutral compound? a. 1:2 b. 2:1 c. 2:3 d. 3:2

What is the specific heat capacity of a 17.5g sample of an unknown metal that releases 6700J of heat when it cools from 90 to 25 degrees C?