What is a change in heat energy when 40 g of water at 25°C is raise to 60°C

What is thomas edison most known for

The moon will always appear over the eastern horizon at the same time each night. true or false

If a total distance of 750 m is covered in a time interval of 25 s, the average speed is? 3, 974 mph 3 mph 30 mph 30 m/s

Gold has a density of about 20g/mL. If I measured out 2mL of gold, I would expect it to have a mass of about ___ grams.

1. the purpose of the aqueous solutions in a galvanic cell is to? a. provide ions to be oxidized and reduced b. provide a path for the free flow of electrons c. maintain charge balance in the cell d. correct any volume changes in the cell 2.

Mildew is a fungus that grows in wet areas and can slowly grow from

The salts in the sea come from A) weathering and erosion of rocks. B) acid rain. C) particles falling from space. D) organisms that live in the sea.

Convert 2.50 x 10^5 seconds into years

How is the law of multiple proportions related to molecular formula and their mass ratios?

What are the products in a sodium and water reaction?