If 25.0 g of water at 21c is mixed with 45.0 g of water at 75c, what is the final temperature of the mixture?

a. 40c

b. 48c

c. 56c

d. 63c

e. 38c

The three isomers of pentane have different (1) formula masses (2) molecular formulas (3) empirical formulas (4) structural formulas

What energy occurs when a plant uses energy from the sun to make surgar stored in fruit?

How many mL of a 4.50M NaBr solution are needed to make 250 mL of a 0.75M solution of NaBr?

What energy conversion is occurring when energy is given off from the sun? Nuclear energy is converted to thermal energy. Nuclear energy is converted to radiant energy. Radiant energy is converted to thermal energy.

Determine the percent composition from the following analytical dаta: a. An experiment was performed in which 6.1 g table salt produced 2.6 g Cl in the sample

If a new substance is formed in a chemical reaction, what atoms do they consist of?

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.

What is the new concentration, after diluting 300 mL of a 1.5 M LiCl solution to 1L

The answer that he gave was wrong