What is the sum of 0.0421 g + 5.263 g + 2.13 g to the

correct number of significant digits?

A) 7 g

B) 7.4 g

C) 7.44 g

D) 7.435 g

Is this an aromatic hydrocarbon? Why or why not? Yes, because the carbon chain is made up of single bonds. Yes, because the carbon chain is ring shaped. No, because the carbon chain is composed of only a single ring.

Write a balanced chemical equation for the neutralization reaction between phosphoric acid and rubidium hydroxide.

What do you think make abjects change temperature

Why boric acid considered as a weak acid

How are element identified in terms of their atoms

The word atom means invisible?

A pycnometer weighs 25.60 g empty and 35.55 g when filled with water at 20°C. The density of water at 20°C is 0.9982 g/ml. When 10.20 g lead is placed in the pycnometer and the pycnometer is again filled with water at 20°C, the total mass is 44.83 g.

How does weathering affect the surface area of a rock? Explain your answer.

How would each of the following procedural errors affect the results to be expected in this experiment? Give your reasoning in each case. (A) Not all of the liquid was vaporized when the flask was removed from the water bath.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?