How much does a gold bar wiegh and how much is it wotrth

If 3.5 g of element X reacts with 10.5 g of element Y to form the compound XY. what is the percent by mass of element X in the compound? The percent by mass of element Y?

Convert 32mL into liters

What is homogeneous series

The force of gravity between two objects depends on their? and the distance between them.

In a constant-pressure calorimeter, 50.0 mL of 0.320 M Ba (OH) 2 was added to 50.0 mL of 0.640 M HCl. The reaction caused the temperature of the solution to rise from 23.76 °C to 28.12 °C.

In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction? 18 g 54 g 72 g 90 g

In the following combustion reaction, what is the mole ratio of diatomic oxygen to water?2 c2h6 7 o2 ( g. - - > 4 co2 6 h2o a. 6/7 b. 7/4 c. 7/6 d. 6/7

1. A cube has a mass of 40 grams. One side of the cube has a length of 3.4. What is the Density of the cube?

Which of the following is the trend down a period? A. The number of complete electron shells increases by one. B. The number of complete electron shells stays the same. C. The number of outer shell electrons decreases by one. D. None of these.

How does sugar affect the rate of cellular respiration in yeast?