Is water a stubstance

Winnipeg is refilling the pool. how many gallons of water will it take if the pool is 50m by 25m by 1.5m?

The product of the measurements 2.05 cm x 32 cm should be rounded to a. 1 significant figure b. 2 significant figures c. 3 significant figures d. 5 significant figures

Answer the following and round to the correct number of significant figures (don't forget units). a) 0.02123 m + 1.12 m + 0.00123 m = b) 2.3 cm - 1.23 cm + 120 cm = c) 25,430 km - 3,500 km + 200 km = d) (1.21 x 105) x (2.6 x 103) = e) 7.13 mm x 9.

Convert 95 kPa to mmHg

What indicates a chemical reaction has occurred?

For the chemical reaction H2 + CO2 → H2O + CO, the energy contained in the reactants is 394 kJ, and the energy contained in the products is 352 kJ, assuming 1 mol of each substance is present. Which of the following statements is true? A.

Why is particle size important in a heterogeneous catalyst

In a scientific experiment, the one variable that is purposely changed to test a hypothesis is called the manipulated variable. true or false

Consider separate 100.0-g samples of each of the following: nh3, n2o, hcn, n2h4, and hno3. which of the samples has the greatest mass of nitrogen?

How many grams of iodine are needed to prepare 28.6 grams of ICl