How many significant figures are in the measurement 230 kg?

Which list consists of elements that have the most similar chemical properties? (1) Mg, Al, and Si (3) K, Al, and Ni (2) Mg, Ca, and Ba (4) K, Ca, and Ga

What is the hybridization of the central atom? A. sp B. sp3d C. sp3d2 D. sp2 E. sp3

Lower latitudes tend to have

Which of the following statements best describes the phrase "like dissolves like."? A. the only true solutions are formed when water dissolves a nonpolar solute. B. the only true solutions are formed when water dissolves a polar solute. C.

How much oxygen gas can be produced through the decomposition of potassium chlorate (KClO3) if 194.7 g of potassium chlorate is heated and fully decomposes? The equation for this reaction must be balanced first. KClO3 (s) - > KCl (s) + O2 (g) A. 194.

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

The density of rubbing alcohol is 0.785g/mL at 25 Celsius. Calculate the mass of 15.0 mL of the rubbing alcohol.

Is the universe an isolated system?

1000ml of a gas is cooled from 500 K to 250 K, what is it's final volume? A. 250 ml B. 1000 ml C. 500 ml D. 750 ml E. 2000 ml

A reacton has a theoretical yield of 22.8g. When the reaction was carried out, 15.1g of the product was obtained. What is the percent yield?