Explain how to separate a mixture of sand and pebbles.

What affect does attendance have on students' grades in science class? Write the independent variable, the dependent variable, and the hypothesis.

What do ionic bond and covelant bond have in common? A) Both types of bond involve only one electron B) both type of bonds involve valance electrons C) electrons are transferred from one atom to another in both types of bonds D) Electrons are shared

A 275-g sample of nickel at 100.0°C is placed in 100.0 g of water at 22.0°C. What is the final temperature of the water? Assume no heat transfer with the surroundings. The specific heat of nickel is 0.444 J/g·°C and the specific heat of water is 4.

The density of glycerol is 1.26 g/mL. The density of mercury is 13.6 g/mL. How many grams of glycerol will occupy the same volume as 14.4 grams of mercury?

What are liters, millimeters, and cubic centimeters used to measure

A 7.20 L container holds a mixture of two gases at 29 °C. The partial pressures of gas A and gas B, respectively, are 0.179 atm and 0.749 atm. If 0.

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.