There is enough DNA in the average person's body to stretch from the sun to Pluto and back - 17 times?

T or F

A mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to gaseous products. The cylinder has a piston that moves in or out as necessary to keep a constant pressure on the mixture of 1 atm.

Aluminum burns in bromine producing aluminum bromide in a certain experiment, 6.0 g aluminum was reacted with an excess of bromine to yield 50.3 g aluminum bromide calculate the theoreteical and percent yields.

Jia observes that adding a solution of sodium hydroxide to a clear liquid turns the liquid pink. She makes a hypothesis about why the liquid changed color.

Identify one type of electromagnetic energy that has a shorter wavelength than green light.

What is a group of elements that form salts called

A canister of acetylene has a volume of 42 L. The temperature of the acetylene is 305 K and the pressure is 780 torr. Determine the amount of gas in the canister

In terms of the scientific method, the purpose of an experiment is: form a hypothesis test a hypothesis form a conclusion develop data

Which layer of the earth can only be studied by indirect means

Is Euglena heterotroph or autotroph

What is the mass of 5000. atoms of silicon