A normal human body cell has a total of ___ chromosomes: ___ chromosomes come from the mother and ___ chromosomes come from the father.

Which of the following an inorganic compound? CH3 (CH2) 3CH3 pentane C6H12O6 glucose C4H10 butane H2O water molecule

My grandmother left me some silver years ago. I opened the box containing the silver and it had tarnished.

Recommend an element use to fill bottles that contain ancient paper. the element should be a gas at room temperature, should be denser than helium, and should not easily react with other elements.

Ethane and acetylene are two gaseous hydrocarbons. Chemical analyses show that in one sample of ethane, 2.65 g of carbon are combined with 0.665 g of hydrogen, and in one sample of acetylene, 4.56 g of carbon are combined with 0.383 g of hydrogen.

Plants take in and give off gases through their stems. true or false?

Ionic character of lih

The button batteries in small devices like watches are commonly composed of silver-zinc or mercury-zinc batteries.

What is the partial pressure of C? atm C

What are the 2 properties of glue?

A sample of CO2 gas has a volume of 12.0 L at STP. Calculate the number of moles of CO2 in the sample.