Is pencil lead a heterogeneous or homogeneous mixture?

What mass of ni2 is produced in solution by passing a current of 67.0 a for a period of 12.0 h, assuming the cell is 85.0 % efficient?

How does respiratory failure affect the body? A. Energy is not given to the body B. Carbon builds up in the body C. Oxygen does not make it to the brain D. Pathogens attack the systems of the body

An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has an atomic number of a. 38 and a mass number of 86. b.

At the start of this experiment your vessel will be evacuated. The precision (readability) of your balance is 1 mg, this means masses below 0.5 mg read as zero. Suppose the volume of the vessel is 0.6L and temperature is 30°C.

What molecule has a single bond

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs