How many moles of helium are in 16 g of the element

Why isn't energy required for the passenger molecule to be carried across the cell membrane by the carrier molecules?

Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. C (s) + H2 (g) - -> C2H6 (g) ?

The specific heat of nickel is 0.44 J/g*⁰C. How much energy needed to change the temperature of 95.4g of nickel from 32⁰C to 22⁰C. Is the energy absorbed or released?

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

How many valence electrons does chlorine (Cl) have? View the periodic table. A. 4 B. 6 C. 7

If you walk toward a Van der Graaff generator, the effect of its electric field would get weaker as you got closer to it, true or false.

The volume of a single nickel atom is 8.10*10-24 cm3. what is the volume of a nickel atom in microliters?

A college student driving to classes produces 8000 kg of carbon dioxide (CO2) in a year, contributing to global warming. What volume of CO2 is produced? (The density of carbon dioxide is 2.0 g/L.)

For the first five steps of glycolysis, the appropriate sequence of enzymes is: A. phosphofructokinase-1 (PFK-1). B. hexokinase / glucokinase. C. fructose bisphosphate aldolase. D. Phosphoglucoisomerase. E. triose phosphate isomerase (TPI). a.

2NO + O2 → 2NO2 What type of chemical reaction is shown above? a combustion reaction b double displacement C synthesis d decomposition e single displacement