You wish to prepare an hc2h3o2 buffer with a ph of 4.34. if the pka of is 4.74, what ratio of c2h3o2/hc2h3o2 must you use?

How many moles of water are produced when 3.25 moles of co2 are formed during the combustion of methyl alcohol (ch3oh) ? 2ch3oh 3o2 → 2co2 4h2o 1.62 moles 3.25 moles 6.50 moles 13.00 moles

Why does ice float on water? the temperature of ice is lower than the temperature of water. the temperature of water and ice are the same. the density of ice is less than the density of water. the density of ice is greater than the density of water.

If a solute in water has a concentration of 0.12 mg/mL and has a concentration in ether of 0.60 mg/mL, what is the distribution coefficient, K, between ether and water

What will happen to the volume if the number of moles of a gas is decreased at constant temperature and pressure? The volume will increase. The volume will decrease. The volume will remain the same. The volume will be negative.

Could someone sort these into independent and dependent variables; time taken amount of tablet brand of tablet

Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?

How many significant figures are in the measurement 40,500 mg? a) two b) three c) four d) five

What is the earth thinnest layer?

How does an increase in temperature at which a reaction takes place cause an increase in reaction rate

One side of a cube is 5 cm long. What is the cube's volume? 5 15 25 125