If you have 5 grams of product after a chemical reaction, how many grams of reactants did you have at the start of the reaction?

Pb (NO3) 2 (aq) + HCl (aq)

What will be the final speed of an electron released from rest at the negative plate?

In the following balanced neutralization reaction equation, how many moles of HCl are required to completely neutralize 0.040 moles of NaOH? HCl + NaOH → NaCl + H2O 0.020 moles 0.080 moles 0.040 moles 1.0 mole

Sodium concentrations are higher outside and glucose concentrations are higher inside the cell. Using the same membrane protein for Na + and glucose transport, what is it called when a Na + electrochemical gradient is used to drive glucose transport

Which element is likely to gain one electron when it combines chemically with another element? a potassium b krypton c gold d chlorine?

The thermal effect of the water formation reaction is 286 kj. what will be the thermal effect of its decomposition? why?

Given 13.5 grams of substance Z, if the substance absorbs 36 kilojoules of energy and the temperature increases by 25 degrees Celsius, what is the specific heat of the substance? 1.07 x 102 J/g·°C 1.22 x 104 J/g·°C 1.07 x 10-1 J/g·°C 1.

DNA is a nucleic acid made of building blocks called nucleotides. Which of the following options make up nucleotides?

A person drinks eight glasses of water each day, if each glass contains 300mL how many liters of water does a person drink in a year?

An organic compound contains C=61%, H=11.8% and O=27.12%. Calculate the empirical formula and molecular formula of the compound. The vapour density of the compound is 59.