HEL PLZ A student pushes a 40-N block across the floor for a distance of 10 m.

How much work was done to move the block?

400 Pascals

400 Newtons

400 Joules

400 Watts

1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 → 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl → 3. combine magnesium metal and hydrochloric acid solution. mg + hcl → 4. electrolysis (splitting) of water. h2o → 5. burning magnesium. mg + o2 →

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.