How much would 4 moles of nickel (Ni) weigh in grams? (round your answer to the nearest whole number and don't include units)

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?