4. How many moles of NaOH(s) would be required to react with 1.90 g of Cu(NO3)2 (aq) according to the balanced equation:
Cu(NO3)2(aq) + 2 NaOH(aq) → Cu(OH)2(s) + 2 NaNO3(aq)
NEED ANSWER ASAP PLS!

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

Compare and contrast refraction of light and sound will give brainliest

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.