Calculate how many grams of NaCl (58.44 g/mol) will be needed to prepare 20mL of each M NaCl solution. Use the values given in the problem. Enter values to 2 decimal places. 0.1 M = ___ g

0.4 M = ___ g

1.0 M = g

1.5 M = g

Please show work, I need to understand what formula to use.

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

Isopropyl alcohol, (ch3)2choh, is a common solvent. determine the percent by mass of hydrogen in isopropyl alcohol. a) 6.71% h b) 13.4% h c) 25.0% h d) 53.3% h

If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms