Chromium has the atomic number 24. How many electrons does a chromium atom need to receive from other atoms to satisfy the octet rule?

A 0.595 g sample of a metal, M, reacts completely with sulfuric acid according to the reaction M (s) + H 2 SO 4 (aq) ⟶ MSO 4 (aq) + H 2 (g) A volume of 231 mL of hydrogen gas is collected over water;

What kind of reaction is metal oxide + nonmetal oxide → ternary salt .

A man heats a balloon in the oven. If the balloon initially has a volume of 0.3 liters and a temperature of 25 0C, what will the volume of the balloon be after he heats it to a temperature of 275 0C?

Why did Robert Hooke choose the word "cell"?

Is platinum reactive or I reactive element and why?

In a titration 25.0 ml of a. 20 M NaOH solution is used to neutralize 10.0 ml of HCl. Write the equation for this neutralization reaction and calculate the molarity of the acid.

4*C: 4cm 8*C: 10cm 12*C: 14cm 16*C: 18cm 20*C:24cm 24*C: 12cm what is the independent variable, dependent variable and three constant variables?

In the chemical laboratory, why do scientists use a mortar and pestle? a. to increase surface area of a solute b. to decrease surface area of a solute c. to increase temperature of a solute d. to decrease temperature of a solute

Is a mixture being separated into two elements a chemical change

Which electrons are lost by an atom of iron when it forms the Fe3 + ion? A. One s orbital electron and two d orbital electrons B. Two s orbital electrons and one d orbital electron C. Three s orbital electrons D. Three d orbital electrons