What is the number of electrons in an atom that has 20 protons and 17 neutrons

If you had 100 ml of juice, how many milliliter so would be fruit juice

A scientists finds an organism that cannot move. it has many cells, produces spores, and gets food from its environment. in which kingdom does it belong? explain.

Zinc sulfide reacts with oxygen according to the reaction: 2ZnS (s) 3O2 (g) →2ZnO (s) 2SO2 (g) A reaction mixture initially contains 3.0 mol ZnS and 5.2 mol O2.

The salt formed by the reaction of the weak acid hydrocyanic acid, HCN, with the strong base potassium hydroxide is potassium cyanide, KCN. What is the hydroxide ion concentration of a 0.

Weight will increase as ... A.) Gravity Decreases B.) Gravity Increases C.) Number of particles increases D.) Number of particles decreases

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

What does a three letter chemical symbol mean