The concentration of a salt solution in terms of mass by mass percentage is 20% and the mass of the solution is 500g determine the mass of solute present in the solution

Solid objects have no mass in space

In the reaction, C3H8 (g) + 502 (g) - 3CO2 (g) + 4H2O (g), all of the reactants and products are in what phase? O solid O liquid o gas aqueous

The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below? 7Li A. 2 neutrons B. 13 neutrons C. 4 neutrons D. 7 neutrons

You have a box that has a volume of 412cm and weighs 42g what is its density

A molecule is a (n) - A. element that physically combines with another element. B. particle composed of two or more atoms bonded together covalently. C. element that isn't bonded to another element.

Fish need at least 4 ppm dissolved o2 for survival. part a what is this concentration in mol/l?

How does a runoff get polluted.

Anatom that has lewer neutrons than protons and more electrons than protons is

Which can have either a positive charge or a negative charge when they are released during radioactive decay? A. alpha particles B. beta particles C. positrons D. photons

Which ionic compound is water soluble? A. cuS B. NH4NO3 C. SrSO4 D. ZnF