Answer : The concentration of solution in ppm is, 500 ppm
Solution : Given,
Mass of solute (glucose) = 0.125 g
Mas of solution = 250 g
Parts per million (ppm) : It is defined as the mass of a solute present in one million 
parts by the mass of the solution.
Formula used :
Now put all the given values in this formula, we get
Hence, the concentration of solution in ppm is, 500 ppm
Ionic compounds are made up of cations and anions.
So, C would be the correct answer
Gonna have to go with A since two genes create a new one example is parents having a kid that’s how I understood it sorry if it’s wrong or I misunderstood
In an ionic bonds, ions are bonded together by the attraction of oppositely charged ions. A covalent bond is a chemical bond where electron pairs are shared between elements. Hope this helps!
Answer:
2.047x 10²⁴ atoms
Explanation:
To calculate the n° of moles of Ca that they are in 137 g, we can use the next relation:
n = mass/atomic mass = (137 g)/(40.078 g/mol) = 3.4 mol.
For each mole of a molecule contains Avogadro's number of molecules (NA = 6.022 x 10²³).
Using cross multiplication:
1 mole of Ca contains → 6.022 x 10²³ atoms.
3.4 moles of Ca contains → ??? atoms.
∴ 3.4 mole of (137 g) Ca contain = (3.4 mol)(6.022 x 10²³) = 2.047x 10²⁴ atoms.
