The answer is C. A, B, and C would depend on what type of electron it is.
Answer:
72 Newton
Explanation:
force=mass x acceleration due to gravity
<u>Answer:</u> Moles of iron for the given amount is 17.90 moles.
<u>Explanation:</u>
We are given 1 kg of iron and we need to find the moles of it. To calculate the moles, we use the following equation:
Mass of iron given = 1kg = 1000 grams (Conversion Factor: 1 kg = 1000g)
Molar mass of iron = 55.85g/mol
Putting values in above equation, we get:
Hence, moles of iron for the given amount is 17.90 moles.
Answer:
2.41 g of NaCl is needed
Explanation:
Molarity of solution = (Number of moles of solute)/(Volume of solution in Litre)
Here sodium chloride (NaCl) is solute in saline solution
275 mL = 0.275 L
So, number of moles of NaCl in 275 mL saline solution =
Molar mass of NaCl = 58.44 g/mol
Number of moles = (mass)/(molar mass)
So, mass of 0.04125 moles of NaCl =
So, 2.41 g of NaCl is needed
6+2=115 and its good it took test