<span>Gold is a stable heavy metal that is easily formed into uniform and thin sheets of measurable property. Alpha particles are relatively massive (compared to electrons) and so deflection is less dramatic and more easily measured. This is the property that prompted Rutherford to use alpha particles and gold. </span>
The particles that are positively charged were fired at the gold foil and when it reached that goldatoms’ nuclei, which are also positively charged, the particles were repelled back
350 nm because the magnesium reacts very aggressively toward these kind of situations.
Answer:
13.45 grams of NaCl will be produced
Explanation:
Given:
Mass of CuCl2 = 15 grams
Molar mass of CuCl2 = 134.5 g/mol
Mass of Na(NO3) = 20grams
Molar mass of Na(NO3) = 85 g/mol
To find:
Amount of Sodium chloride produced = ?
Solution:
<u>No of moles of CuCl2 = 15/134.5 = 0.11 moles</u>
<u>No of moles of Na(NO3) = </u><u>2</u><u>0</u><u>/</u><u>8</u><u>5</u><u> </u><u>=</u><u> </u><u>0.23 moles,</u>
<em><u>1CuCl2 + 2Na(NO3) --> 1Cu(NO3)2 + 2NaCl</u></em>
from the reaction, 1 mole of copper chloride reacts with 2 mole of NaNO3 to produce 2 moles of sodium chloride.
Hence, 0.11 mole of copper chloride will react with 0.23 mole of NaNO3 to produce 0.23 moles of sodium chloride.
Mass of 0.23 moles of NaCl = 0.23 × M.M of NaCl
<em><u>(Molar mass of NaCl = 58.5)</u></em>
Mass of 0.23 moles of NaCl = 0.23 × 58.5 = 13.45 grams
<em><u>Thanks</u></em><em><u> </u></em><em><u>for</u></em><em><u> </u></em><em><u>joining</u></em><em><u> </u></em><em><u>brainly</u></em><em><u> </u></em><em><u>community</u></em><em><u>.</u></em>
The moles of nitrogen in 0.30 mole of caffeine is calculated as follows
write the chemical formula = C8H10N4O2
for this case from the chemical formula we have 4 atoms of nitrogen in caffeine
therefore moles of nitrogen in caffeine = 4 x0.30 =1.2 moles
Natural hope this helps!!
