Answer:
30 positive charged protons
Nuclear fusion in the sun involves hydrogen (H) atoms
combining to form helium (He). A student claims that since the atmosphere
contains hydrogen, any fusion reaction on Earth would result in an uncontrolled
chain reaction. What is wrong in the student’s reasoning is that the uncontrolled
chain reactions can only happen during nuclear fission.
Protons and neutrons are in the nucleus of an atom, whereas electrons are present in orbitals, or shells, outside an atom. Electrons are negatively charged, protons positive, and neutrons have no charge, or are neutral. Protons and neutrons have a relative mass of approx. 1 Atomic Mass Unit (amu), whereas electrons have a relative mass of approx 0.00055 amu.
Answer:
The actual yield from this reaction is 92.39 grams CaCl2
Explanation:
Step 1: Data given
% yield = 80.34 %
Expected amount of Calcium chloride (CaCl2) = 115 grams
Step 2: The balance equation
CaCO3 + 2HCl → CaCl2 + CO2 + H2O
Step 3: Calculate actual yield
% yield = 80.34 % = 0.8034 = actual yield / theoretical yield
actual yield = 0.8034 * 115.0 grams
actual yield = 92.39 grams
The actual yield from this reaction is 92.39 grams CaCl2
