Balance the combustion reaction:
a C₂H₂ + b O₂ → c CO₂ + d H₂O
Count the atoms on both sides of the reaction:
• C : 2a = c
• H : 2a = 2d
• O : 2b = 2c + d
Let a = 1; then c = 2 and d = 1, and it follows that
2b = 2•2 + 1 = 5
so that b = 5/2, and the balanced reaction is
1 C₂H₂ + 5/2 O₂ → 2 CO₂ + 1 H₂O
or, with integer coefficients,
2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O
C₂H₂ has a molar mass of about 26.038 g/mol, so we have a starting amount of
(64.0 g) (1/26.038 mol/g) ≈ 2.46 mol C₂H₂
According to the reaction, we produce H₂O in a 1-to-1 ratio with the C₂H₂ that is burned up, so we end up with about 2.46 mol H₂O.
What can cause a decrease in calcium absorption is; High Levels of Sodium
<h3>What causes poor calcium absorption?</h3>
Calcium absorption varies by type of food. The absorption of calcium from dairy products and fortified foods is about 30%.
Some compounds in plants like oxalic acid and phytic acid can decrease calcium absorption by forming indigestible salts with calcium, thereby decreasing its absorption.
Now, we can conclude that calcium absorption is decreased by high levels of sodium because excessive salt can interfere with calcium absorption.
Read more about Calcium Absorption at; brainly.com/question/461228
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