Answer:
Precautions
Explanation:(Grammar Check)
Both eggs would be born but they would not be twins because twins are produced by one egg
<h3>
Answer:</h3>
54 g
<h3>
Explanation:</h3>
- The reaction between carbon and oxygen gas is given by the equation;
C(s) + O₂(g) → CO₂(g)
We are given;
18 g of Carbon
72 g of Carbon dioxide
- We need to calculate the amount of oxygen needed for the reaction.
- From the law of conservation of mass in chemical equation, the mass of the reactants is equal to the mass of the product.
Therefore;
Mass of Oxygen gas + mass of the carbon = Mass of carbon dioxide
Therefore;
Mass of Oxygen gas = mass of carbon dioxide - mass of carbon
= 72 g - 18 g
= 54 g
Therefore, the mass of Oxygen needed would be 54 g
Answer:
A
Explanation:
B is incorrect because asexual reproduction produces an offspring exactly the same as it's parent. Thus the probability does not need to be calculated.
C and D logically do not make sense since B is incorrect and A is correct. I provided the explanation why it is incorrect above.
Thus A is the correct answer.
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Answer:
1.02 (or 1.03 if rounded)
Explanation:
Given 16.4 grams of oxygen gas, you would want to write that down to set up your unit conversions.
16.4 g O2/1 * 1 mol of O2/31.998 g O2 * 2 mol H2O/1 mol O2
Multiply the numbers on the top and divide that by the product of the numbers on the bottom.
16.4 * 1 * 2 = 32.8
1 * 31.998 * 1 = 31.998
32.8/31.998 = 1.025...
Don't forget to consider the number of significant figures if it asks!
