Which of the following statements is correct?
1 answer:
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Answer:
The two complex numbers are
Explanation:
We have to form two complex numbers of the form
such that and d are irrational numbers and b and c are rational numbers.
We know that are irrational numbers.
5 and 6 are rational numbers.
We put
Thus, the two complex numbers are:
This problem is providing the ratio of nitrogen to oxygen by mass in nitrogen monoxide, NO, as 7.0:8.0 and asks for the same ratio but in NO₂ and N₂O₇. After doing the calculations, the results are 7.0:16.0 and 1.0:4.0 respectively.
<h3>Mass ratios:</h3>In chemistry, one can calculate the mass ratios in chemical formulas according to the atomic mass of each atom. In such a way, one knows the mass ratio of nitrogen to oxygen in NO is 7.0:8.0 because we divide the atomic mass of nitrogen by oxygens:
Now, for chemical formulas with subscripts, one must multiply the atomic mass of the element by the subscript in the formula, which is the case of NO₂ and N₂O₇ as shown below:
Therefore, the results for NO₂ and N₂O₇ are 7.0:16.0 and 1.0:4.0 respectively
Learn more about atomic masses: brainly.com/question/5566317
Answer: 708.2 grams
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
Given : 38 g of is dissolved in 100 g of solution.
Density of solution = 1.285 g/ml
Volume of solution =
Thus if 77.8 ml of contains = 38 g of
1.45L= 1450 ml of contains =
of
Therefore, the mass of the sulfuric acid in a car battery is 708.2 g