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Nuetrik [128]
3 years ago
10

All living things are made of organic compounds which contain the element:

Biology
2 answers:
romanna [79]3 years ago
6 0

hydrogen is my guess

Gekata [30.6K]3 years ago
5 0

Answer:

Explanation:

I believe the answer would be hydrogen

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What do you call the reproduction in plants where the male and female parts of the flowers of the plants are involved?
MatroZZZ [7]

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A water-soluble hormone approaches its target cell. Which of the following happens first?
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The hormone signal will be transduced through the cytoplasm of the target cell.
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3 years ago
A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami
Basile [38]

Answer:

560 mg of powder 1 and 160 mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

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Total weight of vitamin B2 in the mixture is equal to 200 mg

Equation 1

0.1 X + 0.15 Y= 80

Equation 2

0.3 X + 0.2 Y= 200

Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

7 0
3 years ago
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