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3 years ago

25.0 mL of 2.00M solution are diluted to 85.0 ml. What is the new concentration?

Biology

1 answer:

k0ka [10]3 years ago

7 0

Explanation:

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hope this helped!:) if it did pls brainlist

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2) Use a Punnett square to help answer the question.

Snowcat [4.5K]

For question 4 the answer is 50% I am taking the same Test

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3 years ago

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Which of these is unique to flowering plants?haploid gametophytes,an embryo surrounded by nutritive tissue,double fertilization,

fiasKO [112]

Answer:

double fertilization

Explanation:

Flowering plants or angiosperms are seed-producing plants with the ability to produce reproductive organs-flowers and fruits with seed in it (unlike gimnosperms which contain naked seed). Another distinctive feature of angiosperms is their reduced gametophytes. This feature most likely reduces the time between pollination and fertilization. Fertilization in flowerin plants is double, meaning that two sperm cells fertilize ovule cells(egg cell and central nuclei cell): one forms diploid zygote which will develop in embryo, while other form triploid cell which will develop into endosperm (provides nutrition for the embryo).

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4 years ago

Yeast cells are recovered from a fermentation broth by using a tubular centrifuge. Sixty percent of the cells are recovered at a

Serga [27]

Answer:

$\\ \omega = 5033.22 \ rpm$

Explanation:

Given that:

$R_1 = 0.6\\\\R_2 = 0.95\\\\\omega_1 = 4000 \ rpm\\\\\omega_2 = ???\\\\Q_1 = 12\ l/min\\\\Q_2 = 12\ l/min$

For a continuous centrifuge ; solid recovery R ∝ $\frac{\omega^2}{Q}$

where;

ω = angular velocity of the centrifuge in rpm

Q = flow rate

SO;

$R_1 \alpha \frac{4000^2}{12}$

$R_2 \alpha \frac{\omega^2}{12}$

$\frac{R_1}{R_2} = \frac{4000^2}{12}$ ÷ $\frac{\omega^2 }{12}$

$\frac{R_1}{R_2} = \frac{4000^2}{12} * \frac{12}{\omega^2}$

$\frac{R_1}{R_2} = \frac{4000^2}{\omega^2}\\\\\frac{0.6}{0.95} = \frac{4000^2}{\omega^2}$

${\omega^2} = \frac{4000^2*0.95}{0.6}\\\\\\{\omega} = \sqrt{ \frac{4000^2*0.95}{0.6}}\\\\\\ \omega = 5033.22 \ rpm$

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3 years ago

Which method of genetic recombination is illustrated in the diagram?

asambeis [7]

A. independent assortment

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3 years ago

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What contains dissolved carbon?<br><br> A- Atmosphere<br> B- Sinks<br> C- Oceans and lakes

alekssr [168]

Well, dissolved carbon is basically carbon, and carbon and other atmospheric gases dissolve in water. So that would most likely lead to the answer being oceans and lakes.

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4 years ago