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3 years ago

6

Explain two reasons why we can conclude that the rise of the water in the glass tube is due to root pressure and not transpirati

on or capillarity

1 answer:

pochemuha3 years ago

6 0

Kskskfjeikwkisksksmkd

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How many moles of iron in a sample that contains 7.91×10^23 atoms of iron?

vazorg [7]

Answer: 1.31

Explanation:

No.of moles = given no.of atoms/Avagadro number

= 7.91×10^23 / 6.022 x 10^23

= 1.31

therefore, no.of moles = 1.31

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5 0

2 years ago

Convert the following to Celsius

Naya [18.7K]

9. (80-32)5/9

48×5/9

240/9

26.66°C

9. (90-32)5/9

58×5/9

32.22°C

10 (212-32)5/9

180×5/9

20×5

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3 years ago

What are complementary bases?

Radda [10]

Answer:

Two Sections that contain nitrogen of a nucleotide that bond together to connect strands of DNA or RNA.

Explanation:

3 0

3 years ago

A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling t

marshall27 [118]

Mass of sodium thiosulfate $Na_{2}S_{2}O_{3}$ is 110. g

Volume of the solution is 350. mL

Calculating the moles of sodium thiosulfate:

$110. g Na_{2}S_{2}O_{3} * \frac{1 mol Na_{2}S_{2}O_{3}}{158.1 g Na_{2}S_{2}O_{3}}$ = 0.696 mol $Na_{2}S_{2}O_{3}$

Converting the volume of solution to L:

$350. mL * \frac{1 L}{1000 mL} = 0.350 L$

Finding out the concentration of solution in molarity:

$\frac{0.696 mol}{0.350 L} = 1.99 mol/L$

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3 years ago

Which process was responsible for producing gases in the early atmosphere?

andre [41]

Answer: The early atmosphere

Explanation: Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence. The early atmosphere was probably mostly carbon dioxide, with little or no oxygen.

6 0

3 years ago

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