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GenaCL600 [577]
3 years ago
12

What type of bond holds the complementary bases together?.

Chemistry
1 answer:
olga55 [171]3 years ago
3 0

Answer:

hydrogen bonding

Explanation:

The two strands of DNA are held together by hydrogen bonds between complimentary nucleotides.

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borishaifa [10]

Answer:

omeone tell me something

Shut up and take my money

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No, I don't owe nothing

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I've seen greedy people hungry

Up in swarms, I've seen them running

Coming for more

Explanation:

6 0
4 years ago
What is the molarity of a solution of 1/2 mol of cu(no3)2 in 1/2 L water
sweet [91]
Molarity is mole divided by volume in litres.
0.5mol divide by 0.5L = 1M
6 0
4 years ago
Read 2 more answers
B. What do you notice about the density of the sinking objects? Dense objects feel very heavy for their size
puteri [66]

Answer:

The answer is below

Explanation:

The density of an object is its mass per unit of volume. Dense objects feel very heavy for their size, while for objects with low density they are very light for their size.  

Density is the ratio of mass to volume; it is given by:

Density (D) = mass (m) / volume (V)

An object sinks in water if the density of the object is greater than the density of water. While an objects floats on water if the density of the object is les than the density of water

4 0
3 years ago
The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride produced 22.4 of sodium upon deco
denpristay [2]
 1.21:1 = 22.4 : x    where x is the amount of fluorine produced.

So answer is 22.4 / 1.21 =  18.51
5 0
3 years ago
What is the mass of 0.2 moles of ethanol​
Verdich [7]

Answer:

<u>Answer</u><u> </u><u>is</u><u> </u><u>9</u><u>.</u><u>2</u><u> </u><u>grams</u>

Explanation:

Molar mass of ethanol

{ \bf{CH _{3}CH_{2}OH}} = (12 \times 2) + (6 \times 1) + (16) \\  = 46 \: g

for moles:

{ \sf{1 \: mole \: of \: ethanol \: weighs \: 46 \: g}} \\ { \sf{0.2 \: moles \: weigh \: (0.2 \times 46) \: g}} \\  = 9.2 \: g

4 0
3 years ago
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