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3 years ago

Which of the following depicts a molecule of DNA? A, B, C, D?

Chemistry

1 answer:

Ghella [55]3 years ago

7 0

Answer:

D. I've watched Jurassic park uwu

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Which statement is true of a reversible reaction at equilibrium?

Vedmedyk [2.9K]

Answer:

The concentration of reactants and the concentration of products are constant.

Explanation:

pls mark as brainliest

7 0

3 years ago

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A solution of hydrochloric acid (HCl, 25.00 mL) was titrated to completion with 34.55 mL of 0.1020 M sodium hydroxide. What was

kati45 [8]

Answer:

0.1410 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1

The mole ratio of the base, NaOH (nB) = 1

Next, the data obtained from the question. This include:

Volume of acid, HCl (Va) = 25 mL

Volume of base, NaOH (Vb) = 34.55 mL

Concentration of base, NaOH (Cb) = 0.1020 M

Concentration of acid, HCl (Ca) =?

CaVa / CbVb = nA/nB

Ca × 25 / 0.1020 × 34.55 = 1/1

Ca × 25 / 3.5241 = 1/1

Cross multiply

Ca × 25 = 3.5241 × 1

Ca × 25 = 3.5241

Divide both side by 25

Ca = 3.5241 / 25

Ca = 0.1410 M

Therefore, the concentration of the acid, HCl is 0.1410 M

3 0

3 years ago

I still need a bit of help.

Ostrovityanka [42]

H. The atom would no longer be aluminum
If you added a proton to an atom of aluminum it would become a silicone ion

5 0

3 years ago

What is Mg + O2 —> MgO

Agata [3.3K]

Answer:

this is a oxidation reaction

product is magnesium oxide

the balanced equation is

2Mg + O2 -> 2MgO

5 0

3 years ago

Please I need helppppp

lord [1]

Answer:

$FeCl_{2} +H_{2} S->FeS + 2HCl$

Explanation:

I am assuming that we have to balance this equation. On the left side, we have one Fe, 2 H, 2 Cl, and 1 S. On the right side, we have 1 Fe, 1 H, 1 Cl, and 1 S. Adding a 2 as a coefficient in front of the HCl on the right side will make 2 H and 2 Cl instead, balancing the overall equation.

3 0

3 years ago

Read 2 more answers