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3 years ago

What is the complementary DNA sequence to A-T-T-G-C-A?

Chemistry

1 answer:

Ivan3 years ago

8 0

Answer:

T-A-A-C-G-A or just TAACGA

Explanation:

A=T

G=C

C=G

T=A

This is the answer key to all complementary <em>DNA</em> strands.

Hope this helps you out.

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Identify the term that matches each electrochemistry definition.

anygoal [31]

Answer: a. Cathode

b. Galvanic cell

c. Anode

d. Electrolytic cell

e. half reaction

Explanation:

Galvanic cell or Electrochemical cell is defined as a device which is used for the conversion of the chemical energy produced in a spontaneous redox reaction into the electrical energy.

Electrolytic cell is a device where electrical energy is used to drive a non spontaneous chemical reaction.

In the electrochemical cell, the oxidation occurs at an anode which is a negative electrode and the reduction occurs at the cathode which is a positive electrode. Thus the electrons are produced at anode and travel towards cathode.

The balanced two-half reactions will be:

Oxidation half reaction : $M\rightarrow M^{n+}+ne^-$

Reduction half reaction : $N^{n+}+ne^-\rightarrow N$

Thus the overall reaction will be: $M+N^{n+}\rghtarrow M^{n+}+N$

4 0

3 years ago

.35 grams of sodium chloride are dissolved to make 150 milliliters of solution. What is the molarity of the solution?

wariber [46]

NaCl molar mass 58.4 g/mol

moles of NaCl = .35 g * 1 mol/58.4 g = 0.005993 mol
volume of solution = 150 mL = 0.15 L

molarity = mol/vol(in L)
[NaCl] = 0.005933mol/0.15L = 0.03995 M = 0.040 M

6 0

3 years ago

The formula for acetic acid is CH3COOH. Seana wants to know how many oxygen atoms are in 0.12 moles of acetic acid. O a. 1x 10^2

MA_775_DIABLO [31]

Answer:

c. 1.4 x 10²³ oxygen atoms

Explanation:

The number of oxygen atoms in one molecule of CH₃COOH is 2.

Avogadro's constant relates the number of molecules in one mole:

6.022 × 10²³ mol⁻¹

Thus, the number of oxygen atoms in one molecule of acetic acid can be converted to the number of oxygen atoms in one mole of acetic acid:

(2 oxygen atoms / molecule)(6.022 × 10²³ molecule / mol) = 1.204 x 10²⁴ atoms per mole

Finally, the number of oxygen atoms in 0.12 moles of acetic acid are calculated:

(1.204 x 10²⁴ atoms / mol)(0.12 mol) = 1.4 x 10²³ atoms/mol

6 0

3 years ago

In humans, glucose may be the product of chemical digestion when what kinds of foods are eaten? A) carbohydrates like bread B) f

forsale [732]

<h3>Answer:</h3>

Carbohydrates like bread

<h3>Explanation:</h3>

Chemical digestion involves the breakdown of food molecules by the use of enzymes to generate simpler molecules that can be absorbed into the body's metabolism.
During chemical digestion, carbohydrates are broken down into simple molecules such as glucose which can be easily absorbed in the small intestines.
Monosaccharides such as glucose are the building blocks of carbohydrates and can be easily absorbed by the body through the small intestines.
Proteins are broken down into amino acids while lipids are broken down into fatty acid and glycerol during chemical digestion.

4 0

4 years ago

This table has information about the heat of fusion and the heat of vaporization of different substances. A 3-column table with

blagie [28]

H₂S

<h3>Further explanation</h3>

Given

ΔH fusion and ΔH vaporization of different substances

Required

The substance absorbs 58.16 kJ of energy when 3.11 mol vaporizes

Solution

We can use the formula :

$\tt \Delta H=\dfrac{Q}{n}$

Q=heat/energy absorbed

n = moles

The heat absorbed : 58.16 kJ

moles = 3.11

so ΔH vaporization :

$\tt \Delta H_{vap}=\dfrac{58.16~kJ}{3.11~mol}\\\\\Delta H_{vap}=18.7~kJ/mol$

The correct substance which has ΔH vaporization = 18.7 kj / mol is H₂S

(H₂S from the data above has ΔH fusion = 2.37 kj / mol and ΔH vaporization = 18.7 kj / mol)

3 0

3 years ago

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