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2 years ago

What does a cell use for genetic material?

Chemistry

2 answers:

AysviL [449]2 years ago

8 0

Answer:

Molecular genetics emerged from the realization that DNA and RNA constitute the genetic material of all living organisms. (1) DNA, located in the cell nucleus, is made up of nucleotides that contain the bases adenine (A), thymine (T), guanine (G), and cytosine (C).

hoa [83]2 years ago

5 0

DNA and rna!!!!! Hope it helps

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A mixture of CrBr3 and inert material is analyzed to determine the Cr content. First the mixture is dissolved in water. Then all

Masteriza [31]

Answer:

Mass% Cr = 85.5%

Explanation:

Given:

Mass of CrBr3 sample = 0.8409 g

Mass of the AgBr precipitate = 1.0638 g

To determine:

The mass percent of Cr in the sample

Calculation:

The reaction of CrBr3 with silver nitrate results in the precipitation of the bromide ion as silver chloride (AgBr) and Cr as soluble Cr(NO3)2

CrBr3(aq) + 3AgNO3(aq)→ 3AgBr(s) + Cr(NO3)3(aq)

Molecular weight of AgBr =187.77 g/mol

Moles of AgBr precipitated is:

$Moles(AgBr)=\frac{Mass(AgBr)}{Mol.wt(AgBr)}=\frac{0.8409g}{187.77g/mol}=0.004478moles$

Since 1 mole of AgBr contains 1 mole of Cl, therefore:

# moles of Cl = 0.004478 moles

At wt of Cl = 35.45 g/mol

$Mass(Chloride)=moles*at.wt = .004478moles*34.45g/mol=0.1543$

$Mass%(chloride)=\frac{mass(chloride)}{mass(sample)}*100=\frac{0.1543}{1.0638}*100 = 14.50%$

Mass%(Cr) = 100 - 14.50=85.5%

5 0

2 years ago

ANSWER ASAPP What is a compound?

MatroZZZ [7]

Answer:

a compound is a substance that contains atoms of two or more chemical elements held together by chemical bonds. any combination of two or more parts, aspects, etc. a word formed from two existing words or combining forms.

Explanation:

a substance that contains atoms of two or more chemical elements held together by chemical bonds. any combination of two or more parts, aspects, etc. a word formed from two existing words or combining forms.

7 0

3 years ago

Read 2 more answers

Explain why chlorine has a relative mass of 35.5?

Sedaia [141]

Answer: because of isotopes

relative atomic mass =(75/100 × 35) + (25/100 × 37) = 35.5

isotopes of any element behave the same chemically because neutrons do not have any charge

Explanation:

plz mark brainliest if helps

4 0

2 years ago