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Kitty [74]
2 years ago
13

MtDNA is individual evidence. True False

Chemistry
1 answer:
USPshnik [31]2 years ago
6 0

Answer:

the correct answer false

Explanation:

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The general formula for an amino acid is
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<span>The general formula of an amino acid is R-CH(NH2)-</span>
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Select the name of the period 4 transition element that forms a 3+ diamagnetic ion.
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The answer is Scandium
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How many moles of CO2 are produced from the combustion of 5.25 moles of CH3OH?
iVinArrow [24]

First, we write the reaction for CH3OH combustion

CH3OH+3/2O2--->CO2+2H2O

for 1 mole of methanol, we get 1 mole of CO2, therefore for 5,25 moles of methanol we will get 5,25 moles of CO2

4 0
3 years ago
Pb(NO3)2<br> how do i solve this
Sindrei [870]

You can see the periodic table one by one.

Pb(NO3)2 = PbN2O6

So there are

1Pb

2N

6O

and so you find the molecular mass from the periodic table and add all the numbers

Molacular mass of

Pb = 207

N = 14

O = 16

multiply it with the number of atoms

1Pb = 207 × 1 = 207

2N = 14 × 2 = 28

6O = 16 × 6 = 96

Molecular mass total = 207 + 28 + 96 = <u>3</u><u>3</u><u>1</u>

So the molecular mass is 331.

4 0
3 years ago
Determine the mass of grams of led(II) sulfate that will dissolve in 2.50 x 10^2 ml water. Ksp= 1.8 x 10^-8
ki77a [65]

Answer:

9.86*10^(-3) g

Explanation:

PbSO4 ----> Pb^(2+) + SO4^(2-)

                     s               s

Ksp = s²

s =√Ksp = √(1.8*10^-8) = 1.3*10^(-4) mol/L

The molar solubility PbSO4 = 1.3*10^(-4) mol/L.

2.50 *10^2 mL *1L/10³mL =0.250L

1.3*10^(-4)mol/L *0.250L*303.3 g/mol = 9.86*10^(-3) g

7 0
3 years ago
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