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aksik [14]
4 years ago
11

Which causes genetic variations and can result in different alleles

Chemistry
1 answer:
viktelen [127]4 years ago
3 0
Genetic variation can be caused by mutation
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When it comes into contact with It will turn purple
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The four structures that both prokaryotic and eukaryotic cells have are
umka21 [38]

Hello! Greetings from Turkey! :)

<em>* Cell membrane</em>

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8 0
3 years ago
Na2CO3 + 2HCl ---------&gt; 2NaCl + CO2 + H2O How many moles of NaCl are produced from the reaction of 1.67 x 1022 molecules of
dexar [7]

Answer:

0.0554 moles of NaCl are produced from the reaction of 1.67*10²² molecules of Na₂CO₃ with excess HCl.

Explanation:

The balanced reaction is:

Na₂CO₃ + 2 HCl → 2 NaCl + CO₂ + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

  • Na₂CO₃: 1 mole
  • HCl: 2 moles
  • NaCl: 2 moles
  • CO₂: 1 mole
  • H₂O: 1 mole

On the other hand, Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

In this case, you can apply the following rule of three: if 6.023*10²³ molecules of Na₂CO₃ are contained in 1 mole, 1.67*10²² molecules will be contained in how many moles?

amount of moles=\frac{1.67*10^{22}molecules*1mole }{6.023*10^{23}molecules}

amount of moles= 0.0277 moles

In this case, you can apply the following rule of three: if by stoichiometry 1 mole of Na₂CO₃ produces 2 moles of NaCl, 0.0277 moles of Na₂CO₃ will produce how many moles of NaCl?

amount of moles of NaCl=\frac{0.0277 moles of Na_{2} CO_{3}*2 moles of NaCl }{1 mole of Na_{2} CO_{3}}

amount of moles of NaCl= 0.0554 moles

<u><em>0.0554 moles of NaCl are produced from the reaction of 1.67*10²² molecules of Na₂CO₃ with excess HCl.</em></u>

8 0
3 years ago
How many molecules are there? How many elements? 5CO2
Vaselesa [24]

Answer:

No number means one atom. For CO2 there is one atom of carbon and two atoms of oxygen. For H2O, there is one atom of oxygen and two atoms of hydrogen. A molecule can be made of only one type of atom.

Explanation:

5 0
3 years ago
For the reversible reaction. A(g) = B(g). which K values would indicate that there is more B then A at equilibrium? a)K=7x10^-9.
yanalaym [24]

Answer is both (b) and (d).


<em>Explanation;</em>


Equilibrium constant is written as a ratio between concentrations of products and reactants.


The equilibrium reaction is

A(g) ⇄ B(g)


Hence, the equilibrium constant can be expressed as

K = [B(g)] / [A(g)]


If there is more B, then A should be less. Hence, K value would be more than 1.

Hence, according to the given choices, K = 4000 and K = 1 x 10⁶ can be taken as correct answers.


6 0
4 years ago
Read 2 more answers
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