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OlgaM077 [116]
3 years ago
7

3. DNA replication occurs:

Chemistry
1 answer:
arlik [135]3 years ago
5 0

Answer:

b

Explanation:

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15.0 g of cream at 16.4 °C are added to an insulated cup containing 100.0 g of coffee at 86.5 °C. Calculate the equilibrium temp
Marta_Voda [28]
115 grams total

15/115= 13%

109/115= 87%

.13x 16.4= .277

.87x 86.5= 75.255

75.255+.277= 75.532 deg C
or 75.5 as 3 significant digits
7 0
3 years ago
Consider the following reaction: 2 Bi(s) + 3 Cl2(g) → 2 BiCl3(s)
Mandarinka [93]

Taking into account the reaction stoichiometry, 1.119 grams of chlorine gas are required to produce 3.32 grams of bismuth chloride is produced.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 Bi + 3 Cl₂ → 2 BiCl₃

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

  • Bi: 2 moles
  • Cl₂: 3 moles
  • BiCl₃: 2 moles

The molar mass of the compounds is:

  • Bi: 209 g/mole
  • Cl₂: 70.90 g/mole
  • BiCl₃: 315.45 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Bi: 2 moles ×209 g/mole=418  g

Cl₂: 3 moles ×70.90 g/mole= 212.7 g

BiCl₃: 2 moles ×315.45 g/mole= 630.9 g

<h3>Mass of Cl₂ required</h3>

The following rule of three can be applied: If by reaction stoichiometry 630.9 grams of BiCl₃ are formed by 212.7 grams of Cl₂, 3.32 grams of BiCl₃ are formed by how much mass of Cl₂?

mass of Cl_{2} =\frac{3.32 grams of BiCl_{3}x212.7 grams of Cl_{2} }{630.9 grams of BiCl_{3}}

<u><em>mass of Cl₂= 1.119 grams</em></u>

Finally, 1.119 grams of chlorine gas are required to produce 3.32 grams of bismuth chloride is produced.

Learn more about the reaction stoichiometry:

<u>brainly.com/question/24741074</u>

<u>brainly.com/question/24653699</u>

5 0
3 years ago
The recommended single dose for acetaminophen is 10.0 to 15.0 mg/kg of body weight for adults. Using this guideline, calculate t
marshall27 [118]

Answer:

1.041g is the maximum sigle dose for the person

Explanation:

The maximum dose for acetaminophen is 15.0mg / kg of body weight for adults

To find the maximum single dosage for a person who weighs 153lb we must convert the lb to kg (1lb = 0.4536kg):

153lb * (0.4536kg / 1lb) =<em> 69.4kg is the mass of the person</em>

<em />

As the maximum dose is 15.0mg / kg, the dose of the person is:

69.4kg * (15.0mg acetaminophen / kg) =

<h3>1041mg = 1.041g is the maximum sigle dose for the person</h3>
7 0
3 years ago
Explain, in terms of particle behavior why smoke particles cause the detector alarm to sound
Rudik [331]
Explain in terms of particle behavior why smoke particles cause the detector alarm to sound


Smoke detectors are of many types but they rely on the principle of diffusion of smoke. Diffusion is the movement of particles from a region of high concentration to a region of lower concentration. Smoke particles move in what is known as Brownian motion.
8 0
3 years ago
Read 2 more answers
Four girls share 10 cookies equally.How many cookies does each friend get
8090 [49]
10 divided by 4 = 2.5

each girl gets 2.5 cookies
7 0
4 years ago
Read 2 more answers
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