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Damm [24]
3 years ago
10

Two substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of subst

ance A is 6.27 g and its initial temperature is 20.9 ∘C . The mass of substance B is 26.1 g and its initial temperature is 52.7 ∘C. The final temperature of both substances at thermal equilibrium is 46.3 ∘C.
If the specific heat capacity of substance B is 1.17 J/(g⋅∘C), what is the specific heat capacity of substance A?
Chemistry
1 answer:
Korolek [52]3 years ago
3 0

Answer:

It would be 6.9420. Thank me later

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bogdanovich [222]

Solution :

In the process to isolate gold that has a 80 percent yield, a 3.00 g of Au is being isolated.

That is, the actual yield of Au is 3. 00 g

Therefore, we need to find the theoretical yield.

As we know,

$\text{percent yield}=\frac{\text{actual yield}}{\text{theoretical yield}} \times 100$

$\text{theoretical yield}=\frac{\text{actual yield}}{\text{present yield}} \times 100$

As actual yield = 3.00 g

    percent yield = 80 %

So, theoretical yield = $\frac{3.00}{80} \times 100$

                                  = 3.75 g

Thus he should be able to get 3.75 g which is the theoretical yield of Au.

5 0
3 years ago
Which statement describes conditions in which a mineral can form?
Alex_Xolod [135]
The answer is A. Hope this helped
8 0
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Azithromycin suspension dosing is 10 mg/kg/d and is available in 200mg/5ml doses. how many ml would a 25kg child receive daily?
bekas [8.4K]
The answer to this question is 6.25ml

To answer this question, you need to calculate the azithromycin drug doses for this patient. The calculation would be: 25kg * 10mg/kg/d= 250mg/d

Then multiply the doses with the available drug. It would be:
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4 years ago
When a rain forest is slashed and burned, the local concentration of carbon dioxide in the atmosphere increases. This is primari
tiny-mole [99]

The local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.

<h3>WHAT IS PHOTOSYNTHESIS:</h3>
  • Photosynthesis is the process whereby green plants obtain their food (glucose) using energy from sunlight.

  • Green plants in an ecosystem absorb carbon dioxide (CO2) from the atmosphere as one of the reactants of photosynthesis.

Therefore, this means that the local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.

Learn more about photosynthesis at: brainly.com/question/1388366

7 0
3 years ago
Which is an inequality?<br> A. 1 &lt;4<br> C. 2 = 1 + 1<br> O D. 3
icang [17]

Explanation:

step 1. an inequality has either a <, <=, >=, or a >.

step 2. 1 < 4 is an inequality.

step 3. the answer is A.

4 0
3 years ago
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