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sveticcg [70]
3 years ago
13

Suppose 20.0 g pieces of gold and iron, both initially at 100oC, are added to different containers of water, both initially at 2

5oC. What combination leads to the highest final temperature?
Business
1 answer:
Sauron [17]3 years ago
5 0

Answer:

  • The final temperature in the container with Gold is 27.49 ⁰C
  • The final temperature in the container with Iron is  33.01  ⁰C

Therefore, the highest final temperature is obtained in the container with Iron.

Explanation:

Q = mcΔT

Where;

Q is the quantity of heat gained or lost

m is the mass of the metals or water

c is the specific heat capacity

ΔT is the change in temperature, T₂ - T₁

T₂  is the final temperature and T₁ is the initial temperature

Heat lost by metals at 100°C is equal to heat gained by water at 25°C

-Q_{metal} = Q_{water}

-Q_{Au} = Q_{H_2O} \\-Q_{Fe}  = Q_{H_2O}

Specific heat capacity of water = 4.18 J/g°C

Specific heat capacity of gold = 0.129 J/g°C

Specific heat capacity of iron  = 0.45 J/g°C

⇒For Gold

-20*0.129*(T₂ - 100) = 18*4.18 (T₂ - 25)

-2.58T₂ +258 = 75.24T₂  - 1881

77.82T₂  = 2139

T₂  = 2139/77.82

T₂ = 27.49 ⁰C

⇒For Iron

-20*0.450*(T₂ - 100) = 18*4.18 (T₂  - 25)

-9T₂  +900 = 75.24T₂ - 1881

84.24T₂ = 2781

T₂  = 2781/84.24

T₂ = 33.01  ⁰C

Therefore, the highest final temperature is obtained in the container with Iron.

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When preparing a merchandise purchases budget, the required purchases in units equals: Select one: a. budgeted unit sales + begi
miskamm [114]

Answer:

b. Budgeted unit sales - beginning merchandise inventory + desired merchandise ending inventory.

Explanation:

Since, the total purchases in units means the number of units that the company needs to buy after maintaining the necessary closing inventory to meet the budgeted sales. The total units required should therefore be equal to the total of the budgeted sales units and the units for the closing of inventory.

Also, if the opening inventory exists out of the total units required, then that number of merchandise does not need to be purchased as it already exists.

Therefore to reach the required purchase unit we need to add budgeted unit sales and desired merchandise ending inventory and deduct the beginning merchandise inventory.

So, the correct option is b.

8 0
3 years ago
A fixed asset with a five-year estimated useful life and no scrap value is sold at the end of the second year of its useful life
JulsSmile [24]

Answer:

B) A gain would be less or a loss would be greater using straight-line depreciation.

Explanation:

In straight line method of depreciation there is a fixed amount of depreciation,  and in double declining method the rate is double of straight line method,

Let us take an example,

Cost of asset = $500,000

Selling price at end of 2nd year = $300,000

Straight line depreciation = $100,000 for each year i.e. $500,000/5

Double declining method rate = ($100,000/$500,000) \times 100 \times 2 = 40%

Therefore value at end of second year

Straight line = $500,000 - ($100,000 \times 2 ) = $300,000

Double Declining method = ($500,000 -40%) - 40% = $180,000

In case of sale at $300,000

Profit shall be

Straight line = $300,000 - $300,000 = 0

Double Declining = $300,000 - $180,000 = $120,000

Now, there will be more profit in double declining that is gain is less in straight line and losses would be greater in straight line thus statement B is correct.

8 0
3 years ago
2019: Ending inventory was overstated by $30,000 while depreciation expense was overstated by $24,000. 2020: Ending inventory wa
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Answer:

$25,000

Explanation:

The computation of the adjusted balance of retained earning is shown below:

Since the depreciation expense is overstated on 2019 which decreased the earnings so it would be added

Since the  depreciation expense is understated on 2020 which increased the earnings so it would be deducted

And, the ending inventory for 2020 is understated which decreased the earning so it would be added

Therefore, the adjusted balance is

= $24,000 - $4,000 + $5,000

= $25,000

3 0
3 years ago
The standard rate of pay is $20 per direct labor hour. If the actual direct labor payroll was $117,600 for 6,000 direct labor ho
White raven [17]

Answer:

The variance is: $ 0.50 per direct labor hour.

Explanation:

Actual payroll = $117,000/6000h = $19.50 per hour

So, if we compare this value with the standard rate of pay ($20 per direct labor hour) The variance is: $20.00 - $ 19.50 = $0.50 per hour

5 0
3 years ago
If a company does not intend to expand globally, but exports some products without customizing for international markets, it sho
ra1l [238]

Answer:

yes

Explanation:

5 0
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