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Dimas [21]
3 years ago
7

If a dog has a mass of 21.5kg, what is his mass in the following units?

Chemistry
1 answer:
PolarNik [594]3 years ago
5 0

Answer: 21.5kg in grams is 21,500 grams

21.5kg in mg is 215,000,00

Explanation:

You might be interested in
Cl2 + 2KBr - Br2 + 2KCI
marishachu [46]
The molar mass of potassium chloride is 74.5513g/mol, and the molar mass of potassium bromide is 119.002g/mol. You first need to find how many moles are in the given sample, so you divide the mass by the molar mass of potassium bromide. You don’t necessarily need to convert the mole ratio, since both the potassium chloride and potassium bromide have 2 moles in the chemical equation. Lastly, you multiply the moles at this point by the molar mass of potassium chloride, and you get your final answer.

Answer: 222.91g KCl

7 0
3 years ago
A perfect cube of aluminium metal was found to weigh 20.00g ,the density of the aluminium is 2.70g/ml ,what are the dimensions o
steposvetlana [31]

Answer:

1.95cm x 1.95cm x 1.95cm

Explanation:

20.00g / 2.70g/mL = 7.41 mL = 7.41 cm^3

∛7.41 = 1.95cm

5 0
3 years ago
Calculate the temperature at
tigry1 [53]

Answer:

Option D. 1191.49 K

Explanation:

The following data were obtained from the question:

Change in enthalphy (ΔH) = 280 kJ/mol

Change in entropy (ΔS) = +235 J/Kmol

Temperature (T) =...?

Next, we shall express the enthalphy in joule (J). This is illustrated below:

1 KJ/mol = 1000 J/mol

Therefore, 280 kJ/mol = 280 x 1000 = 280000 J/mol

Therefore, 280 KJ/mol is equivalent to 280000 J/mol

Now, we can obtain the temperature at which the reaction was feasible as follow:

ΔS = ΔH/T

235 = 280000/ T

Cross multiply

235 x T = 280000

Divide both side by 235

T = 280000/235

T = 1191.49 K

Therefore, the temperature at which the reaction was feasible is 1191.49 K

7 0
3 years ago
What does the slope of a distance versus time graph represent?
astra-53 [7]

Answer:

Speed

Explanation:

Motion can be represented by a distance-time graph, which plots distance on the y-axis and time on the x-axis. The slope of a distance-time graph represents speed. The steeper the slope is, the faster the speed.

Hope this helps!:)

6 0
3 years ago
Consider the chemical equation. 2h2 + o2 2h2o what is the percent yield of h2o if 87.0 g of h2o is produced by combining 95.0 g
Kruka [31]
The correct answer is letter C 88.5% 

3 0
3 years ago
Read 2 more answers
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