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iris [78.8K]
3 years ago
5

If your mixing cement for the foundation of a building and it calls for 1.55 tons of sand, how many grams of a sand are you usin

g? Please show your work, and report your answer with the correct number of significant figures and appropriate units.
Chemistry
1 answer:
Damm [24]3 years ago
6 0

Answer:

1406136 grams

Explanation:

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A steam engine (assume a Carnot engine ) has an efficiency of 50.8%. If the waste heat has a temperature of 72.4 ◦C, what is the
Inessa05 [86]

Answer:

The temperature of the boiler is approximately 147.1 °C

Explanation:

A Carnot engine is an ideal engine that has the highest efficiency among all the engines because the second law of thermodynamics.That efficiency \eta  is:

\eta=1-\frac{T_{c}}{T_{h}}

with T_{h} the temperature of the hot reservoir (the boiler temperature) and T_{c} the temperature of the cold reservoir (the steam temperature). Solving for T_{h}:

T_{h}=\frac{-T_{c}}{\eta-1}=\frac{-72.4}{0.508-1}\approx147.1\,C

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2 years ago
The table shows the charge on three unknown subatomic particles.
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Answer:

B. only particle Z

Explanation:

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3 years ago
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According to Dalton, atoms cannot be SELECT ALL THAT APPLY a Created b Destroyed c Subdivided d Bonded​
Sveta_85 [38]

Answer:

The answer is subdivided,created or destroyed

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2 years ago
Will mark brainliest
ikadub [295]
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a. Heterogeneous
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A heterogeneous mixture is a mixture in which you can see multiple different ingredients in, for example vegetable soup, tea with ice and lemon slices, or fruit salad.

A homogeneous mixture is a mixture in which you can only see one thing, for example tea, seawater, or milk.
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What is the Scientific<br> Method?
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I just finished a unit on Scientific Method in my science class! Anyway, it's defined in the screenshots below. Hope this helps!

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