3 years ago

What environmental factors do aquarium designers need to consider?

Chemistry

1 answer:

wolverine [178]3 years ago

3 0

Answer:

‍♀️mmmmmmmmmmmmmmmmm

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Explanation:

because of the law of gravity

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2 years ago

A match has about 21 milligrams of red phosphorus coating the tip. How many atoms of phosphorus is this?

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Answer:

4.083 * 10^20 atoms.

Explanation:

One Mole of phosphorus contains 6.022 * 10^23 atoms (Avogadros number)'

Since 1 mole of Phosphorus has a mass of 30.974 grams, 21 milligrams has

6.022 * 10^23 * 0.021 / 30.974

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3 years ago

If you toward the right of the periodic table is it harder or easier to remove valence electrons?

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harder

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Where are atoms located? (check all that apply)*

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2 years ago

You burn a 15g jellybean to warm 50 mL of water, which increases the temperature of the water 25 °C. How many calories of heat a

Juli2301 [7.4K]

Answer:

$Q = 375\,cal$

Explanation:

The quantity of heat transfered from the jellybean to the water is:

$Q = \rho\cdot V \cdot c\cdot \Delta T$

$Q = \left(1\,\frac{g}{cm^{3}}\right)\cdot (15\,cm^{3})\cdot \left(1\,\frac{cal}{g\cdot ^{\circ} C} \right)\cdot (25\,^{\circ}C )$

$Q = 375\,cal$

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2 years ago

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