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Vladimir79 [104]
3 years ago
9

Which question should you ask to find out the length of a planet's year?

Chemistry
1 answer:
maks197457 [2]3 years ago
6 0
How long does it take for the planet to revolve around the sun?
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Which term is used to describe a group of arctic foxes that live in part of Alaska’s Arctic National Wildlife Refuge?
Allushta [10]

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The best answer would be biome

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4 years ago
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Why is the weight of an object more on Earth than on the Moon?
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⭐️The answer is ⭐️


As weight = mass × g so we have more weights on earth than on moon. Explanation: This is because gravitational force is immediately proportional to the mass of an object. Greater the mass, greater will be the gravitational force exerted by it and thus, more will be our weight
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3 years ago
If a 0.4681 g Mg strip reacts with 0.650 M HCl in a 139.3 mL flask at 25oC, what is the minimum volume (mL) of HCl needed to com
Marizza181 [45]
The reaction between the magnesium, Mg, and the hydrochloric acid, HCl is given in the equation below,

    Mg + 2HCl --> H2 + MgCl2

The number of moles of HCl that is needed for the reaction is calculated below.
    n = (0.4681 g Mg)(1 mol Mg/24.305 g Mg)(2 mol HCl/1 mol Mg)
    n = 0.0385 mols HCl

From the given concentration, we calculate for the required volume. 
    V = 0.0385 mols HCl/(0.650 mols/L)
     V = 0.05926 L or 59.26 mL

<em>Answer: 59.26 mL of HCl</em>
7 0
3 years ago
Calculate the answer. Express it in scientific notation. All answers should have the correct number of significant figures.
artcher [175]
To express the answer of (6.93 x 10¹) (2.0 x 10-4) in scientific notation, it should be 1.4 x 10^-2. <span>To </span>multiply<span> two numbers expressed in </span>scientific notation<span>, simply </span>multiply<span> the numbers out front and add the exponents. I hope it helps. </span>
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3 years ago
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Gravitational, elastic, and chemical are three forms of
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Gravitational, elastic, and chemical are three forms of potential energy.
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4 years ago
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