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vlada-n [284]
3 years ago
6

Round off 1.732 kg to three significant figures. Express your answer with the appropriate units, Value and Units.

Chemistry
1 answer:
butalik [34]3 years ago
8 0

Answer:

1.73 \: kg \\ to \: 3 \: sf

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Negative ions have ______ (More or Less) protons than electrons.
Anuta_ua [19.1K]

Answer:

Less

Explanation: I took the test.

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Assign oxidation numbers to the element in each of the following compounds. Remember an oxidation number is for one atom of the
worty [1.4K]

Answer:

a.  x = + 2

b.  x = + 3

c.  x = + 2

d.  x = + 3

Explanation:

The oxidation number is a formal charge assigned to an atom present in a molecule or formula unit or ion based on some arbitrary rules.

a.

<u>Hg</u>O

The oxidation number of Hg in HgO is:

x + (-2) = 0

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b.

<u>Al₄</u>C₃

The oxidation number of Al in Al<u>₄</u>C₃ is:

4x +(3 × -4) = 0

4x - 12 = 0

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x = +3

c. CrF₂

x + ( 2 × - 1) = 0

x - 2 = 0

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2x + (-6) = 0

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x = 6/2

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7 0
3 years ago
Consider the following reaction NHAHS(s)NH3(g) + H2S(g) If a flask maintained at 302 K contains 0.196 moles of NH4HS(s) in equil
quester [9]

Answer:

Kc = 3.72 × 10⁶

Explanation:

Let's consider the following reaction:

NH₄HS(g) ⇄ NH₃(g) + H₂S(g)

At equilibrium, we have the following concentrations:

[NH₄HS] = 0.196 M (assuming a 1 L flask)

[NH₃] = 9.56 × 10² M

[H₂S] = 7.62 × 10² M

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Kc=\frac{[NH_{3}] \times [H_{2}S] }{[NH_{4}HS]} =\frac{9.56 \times 10^{2}  \times 7.62  \times 10^{2}}{0.196} =3.72 \times 10^{6}

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3 years ago
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3 years ago
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How is kinetic energy of particles and temperature related
Rufina [12.5K]

Answer:

The higher the temperature, the faster the particles move, the lower the temperature, the slower.

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