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tia_tia [17]
3 years ago
7

Which resulted from the study of chemistry?

Chemistry
2 answers:
ivolga24 [154]3 years ago
5 0
B is the answer. I’m now sure tbh but that’s would be my guess
RoseWind [281]3 years ago
3 0
B) the understanding of earth, fire, and water as the basic components of matter
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Calcium chloride has a melting point of 772°C, and water has a boiling point of 100°C. Which statement is true for calcium chlor
nekit [7.7K]
The difference is due to the fact that calcium chloride has stronger intermolecular forces than water.
4 0
3 years ago
What is the energy change when the temperature of 14.8 grams of solid lead is decreased from 38.4 °C to 23.7 °C ?
zimovet [89]

Answer: Q= -34.6 J

Explanation: Use Q= mc∆T

c for solid lead is equal to 0.159 J/g°C

Substitute the values:

=14.8 g(0.159J/g°C)(23.7°C-38.4 °C)

= 14.8 g(0.159J/g°C) ( -14.7°C)

= -34.6 J

Cancel out the following units: g and °C so the remaining unit is in J.

8 0
3 years ago
Gold has always been a highly prized metal, widely used from the beginning of history as a store of value. It doesn\'t rust like
Alecsey [184]

Answer:

1Au(s) + 3HNO₃(aq) + 4HCl(aq) → 1HAuCl₄(aq) + 3NO₂(g) + 3H₂O(l)

The function of HCl is oxidize the gold.

Explanation:

It is possible to balance the reaction seeing each compound as a variable and take an equation for each atom, thus:

Au(s) + HNO₃(aq) + HCl(aq) → HAuCl₄(aq) + NO₂(g) + H₂O(l)

a       +       b         +      c      =        d            +    e       +    f

Au: a = d <em>(1)</em>

H: b + c = d + 2f <em>(2)</em>

N: b = e <em>(3)</em>

O: 3b = 2e + f <em>(4)</em>

Cl = c = 4d <em>(5)</em>

Assuming <em><u>a = 1</u></em>:

<em><u>1 = d</u></em> <em>(1)</em>

<u><em>c = 4</em></u> <em>(5)</em>

b + 3 = 2f <em>(2)</em>

3b = 2e + f <em>(4)</em>

As b = e:

b = f <em>(4)</em>

<em><u>f = 3</u></em>; <em><u>b = 3</u></em>; <em><u>e = 3</u></em>

Thus, balanced reaction is:

1Au(s) + 3HNO₃(aq) + 4HCl(aq) → 1HAuCl₄(aq) + 3NO₂(g) + 3H₂O(l)

<em>The function of HCl is oxidize the gold</em> that before reaction is Au⁰ and afte ris Au⁺³

I hope it helps!

4 0
3 years ago
Describe how silver and gold are different by using the word element
emmasim [6.3K]
Silver and Gold are different as their ELEMENT charateristics. To be more precise, they both have different number of protons (which is part of their ELEMENT charateristc)
6 0
3 years ago
Which substance is insoluble and floats in water? A) Ice shavings B) Wood shavings C) Salt crystals D) Sugar crystals
hjlf
Wood shavings will float
4 0
3 years ago
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