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skad [1K]
3 years ago
11

In a short paragraph, explain one thing you've learned from the course this year.

Chemistry
1 answer:
exis [7]3 years ago
7 0

Answer:

ive learned about the chart , ive learned about the coolest chemicle reactions and how. the can change colors , ive also learned that chenistrey is all around us since the beginning of life ,and how liquid can turn solid

Explanation:

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Calculate the kilojoules needed to heat 231 g of gold from 18 ∘C to 195 ∘C.
LuckyWell [14K]

5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.

We have 231 g of gold at 18 °C and supply it with heat to increase its temperature to 195 °C. We can calculate the amount of heat required using the following expression.

Q = c \times m \times \Delta T

where,

  • Q: heat
  • <em>c: specific heat capacity of gold</em> (0.129 J/g.°C)
  • m: mass
  • ΔT: change in the temperature

Q = \frac{0.129 J}{g.\° C}  \times 231 g \times (195 \° C - 18 \° C) = 5.27 \times 10^{3} J = 5.27 kJ

5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.

You can learn more about heating here: brainly.com/question/1105305

8 0
2 years ago
Why do solids maintain their volume and shape? cause-effect
SpyIntel [72]

B.)because they are packet tight

3 0
3 years ago
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When does an object move<br><br>​
natulia [17]

Answer:

When a force pushes or pulls the object, the object will move in the direction of the force. The bigger the force, and the lighter the object, the greater the acceleration. It can also make something slow down, speed up or change direction.

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5 0
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Gold (Au) is considered a(n)<br><br><br> Compound<br><br> Potatoes<br><br> Mixture<br><br> Element
strojnjashka [21]

Answer:

Element

Explanation:

The symbol for gold is Au which only has one capital letter. This means that there is only one thing that makes up gold which would make it an element.

hope this helps :)

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