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timofeeve [1]
3 years ago
12

Please help me on this question (4a)

Chemistry
1 answer:
drek231 [11]3 years ago
5 0
You have to draw the arrow going out of the coffee cup and into the environment. Since the coffee is hot, heat will ecscape in order for it to reach room temperature
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Evaluate this dimensional analysis setup. A paperclip is 3.2 cm long. How many paperclips would fit in
Alika [10]

Answer:

100 yard = 9144 centimeters

9144 / 3.2 = 2,8575 round off

= 2,858 paperclips

Explanation:

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3 years ago
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Why does ice have a different density than liquid water?
gulaghasi [49]

Answer:

because it has lighter molecules.

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Where dpes the comma go I had a dream once more like a nighmare about a zombie apocalypse?
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3 years ago
According to le chatelier's principle, what would happen if the equilibrium of a weack acid or weak base were upset
mario62 [17]
Answer: The conc. of products shall increase to nullify the effect of change in concentration. For this purpose, equilibrium would shift to right. 
<span>
Reason:
</span>
According to  Le Chatelier's principle: "If a chemical system at equilibrium experiences a change in concentration, temperature, volume, or partial pressure, then the equilibrium shifts to counteract the imposed change and a new equilibrium is established."

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6 0
3 years ago
Calculate the density of an object with a mass of 3.8 g, that when placed in a 10.0 mL graduated cylinder with an initial volume
Arturiano [62]

Answer : The density of an object is 0.93 g/mL

Explanation : Given,

Mass of an object = 3.8 g

Initial volume = 4.5 mL

Final volume = 8.6 mL

First we have to calculate the volume of an object.

Volume of an object = Final volume - Initial volume

Volume of an object = 8.6 mL - 4.5 mL

Volume of an object = 4.1 mL

Now we have to calculate the density of an object.

Formula used:

\text{Density}=\frac{\text{Mass of an object}}{\text{Volume of an object}}

Now putting all the given values in this formula, we get:

\text{Density}=\frac{3.8g}{4.1mL}

\text{Density}=0.93g/mL

Therefore, the density of an object is 0.93 g/mL

3 0
3 years ago
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