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Simora [160]
3 years ago
5

What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimet

er?
Chemistry
2 answers:
bekas [8.4K]3 years ago
4 0
Hmmm, I believe the answer is "Exchange of energy with the surroundings"
Margaret [11]3 years ago
3 0

Answer:

D

Explanation:

I just took the test

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30,000 J of heat are added to 23.0 kg of steel to reach a final temperature of 140
kolbaska11 [484]

The initial temperature is 137.34 °C.

<u>Explanation:</u>

As the specific heat formula says that the heat energy required is directly proportional to the mass and change in temperature of the system.

Q = mcΔT

So, here the mass m is given as 23 kg, the specific heat of steel is given as c = 490 J/kg°C and the initial temperature is required to find with the final temperature being 140 °C. Also the heat energy required is 30,000 J.

ΔT =\frac{Q}{mc}

ΔT =\frac{30000}{23 \times 490} = \frac{30000}{11270} =2.66

Since the difference in temperature is 2.66, then the initial temperature will be

Final temperature - Initial temperature = Change in temperature

140-Initial temperature = 2.66

Initial temperature = 140-2.66 = 137.34 °C

Thus, the initial temperature is 137.34 °C.

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3 years ago
Fluids that have a lower viscosity than water
Anastaziya [24]
Syrup, molasses, and honey have a lower viscosity than water

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The iupac name of this ??
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Methylhexanamine<span> and its formula is C7H17N</span>
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2 years ago
Identify h2so4(aq) as an acid or a base. write a chemical equation showing how this is an acid according to the arrhenius defini
yarga [219]
  H2SO4  is an  acid

the  chemical  equation  showing  how H2SO4  is an acid  according  to the Arrhenius  definition   is as below

H2SO4  dissociate to  give  2H^+  and  SO4^2-

that is   H2SO4  = 2H^+  +  SO4^2-

According to Arrhenius  an acid  dissociate  to give H^+  ions H2SO4 is an acid  since  it dissociate  to  give  two hydrogen ions  
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How many moles of oxygen gas are required to form 55g of carbon monoxide gas
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8.33 moles CO2 X. 25mol O2. 16mol CO2. = 13.0 moles

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3 years ago
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