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cestrela7 [59]
3 years ago
12

A chemist is doing research to find a better way to process natural gas after it is removed from the ground. Which branch of che

mistry best describes this chemist's work?
A: organic chemistry
B: inorganic chemistry
C: biochemistry
D: physical chemistry
Chemistry
2 answers:
olasank [31]3 years ago
8 0
B: inorganic chemistry
Delvig [45]3 years ago
7 0

Answer:

The branch of chemistry that best describes the chemist´s work is organic chemestry

Explanation:

The chemist wants to improve the process for natural gas, a mix of organic compuond, mainly alcans.

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If it takes 7,529 calories of heat to warm 750.0 grams of water, what was the temperature change? The specific heat of water in
Zigmanuir [339]

Answer:

The temperature change was 10.04 °C.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system. In this way, there is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case you know:

  • Q= 7,529 calories (cal)
  • c= 1 \frac{cal}{g*C}
  • M=750 grams

Replacing:

7,529 cal= 1  \frac{cal}{g*C} *750 g* ΔT

Solving you get:

ΔT=\frac{7,529 cal}{1 \frac{cal}{g*C}*750 g }

ΔT= 10.04 °C

So, <u><em>the temperature change was 10.04 °C.</em></u>

6 0
3 years ago
Read 2 more answers
When 20 calories of heat is added to 2.0 grams of water at 15 c, the temperature of the water increases to?
Hoochie [10]
20 calories equals to 8.368 joules.
4.184 J is needed to raise 1 gram of water.(Heat capacity of water)
for 2 grams of water 8.368 joules.

So the answer is 16 c.
8 0
3 years ago
Convert 3.45 g/ml to lb/in^3
Alja [10]
<span>The answer is 

0.124639157 pounds.

I converted it. </span><span />
5 0
3 years ago
Express the following number in scientific notation: 0.000000675.
tekilochka [14]
There are 7 digits from decimal to 1st digit, and it's coming from right, so exponent will be in negative 7

In short, Your Answer would be: Option C) <span>6.75 × 10-7
</span>
Hope this helps!
6 0
4 years ago
Determine the number of HC=CH, monomeric units in one molecule of polyethylene with a molar
VladimirAG [237]

polyethylene contains HC=CH units.

mass of this is 26 gram/mol

number of such units =13500/26

3 0
4 years ago
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