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Musya8 [376]
3 years ago
7

What is 0.00 degrees Kelvin known as

Chemistry
1 answer:
vodka [1.7K]3 years ago
4 0
-273.15 degrees celsius
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Vegetable oil has a specific heat of 1.67/* Calculate the heat required (in kilojoules) to raise the temperature of 500 g of
Nady [450]

Answer:

Q=108.55kJ

Explanation:

Hello,

In this case, we can compute the required heat by using the following equation:

Q=mCp(T_2-T_1)

Thus, by considering the given mass, specific heat and both initial and final temperature, we obtain:

Q=500g*1.67\frac{J}{g\°C} *(150.0\°C-20.0\°C)*\frac{1kJ}{1000J} \\\\Q=108.55kJ

Regards.

5 0
3 years ago
Please help me, I’m stuck on this question
zubka84 [21]

Answer:

\large \boxed{\text{0.0820 L$\cdot$atm$\cdot$K$^{-1}$mol}^{-1 }}

Explanation:

To solve this problem, we can use the Ideal Gas Law:

pV = nRT

Data:

p = 3.00 atm

V = 17.4 L

n = 2.00 mol

T = 45 °C

Calculations:

1. Convert the temperature to kelvins

T = (45 + 273.15) K = 318.15 K

2. Calculate the value of R

\begin{array}{rcl}pV & = & nRT\\\text{3.00 atm} \times \text{17.4 L} & = & \text{2.00 mol} \times R \times \text{318.15 K}\\\text{52.2 L$\cdot$atm} & = & 636.30R \text{ K$\cdot$mol}\\R & = & \dfrac{\text{52.2 L$\cdot$atm}}{636.30 \text{ K$\cdot$mol}}\\\\ & = & \textbf{0.0820 L$\cdot$atm$\cdot$K$^{-1}$mol}^{-1} \\\end{array}\\\text{The value of the gas constant R is $\large \boxed{\textbf{0.0820 L$\cdot$atm$\cdot$K$^{-1}$mol}^{-1 }}$}

7 0
3 years ago
According to the rules of significant figures, the number of digits that are estimated in a measurement is:
svetoff [14.1K]
The answer is A. one


8 0
3 years ago
Read 2 more answers
Which pair of liquids would you expect to be immiscible? 1. chcl3 and ccl4 2. ch3oh and h2o 3. c6h14 and h2o 4. c6h6 and c7h8 5.
Marina CMI [18]
Answer is Option-3:
                               <span>C</span>₆H₁₄ (Hexane)<span> and H</span>₂O are immiscible.

Explanation:
                   Hexane is a chain of six carbon atoms attached to each other in straight chain and hydrogen atoms. All the bonds in this compound are non-polar. Hexane molecules interact with each other through London Dispersion Forces.
                  While, Water molecules are polar in nature, due to electronegativity difference between Oxygen and Hydrogen atoms the Hydrogen atom is partially positive and Oxygen atom is partially negative. And water molecles interact with each other through hydrogen bonding.

 Result:
                As we know LIKE DISSOLVES LIKE, so both Hexane and water are different from each other, so when mixed together thay fail to develop interactions with each other, Hence immiscible in each other.
4 0
3 years ago
15. Of the alkaline earth metals which one<br> a. has the largest atomic radius
Fittoniya [83]

Answer:

barium at 217

Explanation:

4 0
3 years ago
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