All categories

3 years ago

Mathematical evidence that 1 calorie equal 4.18 joule

1 answer:

8 0

If you want to go back to the previous definition of a calorie, the amount of heat required to raise 1 gram of water by 1 degree C, you can derive that ~4.2 J/Calorie figure by unit conversions. You need to know that a Joule is measured experimentally as 4200 Joules to raise 1 kilogram of water 1 degree C.

You might be interested in

250J of heat was added to a 2 g block of metal. The temperature of the metal was increased by 139.4K. What is the specific heat

Igoryamba

It’s 4/5x-29=4 okay? Okay

8 0

3 years ago

Use the drop-down menus to identify each organic reaction as an addition, substitution, elimination, or condensation reaction. (

Bezzdna [24]

A chemical reaction involves an interaction between two or more species to yield a product.

<h3>What is a chemical reaction?</h3>

A chemical reaction involves an interaction between two or more species to yield a product.

The following is the classification of the reactions based on type;

The first reaction shown in the attachment is a condensation reaction
The second reaction is an addition reaction
The third reaction is an elimination reaction
The fourth reaction is a substitution reaction

Learn more about reaction:brainly.com/question/9524025

#SPJ1

3 0

3 years ago

When the solar system was very young, the sun was just being formed and planets had not yet been made. The solar system was most

andriy [413]

Answer:

Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. ... When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material. At the center, gravity pulled more and more material in.

Explanation:

When the solar system was very young, the sun was just being formed and planets had not yet been made. The solar system was mostly gas and dust.

in conclution its d

Planets formed from small amounts of debris that were attracted together because of gravity.

5 0

3 years ago

solution is 2.41 molal toluene (C 7H 8, 92 g/mol) in benzene (C 6H 6, 78 g/mol); i.e. consider toluene the solute, benzene the s

inn [45]

Answer : The molarity of solution is, 1.73 mole/L

Explanation :

The relation between the molarity, molality and the density of the solution is,

where,

$d=M[\frac{1}{m}+\frac{M_b}{1000}]$

d = density of solution = $0.876g/cm^3=0.876g/mL$

m = molality of solution = 2.41 mol/kg

M = molarity of solution = ?

$M_b$ = molar mass of solute (toluene) = 92 g/mole

Now put all the given values in the above formula, we get the molality of the solution.

$0.876g/ml=M\times [\frac{1}{2.41mol/kg}+\frac{92g/mole}{1000}]$

$M=1.73mol/L$

Therefore, the molarity of solution is, 1.73 mole/L

7 0

3 years ago

Which of the following best describes the main function of the nervous system?

Svetach [21]

C, because the nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.

7 0

3 years ago