<span>6.50x10^3 calories.
Now we have 4 pieces of data and want a single result. The data is:
Mass: 100.0 g
Starting temperature: 25.0°C
Ending temperature: 31.5°C
Specific heat: 1.00 cal/(g*°C)
And we want a result with the unit "cal". Now you need to figure out what set of math operations will give you the desired result. Turns out this is quite simple. First, you need to remember that you can only add or subtract things that have the same units. You may multiply or divide data items with different units and the units can combine or cancel each other. So let's solve this:
Let's start with specific heat with the unit "cal/(g*°C)". The cal is what we want, but we'ld like to get rid of the "/(g*°C)" part. So let's multiply by the mass:
1.00 cal/(g*°C) * 100.0 g = 100.0 cal/°C
We now have a simpler unit of "cal/°C", so we're getting closer. Just need to cancel out the "/°C" part, which we can do with a multiplication. But we have 2 pieces of data using "°C". We can't multiply both of them, that would give us "cal*°C" which we don't want. But we need to use both pieces. And since we're interested in the temperature change, let's subtract them. So
31.5°C - 25.0°C = 6.5°C
So we have a 6.5°C change in temperature. Now let's multiply:
6.5°C * 100.0 cal/°C = 6500.0 cal
Since we only have 3 significant digits in our least precise piece of data, we need to round the result to 3 significant figures. 6500 only has 2 significant digits, and 6500. has 4. But we can use scientific notation to express the result as 6.50x10^3 which has the desired 3 digits of significance. So the result is 6.50x10^3 calories.
Just remember to pay attention to the units in the data you have. They will pretty much tell you exactly what to add, subtract, multiply, or divide.</span>
The answer is 0.0171468704904. We assume you are converting between moles Mg(OH)2 and gram. This compound is also known as Magnesium Hydroxide. 1 mole<span> is equal to </span>1 moles<span> Mg(OH)2, or 58.31968 grams.</span>
Mathematics and science are formal and exact sciences that are based on logic.
<h3>What is math and science?</h3>
Mathematics is an exact science that studies the properties and relationships between entities through geometric figures and arithmetic with numbers. Mathematics then looks for common patterns that could end up leading to a theory and, if it is verifiable and true, end up being a law, such as the Pythagorean law for example.
In terms of science, it is the comparable knowledge that has been studied, explained, and has helped predict social and natural phenomena in our universe over time. This has been done and verified through the scientific method, making it then a verifiable and true logic.
Therefore, we can confirm that mathematics and science are formal and exact sciences that are based on logic.
To learn more about science visit: brainly.com/question/12842883
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Answer:
a. C₆H₅OH(aq)
Explanation:
The reaction of phenol with water is shown below as:-
![C_6H_5OH_{(aq)}+H_2O_{(l)}\rightarrow C_6H_5O^-_{(aq)}+H_3o^+_{(aq)}](https://tex.z-dn.net/?f=C_6H_5OH_%7B%28aq%29%7D%2BH_2O_%7B%28l%29%7D%5Crightarrow%20C_6H_5O%5E-_%7B%28aq%29%7D%2BH_3o%5E%2B_%7B%28aq%29%7D)
According to Arrhenius, The specie which furnish protons in solution is known as acid. In the above reaction, phenol,
acts as an acid by contributing a H⁺ ion to create H₃O⁺ in the chemical equation.
<u>a. C₆H₅OH(aq) is the answer</u>
Answer:
c.
Explanation:
it is c.-1 because oxidation number of cl is-1