What? I’m confused???????????????????????????
Answer:
If you mean Y (as in axis), than Y is the vertical line on a graph.
Answer:
The answer to your question is b. Mg is being oxidized and c. Mg is the
reducing agent.
Explanation:
Reduction is the gain of electrons
Oxidation is the loss of electrons
Reducing agent is the element that oxidizes itself and reduces another element.
Oxidizing agent is the element the reduces itself and oxidizes another element.
In this reaction:
Magnesium loses electrons so it is being oxidized and it is the reducing agent.
For this problem, let us first determine the total amount of the accumulation of the collection of coins and the total number of coins. Each penny values to 1. A dime is to 10, and a quarter would be 25. There are 15 pennies, 12 dimes, and 7 quarters. So the equation would be:
15 (1) + 12 (10) + 7 (25) = total amount
Let's solve.
15 + 120 + 175 = total amount
135 + 173 = total amount
308 = total amount
For the total number of coins, it goes like this:
15 + 12 + 7 = total number of coins
Solve
27 + 7 = total number of coins
34 = total number of coins
Since 100 pennies or 10 dimes or 4 quarters would equal to 1 dollar, the total amount would be 3 dollars and 8 cents or simply $3.08 with the total number of coins as 34.
To get percentage, simply divide 15 with the total number of coins which is 34 and multiply it by a 100. It will look like this:
(15/34) x 100 = percentage
solve
00.4411764 x 100 = percentage
44.11764% = percentage
let us round it off to the nearest hundredths
44.12% = percentage
The percentage of pennies in the collection would be 44.12%
Q = mc∆T
m = mass
c = specific heat capacity
∆T = change in temperature
Q = mass x specific heat x change in temperature
Q1 = 1 * 390 * 10 = 3900
Q2 = 1 * 4186 * 10 = 41,860
Q3 = 1 * 840 * 10 = 8,400
Add them all up to get the total energy needed to increase the temperature of the whole set by 10°C.
3900 + 41860 = 45,760
45,760 + 8,400 = 54,160
Therefore, 54,160J is needed to increase the temperature by 10°C.