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katrin2010 [14]
3 years ago
13

hi, I have a science and biology quiz tomorrow and this is the first time. Can you guys drop some tips on how to get higher mark

s and what to avoid?? Thank you so much
Chemistry
1 answer:
Lyrx [107]3 years ago
5 0

Answer:

Plan your schedule: Now, as you know your weak areas, your agenda should be to give extra time to tackle those difficult lessons and transform them to strong ones.

Note-making is an effective method:

Solve previous years' question papers:

Understand the concepts while studying:  

Group study can help

1 – Time Management – Daily Routine.

2 – Having Good Food and Drinking More Water Will Help.

3 – Doing Meditation For 30 Min Per Will Increase Memory Power by 20%  

4 – Take A Nap & Sleep Well.  

5 – Challenge Yourself.

6 – Find Your Weakness.

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In your own words, describe the concept of specific heat capacity and the effects that it has on temperature changes. Give an ex
umka2103 [35]

Answer:

The specific heat capacity is the heat that a body or a system needs to administer so that it can increase its internal temperature.

Explanation:

The calorific capacity is measured in several units, it varies a lot between products, reactants or the same systems since each one is independent in its composition and this conditions it.

As for its mathematical calculation, it is the quotient, that is, the division between the dose of energy transferred to a body and the change in temperature that it experiences.

4 0
3 years ago
Please help! Will mark as brainliest ! how many grams of iron metal do you expect to be produced when 245 grams of an 80.5 perce
Nutka1998 [239]
That’s the answer I guess

7 0
4 years ago
Which of the following is the best conductor of electricity
Lelu [443]
Nacl aq. is the best conductor of electricity as in aques state the ions become lose or mobile which are free to move and conduct electricity.
8 0
3 years ago
Read 2 more answers
A student measured a strip of aluminum as 1.25m long. The teacher said it was actually 2.12m long. What was the student's percen
trasher [3.6K]

Answer:

41.03 %

Explanation:

Given that,

The actual length of a strip of aluminum is 2.12 m

Observed length of a strip of aluminum is 1.25 m

We need to find the student's percent error. The percentage error on any value is given by :

\%=\dfrac{\text{observed-actual}}{\text{actual}}\times 100

Putting all values, we get :

\%=\dfrac{2.12-1.25}{2.12}\times 100\\\\\%=41.03\ \%

So, the percent error of the student is 41.03 %.

4 0
3 years ago
A 12.0 g sample of a metal is heated to 90.0 ◦C. It is then dropped into 25.0 g of water. The temperature of the water rises fro
Liula [17]

Answer:

The specific heat of the metal is 0.335 J/g°C

Explanation:

<u>Step 1:</u> Data given

Mass of the metal = 12.0 grams

Initial temperature of the metal = 90.0 °C

Mass of the water = 25.0 grams

Initial temperature of water = 22.5 °C

Final temperature of water (and metal) = 25.0 °C

The specific heat of water = 4.18 J/g°C

<u>Step 2:</u> Calculate the specific heat of the metal

Qgained  = -Qlost

Qwater = -Qmetal

Q= m*c*ΔT

m(metal) *c(metal)*ΔT(metal) = -m(water)*c(water)*ΔT(water)

⇒ mass of the metal = 12.0 grams

⇒ c(metal) = TO BE DETERMINED

⇒ ΔT(metal) = T2 - T1 = 25.0 - 90.0 °C = -65.0

⇒ mass of the water = 25.0 grams

⇒ c(water) = the specific heat of water = 4.18 J/g°C

⇒ ΔT(water) = T2 - T1 = 25.0 - 22.5 = 2.5°C

12.0 * c(metal) * -65.0 = -25.0 * 4.18 * 2.5

c(metal) = 0.335 J/g°C

The specific heat of the metal is 0.335 J/g°C

6 0
3 years ago
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