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Alex Ar [27]
3 years ago
10

YO I NEED HELP!!!! APEX PLEASE

Chemistry
2 answers:
podryga [215]3 years ago
8 0
B is the correct answer for it
Sladkaya [172]3 years ago
8 0
B is the right answer
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Please help me I need this
klio [65]
It would be:
1.D
2.A
3.B
4.C

7 0
3 years ago
Please answer! I will mark you as brainlist! ​
blagie [28]

Answer:

a) no

b) no

c) yes

d) yes

Explanation:

7 0
3 years ago
The heat of a reaction may be found with the equation q=mcΔT.
sweet-ann [11.9K]

Answer:

B) -1551 kJ  

Explanation:

There are two heat flows in this question.

Heat released by engine + heat absorbed by water = 0

                   q₁                    +                      q₂                = 0

                   q₁                    +                   mCΔT            = 0

Data:

  m = 2.51 kg

  C = 3.41 J°C⁻¹g⁻¹

T_i =   23.8 °C

T_f =205     °C  

Calculations:

(a) ΔT

ΔT = 205 °C - 23.8 °C = 181.2 °C

(b) q₂

q₂ = mCΔT = 2510 g × 3.41 J·°C⁻¹g⁻¹ × 181.2 °C = 1.551× 10⁶ J = 1551 kJ

(c) q₁

q₁ + 1551 kJ = 0

q₁ = -1551 kJ

4 0
3 years ago
What is a pure substance that cannot be chemically broken down into simpler substances?
SCORPION-xisa [38]
I believe it is A compound
3 0
3 years ago
What elements make up this compound? Check all that apply.
vladimir2022 [97]
What compound are you trying to show
5 0
3 years ago
Read 2 more answers
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