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Makovka662 [10]
3 years ago
14

In Nuclear chemistry, the key requirement for a chain reaction is that...a. each event must produce more than one particle capab

le of initiating subsequent events.b. the number of beta particles emitted must be equal to or greater than the number of gamma particles emitted.c. the entropy of the system must decrease.d. the uranium hexafluoride fuel must be in its solid state.
Chemistry
1 answer:
ahrayia [7]3 years ago
5 0

Cccccccccccccccccccccccc

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An unknown metal has a mass of 86.8 g. When 5040 J of heat are added to the sample, the sample temperature changes by 64.7 ∘ C .
grandymaker [24]

Answer: The specific heat of the unknown metal is 0.897J/g^0C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed=5040 Joules

m= mass of substance = 86.8 g

c = specific heat capacity = ?

Initial temperature of the water = T_i

Final temperature of the water = T_f

Change in temperature ,\Delta T=T_f-T_i=(64.7)^0C

Putting in the values, we get:

5040=86.8\times c\times 64.7^0C

c=0.897J/g^0C

The specific heat of the unknown metal is 0.897J/g^0C

4 0
3 years ago
Find the equation of the line passing through the points (2, 1) and (5, 10).​
Vedmedyk [2.9K]

The equation : y=3x-5

<h3>Further explanation </h3>

Straight-line equations are mathematical equations that are described in the plane of cartesian coordinates

General formula

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y = mx + c

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x1, y1 = the Cartesian coordinate that is crossed by the line

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m = Δy / Δx

  • Gradient

\tt \dfrac{10-1}{5-2}=3

  • Equation

\tt y-1=3(x-2)\\\\y-1=3x-6\\\\y=3x-5

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B. 10% is the correct answer
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Should be :

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