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Whitepunk [10]
3 years ago
7

.ASAPPP

Chemistry
1 answer:
kati45 [8]3 years ago
5 0

Answer:

b

Explanation:

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A hot piece of copper was dropped into 155 g of water at 23.6 °C and 2,100 J of energy was transferred to the water. What is the
BlackZzzverrR [31]

Answer:

26.8 °C

Explanation:

Step 1: Given and required data

  • Mass of water (m): 155 g
  • Energy transferred to the water (Q): 2100 J
  • Initial temperature of the water (T₂): 23.6 °C
  • Final temperature of the water (T₁): ?
  • Specific heat of water (c): 4.184 J/g.°C

Step 2: Calculate the final temperature of the water

We will use the following expression.

Q = c × m × (T₂ - T₁)

T₂ = 2100 J/(4.184 J/g.°C) × 155 g + 23.6 °C = 26.8 °C

5 0
3 years ago
A reversible reaction is a reaction that takes place in the____1____ . If the reaction were to_____2____, the rate of the forwar
klemol [59]

Answer : The correct option for blank 1 is, Forward and Backward direction .

The correct option for blank 2 is, Reach equilibrium .

Explanation :

  • Reversible reaction : It is a reaction in which two or more reactants react together to give products and these products react with other product to form reactants.

It occurs in both the directions at the same time, forward and backward direction.

  • Irreversible reaction : It is a reaction in which reactants react together to give a product but it can not revert back into the reactants.

It occurs in forward direction only.

  • Equilibrium reaction : It is a reaction in which the rate of forward reaction is equal to the rate of backward reaction.
  • Completion reaction : It is a reaction in which the reactants react together to give products. when the reaction goes to completion theta means all the reactants are used up and you have only products in the reaction.
8 0
4 years ago
Silver has a density of 10.5g/cm to the 3rd and gold has density of 9.3g/cm to the 3rd. Which would have a greater mass, 5cm to
Akimi4 [234]
The density of gold is 19.3 g/cm³

Ag= silver
Au= gold.
density (Ag)=10.5 g/cm³.
density (Au)=19.3 g/cm³

We have to calculate the mass of 5 cm³ silver:

10.5 g---------------------1 cm³
x---------------------------  5 cm³

x=(10.5 g  * 5 cm³) / 1cm³ ≈52.5 g

And we have to calculate the mass of 5 g gold.

19.3 g------------------------1 cm³
x-------------------------------5 cm³

x=(19.3 g * 5 cm³) / 1cm³≈96.5  g

Then 5 cm³ silver are 52.5 g of mass, and 5 cm³ gold are 96.5 g of mass, therefore,  gold would have a greater mass than silver.

answer:5 cm³ gold would have a greater mass than 5 cm³ silver.
3 0
4 years ago
Why is it necessary to know the temperature of the reactants and the products of a reaction in order to determine change in the
Crank

Answer:

Free Energy (G) can either increase or decrease for a reaction when the temperature increases. It depends on the entropy (S) change. The change in a quantity is represented by the Greek letter delta. ... Hence, when the temperature increases the numeric value of the free energy becomes larger.

Explanation:

6 0
3 years ago
Which Video game do you like the most?
Jobisdone [24]

minecraft or cod

Explanation:

well those are the only games I play but the one I enjoy the most is cod

6 0
3 years ago
Read 2 more answers
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