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Verizon [17]
3 years ago
15

The diagram below represents reaction of reactant A and reactant B combining to form product C.

Chemistry
1 answer:
OleMash [197]3 years ago
7 0

Answer:B

Explanation:

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A 51.9g sample of iron, which has a specific heat capacity of 0.449·J·g?1°C?1, is put into a calorimeter (see sketch at right) t
Ghella [55]

Answer:

the initial temperature of the iron sample is Ti = 90,36 °C

Explanation:

Assuming the calorimeter has no heat loss to the surroundings:

Q w + Q iron = 0

Also when the T stops changing means an equilibrium has been reached and therefore, in that moment, the temperature of the water is the same that the iron ( final temperature of water= final temperature of iron = T )  

Assuming Q= m*c*( T- Tir)  

mc*cc*(T-Tc)+mir*cir*(T - Tir) = 0

 Tir = 20.3 °C + 300 g * 4.186 J/g°C * (20.3 C - 19 °C) / ( 51.9 g * 0.449 J/g°C )

 Tir = 90.36 °C

Note :

- The specific heat capacity of water is assumed 1 cal/g°C = 4.186 J/g°C  

- We assume no reaction between iron and water

7 0
3 years ago
The superheated water vapor is at 15 MPa and 350°C. The gas constant, the critical pressure, and the critical temperature of wat
Vesnalui [34]

Answer:

0.01917 m^3/kg.

Explanation:

Given:

P = 15 MPa

= 1.5 × 10^4 kPa

T = 350 °C

= 350 + 273

= 623 K

Molar mass of water, m = (2 × 1) + 16

= 18 g/mol

= 0.018 kg/mol

R = 0.4615 kPa·m3/kg·K

Using ideal gas equation,

P × V = n × R × T

But n = mass/molar mass

V = (R × T)/P

V/M = (R × T)/P × m

= (0.4615 × 623)/1.5 × 10^4

= 0.01917 m^3/kg.

4 0
3 years ago
What neutral element has 17 electrons an 18 neutrons?
pishuonlain [190]

Answer:

chlorine atom

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

Explanation:

4 0
2 years ago
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Which material has carbon atoms interspersed with iron atoms in its molecular structure?
gogolik [260]

Answer:

steel should be correct

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2 years ago
How to make non-sticky slime without borax / plz help will mark as brainliest
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In a bowl, combine 1/4 cup of while glue and 1 tablespoon of liquid laundry detergent. Stir to combine, then wait a few minutes for it to turn gooey<span>. If you want to </span>make<span> colored </span>slime<span>, stir in a few drops of food coloring into the glue before you add the detergent.</span>
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3 years ago
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