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uranmaximum [27]
2 years ago
11

Which has a lower electronegativity: sodium or rubidium?

Chemistry
1 answer:
sammy [17]2 years ago
6 0

Answer:

sodium has a lower electronegativity:)

Explanation:

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Give three examples of environmental, industrial and bio-chemistry.
JulsSmile [24]

Three examples of environmental, industrial and bio-chemistry are listed below:

  • Environmental chemistry: Contamination, Atmospheric Deposition, and Soil Pollution.
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Chemistry can be defined as a branch of science which is concerned with the substances matter is composed of, their properties and reactions,

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2 years ago
2 Ag20 →4 Ag + O2 what reaction is this​
Schach [20]

Answer:

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Explanation:

hope it helps you

6 0
3 years ago
A 13.1-g sample of CaCl2 is dissolved in 104 g of water, with both substances at 24.7°C. Calculate the final temperature of the
likoan [24]

Answer:

The final temperature of the solution is 44.8 °C

Explanation:

assuming no heat loss to the surroundings, all the heat of solution (due to the dissolving process) is absorbed by the same solution and therefore:

Q dis + Q sol = 0

Using tables , can be found that the heat of solution of CaCl2 at 25°C (≈24.7 °C)  is q dis= -83.3 KJ/mol . And the molecular weight is

M = 1*40 g/mol + 2* 35.45 g/mol = 110.9 g/mol

Q dis = q dis * n  = q dis * m/M =  -83.3 KJ/mol * 13.1 g/110.9 gr/mol = -9.84 KJ

Qdis= -9.84 KJ

Also Qsol = ms * Cs * (T - Ti)

therefore

ms * Cs * (T - Ti) + Qdis = 0

T=  Ti - Qdis * (ms * Cs )^-1   =24.7 °C - (-9.84 KJ/mol)/[(104 g + 13.1 g)* 4.18 J/g°C] *1000 J/KJ

T= 44.8 °C

7 0
3 years ago
collect some of chalk, limestone, marble, eggshells and seashells and mix them with a dilute acid. pass the gas produced into a
Liula [17]

Explanation:

Yes carbon dioxide found in each case

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2 years ago
Which of the following pairs of elements will form covalent bonds with each other? PLEASE HELP
Oksana_A [137]
<h3><em><u>Answer: Your correct answer is A, because potassuim and bromine form covalent bonds with each other, Also check out nile red he made bromine in his dads garage!-Have a nice day :)</u></em></h3>

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