A sample of an element is malleable and can conduct electricity. This element could be(1) H (3) S
(2) He (4) Sn
Answers
Answer is: 4) Sn.
Tin (Sn) is only metal in this question and metals are malleable and can conduct electricity.
Metals have metallic bond.
1. Metallic bond is a type of chemical bond.
2. Metallic bond is formed between electrons and positively charged metal ions.
3. Metallic radius is defined as one-half of the distance between the two adjacent metal ions.
4. Metallic bond increace electrical and thermal conductivity.
5. Metals conduct heat, because when free moving electrons gain energy (heat) they vibrate more quickly and can move around.
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Answers
Answer : The temperature will be, 392.462 K
Explanation :
According to the Arrhenius equation,
or,
where,
= rate constant at
=
= rate constant at
=
= activation energy for the reaction = 66.41 kJ/mole = 66410 J/mole
R = gas constant = 8.314 J/mole.K
= initial temperature = 293 K
= final temperature = ?
Now put all the given values in this formula, we get:
Therefore, the temperature will be, 392.462 K
Compare the electrical conductivity of the aqueous product in the reaction to the electrical conductivity of the white solid that remains after the water is evaporated from the solution.
Write the chemical name of the base produced in the reaction.
State one change in reaction conditions that will increase the rate of the reaction.
Answers
Answer:
- Calcium is more conductive than calcium hydroxide.
- Calcium hydroxide.
- Addition of more either calcium or water to the reaction vessel
Explanation:
Hello,
In this case, based on the given reaction and information, calcium's electrical conductivity 0.298 106/(cm*Ω) which is a relatively high value compared to it its base has due to its large insolubility.
In addition, the name of the formed base is calcium hydroxide based on the IUPAC rules.
Moreover, the addition of more either calcium or water to the reaction vessel will generate more calcium hydroxide.
Best regards.
Answers
Answer: If you have a crush on someone, it can be difficult to decide whether to express your feelings or not. There are no hard and fast rules, but here are some things to consider:
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I hope this helps! Let me know if there’s anything else I can do for you.
Answer: Ask them
Explanation:
If you miss your chance you might regret it.
o helium (He)
o hydrogen (H)
sodium (Na)
O argon (Ar)
Answers
Answer: helium(He)
Explanation: Helium has only 2 electrons in the outermost energy level, but all of the other elements in its column have eight.
Help
Answers
Answer:
Thermohaline Circulation
Explanation:
The process is known as “Thermohaline Circulation”. In the Earth’s polar regions ocean water gets very cold, forming sea ice. As a consequence the surrounding seawater gets saltier, because when sea ice forms, the salt is left behind. As the seawater gets saltier, its density increases, and it starts to sink.
Answers
mass moles divided by smallest moles
C 32g 32/12 = 2.67 1
H 8g 8/1.01 = 7.92 approx. 3
Next, divide both terms by the smallest number of moles, 2.67. This gives 1 and 3. So the empirical formula is CH3 which has a molar mass of 15g/mol. Given the molar mass of the molecular formula as 30g/mole, we can calculate the factor by which to multiply the subscripts of CH3.
X = molar mass of molecular formula / molar mass of empirical formula = 30/15
X=2
So (CH3)2 is C2H6.
Answer:
the answer is D on edge 2021
Explanation: