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2 years ago

Which base is strong but never concentrated?

Chemistry

2 answers:

umka2103 [35]2 years ago

3 0

Answer:

A. magnesium hydroxide

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yaroslaw [1]2 years ago

3 0

Answer:

Hello there buddy I’m here too help you with your homework

Your answer is

A.magnesium hydroxide

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Have a nice day

Good luck with your homework

Explanation:

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Which statement accurately describes how electrical power and current are related

Virty [35]

Answer:

Electrical power is the product of voltage times current.

6 0

3 years ago

According to Bowen's reaction series, crystal settling should result in the magma being separated in lower layers rich in the ea

monitta

Answer:

quartz and olivine

Explanation:

According to my research on studies made by different geologists on Bowen's reaction series, it is known that crystal settling should result in the magma being separated in lower layers rich in the early-formed quartz and olivine minerals.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

6 0

4 years ago

For each of the following pairs of substances, determine which has the larger molar entropy at 298 K: (A) Br₂(l) or (B) Cl₂(g) (

irakobra [83]

Explanation:

Entropy is defined as the degree of randomness present in a substance. Therefore, more is the irregularity present in a compound more will be its molar entropy.

Hence, decreasing order to molar entropy in state of matter is as follows.

Gases > Liquids > Solids

In the first pair, we are given $Br_{2}(l)$ or $Cl_{2}(g)$ . Since, molar entropy of liquids is less than the molar entropy of gases.

Hence, $Cl_{2}(g)$ will have larger molar entropy as compared to $Br_{2}(l)$ .

In the second pair, we are given Fe(s) or Ni(s). More is the molar mass of a compound more will its molar entropy. Molar mass of Fe is 55.84 g/mol and molar mass of Ni is 58.69 g/mol.

Hence, molar entropy of Ni(s) is more than the molar entropy of Fe(s).

In the third pair, we are given $C_{2}H_{6}(g)$ or $C_{2}H_{4}(g)$ . As both the given species are gaseous in nature. So, more is the molar mass of specie more will be its molar entropy.

Molar mass of $C_{2}H_{6}(g)$ is 30.07 g/mol and molar mass of $C_{2}H_{4}(g)$ is 28.05 g/mol. Therefore, molar entropy of $C_{2}H_{6}(g)$ is more than the molar entropy of $C_{2}H_{4}(g)$ .

In the fourth pair, we are given $CCl_{4}(g)$ or $CH_{4}(g)$ . Molar mass of $CCl_{4}(g)$ is 153.82 g/mol and molar mass of $CH_{4}(g)$ is 16.04 g/mol.

Therefore, molar entropy of $CCl_{4}(g)$ is more than the molar entropy of $CH_{4}(g)$ .

In the fifth pair, we are given HgO(s) or MgO(s). Molar mass of HgO is 216.59 g/mol and molar mass of MgO is 40.30 g/mol.

Hence, molar entropy of HgO(s) is more than the molar entropy of MgO.

In the fifth pair, we are given NaCl(aq) or $MgCl_{2}(aq)$ . Molar mass of NaCl 58.44 g/mol and molar mass of $MgCl_{2}(aq)$ is 95.21 g/mol.

Hence, the molar entropy of $MgCl_{2}(aq)$ is more than the molar entropy of NaCl(aq).

5 0

3 years ago

Successive ionization energy for Cu²+

kogti [31]

Answer:

Here's what I get

Explanation:

The ionization energy (I) is the energy required to remove an electron from an atom in the gaseous phase.

You can remove electrons in succession and measure the energies required as I₁, I₂, I₃, etc.

Thus, the removal of two electrons from Cu gives you Cu²⁺.

I found the ionization energies of Cu and used them to create those of Cu²⁺ (see table and graph below).

The electron configuration of Cu²⁺ is

Cu²⁺: 1s² 2s²2p⁶ 3s²3p⁶ 3d⁹

You can remove the nine 3d electrons and then there is a sudden jump from I₉ to I₁₀ as you break into the filled [Ar] configuration.

Similarly, there is big jump from I₁₇ to I₁₈ as you break into the filled [Ne] configuration.

8 0

3 years ago

Which action is a change in state

oee [108]

C because it’s changing

8 0

3 years ago

Read 2 more answers