3 years ago

Elements in group 2 are all called alkaline earth metals. What is most similar about the alkaline earth metals?

Chemistry

2 answers:

Eddi Din [679]3 years ago

6 0

Answer:

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Explanation:

german3 years ago

4 0

Answer:

Explanation: the last one

You might be interested in

Condensation point and freezing point of argon in KELVIN.

vesna_86 [32]

Answer:

Condensation: 423.3 K

Freezing: 83.96 K

(this is all i could figure out :) hope it helps)

4 0

3 years ago

Have any of you guys ever got suspended because you made a stink bomb in science class?

AleksAgata [21]

Answer:

No :s

Explanation:

3 0

3 years ago

Read 2 more answers

Which best describes how isotopes of the same element differ?

Tasya [4]

It would be C!!!!!!!!!!!!!

8 0

3 years ago

You have 50 ml of a complex mixture of weak acids that contains some HF (pKa = 3.18) and some HCN (pKa = 9.21). Which is larger,

bonufazy [111]

Answer:

$\frac{[F^{-}]}{[HF]}$ is larger

Explanation:

$pK_{a}=-logK_{a}$ , where $K_{a}$ is the acid dissociation constant.

For a monoprotic acid e.g. HA, $K_{a}=\frac{[H^{+}][A^{-}]}{[HA]}$ and $\frac{[A^{-}]}{[HA]}=\frac{K_{a}}{[H^{+}]}$

So, clearly, higher the $K_{a}$ value , lower will the the $pK_{a}$

In this mixture, at equilibrium, $[H^{+}]$ will be constant.

$K_{a}$ of HF is grater than $K_{a}$ of HCN

Hence, $(\frac{F^{-}}{[HF]}=\frac{K_{a}(HF)}{[H^{+}]})>(\frac{CN^{-}}{[HCN]}=\frac{K_{a}(HCN)}{[H^{+}]})$

So, $\frac{[F^{-}]}{[HF]}$ is larger

5 0

3 years ago

Two crates, one heavy and one light, are at rest on a waxed floor. Which crate will need the greater force to give the same chan

otez555 [7]

The heavy one because mass times force is equal to speed. The lighter one has less mass to it goes faster without as much effort. I hope that helps!

4 0

3 years ago

Read 2 more answers