All categories

3 years ago

What structure is found in some but not all plant cells

Chemistry

2 answers:

lilavasa [31]3 years ago

7 0

Answer: central vacuole, cell wall, chloroplasts.

Explanation:

Many animals and plants don’t have these structures.

AlekseyPX3 years ago

5 0

The chloroplasts i believe is the answer

You might be interested in

How many valence electron do silver have

Gnesinka [82]

Silver has only 1 valence electron.

The electron configuration of Silver gives one outer shell electron, basically a valence electron.

5 0

3 years ago

Read 2 more answers

Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II) ions. In the plating reaction, coppe

Aloiza [94]

Hey there!:

Copper plating on Zinc will occur via this simple reaction:

Cu²⁺ + 2 e⁻ ⇌ Cu

When a species gains electron, it is reduced. Its oxidation state is decreased. For example, in the above reaction Cu2+ gained 2 electron to get reduced to Cu. Its oxidation state changed from +2 to 0. Hence it is a reduction reaction.

So, the correct answer is :

The copper II ions gain two electrons and are reduced.

Answer B

Hope this helps!

8 0

3 years ago

Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each:

Sladkaya [172]

Answer:

Part A:

Charge is $P^{3-}$

Configuration is $1s^2 2s^22p^63s^23p^6$

Part B:

Charge is $Mg^{2+}$

Configuration is $1s^2 2s^22p^6$

Part C:

Charge is $Se^{2-}$

Configuration is $1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

Explanation:

Monatomic ions:

These ions consist of only one atom. If they have more than one atom then they are poly atomic ions.

Examples of Mono Atomic ions: $Na^+, Cl^-, Ca^2^+$

Part A:

For P:

Phosphorous (P) has 15 electrons so it require 3 more electrons to stabilize itself.

Charge is $P^{3-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^6$

Part B:

For Mg:

Magnesium (Mg) has 12 electrons so it requires 2 electrons to lose to achieve stable configuration.

Charge is $Mg^{2+}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^6$

Part C:

For Se:

Selenium (Se) has 34 electrons and requires two electrons to be stable.

Charge is $Se^{2-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

8 0

3 years ago

Entropy is greater at higher trophic levels than at lower levels.. True of False

loris [4]

Answer: True

It is true that entropy is greater at higher trophic levels compared to the lower levels. The amount of energy and entropy in a certain food chain varies between trophic level. It specifically increases from one trophic level to another.

8 0

3 years ago

Read 2 more answers

If you had .0451 moles of CaCl2, how many grams would you have?

Montano1993 [528]

Answer:

option C

Explanation:

because i took the test

8 0

2 years ago