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Contact [7]
2 years ago
13

A trait that is helpful to a species will become more common in that

Chemistry
1 answer:
Ber [7]2 years ago
8 0
B is the right answer
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Which ion in the ground state has the same electron configuration as an atom of neon in the ground state?
Ainat [17]
  • Cl-

Lets see how

  • Z for Cl is 9
  • One electron is added so new Z=10

Electronic configuration

  • 1s²2s²2p⁶

Or

  • [Ne]

option B is correct

6 0
1 year ago
Read 2 more answers
What happens when an electrolyte, NaCl is added to hydrate ferric oxide solution​
Dafna11 [192]

Answer:

hydrated ferric oxide is ferric hydoxide sol and is positively charged. When aqueous solution of NaCl is added to it,the Cl- ions neutralise the positive charge on the sol particles. In the absence of charge, brown precipitate is formes due to colloids can be coagulation of particles.Nov 11, 2020

Explanation: hope this help

4 0
3 years ago
Given the reaction: cu(s) + 4hno3(aq) → cu(no3)2(aq) + 2no3(g) + 2h2o(l )as the reaction occurs, what happens to copper?
katrin [286]
From the reaction between Cu and HNO₃, the formed gas is NO₂ instead of NO₃. Hence the correct balanced equation would be,
Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O<span>(l)

Here, Cu goes to </span>Cu(NO₃)₂ by changing its oxidation number from 0 to +2 while NO₃⁻ goes to NO₂ by reducing its oxidation state from +5 to +4 . Hence Cu is oxidized by HNO₃ in the reaction.
6 0
2 years ago
Why do night bird have extraordinary night vision
alexira [117]

Answer:

The low light eye sight depends on the rod cells of the eye,and the birds have more amount of rod cell in their eyes, that's why they have an extraordinary night vision

4 0
11 months ago
A child has a toy balloon with a volume of 1.80 liters. The temperature of the balloon when it was filled was 20° C and the pres
kiruha [24]

Answer:

The new volume of the balloon is 2.422 liters.

Explanation:

Let suppose that gas inside the balloon behaves ideally. From the Equation of State for Ideal Gases, we know that pressure (P), in atmospheres, is inversely proportional to volume (V), in liters, and directly proportional to temperature (T), in Kelvin. Based on this fact, we construct the following relationship:

\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}} (1)

Where:

P_{1}, P_{2} - Initial and final pressures, in atmospheres.

V_{1}, V_{2} - Initial and final volumes, in liters.

T_{1}, T_{2} - Initial and final temperatures, in Kelvin.

If we know that P_{1} = 1\,atm, V_{1} = 1.80\,L, T_{1} = 293.15\,K, P_{2} = 0.667\,atm, T_{2} = 263.15\,K, then the final pressure is:

V_{2} = V_{1} \cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot \left(\frac{T_{2}}{T_{1}} \right)

V_{2} = 2.422\,L

The new volume of the balloon is 2.422 liters.

8 0
2 years ago
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