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SpyIntel [72]
3 years ago
8

What is sexual selection? *

Chemistry
1 answer:
yawa3891 [41]3 years ago
6 0

Answer:

B: The behaviors an animal must display in order to find a mate

Explanation:

An animal usually looks for specific characteristic in order for their offspring to develop those same characteristics and be able to survive

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12.<br>Contrast and compare:<br>a) ionic and covalent bonding​
Y_Kistochka [10]

Answer:

Ionic bonds - an intramolecular force exist in a nonmetal and metal compounds such as NaCl. The Na donate 1 electon to Cl to complete its octet rule.

Covalent bond - an intramolecular force exist in a nonmetal and nonmetal compounds such as bonds O2, Cl2, CO2, sugar, proteins and most of organic compounds and biomolecules by sharing electrons to bond.

There are two types of covalent bonds: polar and nonpolar. Polar bond is a bond between two different nonmetal atoms of different electronegativities. While nonpolar bond is a bond between the same atom or two differenct atoms of the same electronegativities (if there is). Their electronegativities pull will cancel so that their overall polarity is zero.

5 0
3 years ago
In covalent bonding, electrons are shared within molecules. This is because..
avanturin [10]

Answer:

You're answer is B.

Explanation:

Covalent Bonds share a negative and positive ion.

6 0
3 years ago
Calculate the density of nitrogen gas, in grams per liter, at stp.
lesantik [10]

Standard temperature is 273 K

Standard pressure is 1 atm

We use the ideal gas equation to find out density of nitrogen gas in g/L

Ideal gas equation:

PV = nRT\\  PV = (\frac{Mass}{Molar mass)}RT\\   P(Molar mass) = (\frac{Mass}{Volume})RT\\  \frac{Mass}{Volume}=\frac{P(molar mass)}{RT} \\  Density = \frac{P(Molar mass)}{RT}

Molar mass of N_{2} = 28 g/mol

Pressure = 1 atm

Temperature = 273 K

Density = \frac{(1atm)(28 g/mol)}{(0.08206 \frac{L.atm}{mol.K})(273 K)}

= 1.25 g/L

Therefore, density of nitrogen gas at STP is 1.25 g/L

4 0
3 years ago
An acid is hydrogen and one or more nonmetals. <br><br> Select one:<br> True<br> False
dlinn [17]

Answer:

true

Explanation:

hope this helps!

brainliest please

have a great day

please fully rate

please no reporting. (it makes me sad)

6 0
2 years ago
You want to know the concentration of 50.0 ml of a solution of H2SO4. The endpoint was reached when 40.0 ml of 0.20M Ba(OH)2 tit
Kryger [21]
Can you explain it a little better ?
8 0
3 years ago
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