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2 years ago

8

How do populations survive when the environment changes?

2 answers:

kkurt [141]2 years ago

6 0

With adaptation, or a mutation that provides a better way for the organism to survive in the new environment

katrin [286]2 years ago

3 0

Answer:

adaptation?

Explanation:

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What is point group of allene?

Fantom [35]

Allene (1,2-propadiene) has point group D2d, itself is achiral because it has two planes of symmetry. ... An allene with substituents on one terminal carbon atom are unlike and substituent on other terminal carbon atoms are same, allene will be achiral. It will have one symmetry plane.

Hope this helped :)

4 0

3 years ago

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Which of the following is NOT acidic?

gayaneshka [121]

Blood ...............

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2 years ago

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A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg

Brut [27]

Answer: $1.0\times 10^2g$

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=(-6.4-(13.6))^0C=7.2^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte like urea)

$K_f$ = freezing point constant = $3.96^0C/m$

m= molality

$\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of non electrolyte (urea) = 60.06 g/mol

Mass of non electrolyte (urea) added = ?

$7.2=1\times 3.96\times \frac{xg}{60.06 g/mol\times 0.95kg}$

$x=1.0\times 10^2g$

Thus $1.0\times 10^2g$ urea was dissolved.

8 0

3 years ago

The element that has a valence configuration of 5s25p6 is ________.

Ivanshal [37]

Its period 5 from 5s25p6, with Xenon(54) as the noble gas. 2+6 = 8 electrons

54+8 = 62, or Sm.

3 0

2 years ago

An object has a mass of 4 grams and a volume of 2 cm^3.what is the density of the object?

stellarik [79]

Answer:

2.0 grams per cubic centimeter

Explanation:

(You can refer to the DMV triangle to help you solve this!)

Density = Mass/Volume

Density = 4.0g/2.0cm3

Density = 2.0g/cm3

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

3 0

3 years ago

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