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3 years ago

In a group of dogs, some individuals have short fur and others have long fur. In this gropp,

Chemistry

2 answers:

Tcecarenko [31]3 years ago

5 0

Answer:

long fur

Explanation:

Phenotype refers to an individual's observable traits, such as height, eye color, and blood type ( the outside apperance ) so what is the dog's fur can be discribed as ? the answer is long fur

julsineya [31]3 years ago

5 0

Answer: long fur

Explanation:

This is what needs to be said

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Calculate the work (kJ) done during a reaction in which the internal volume expands from 28 L to 51 L against an outside pressur

Kamila [148]

Answer:

-11 kJ

Explanation:

Step 1: Convert the pressure to Pascal (SI unit)

We will use the relationship 1 atm = 101,325 Pa.

$4.9 atm \times \frac{101,325Pa}{1atm} = 5.0 \times 10^{5} Pa$

Step 2: Convert the volumes to cubic meters (SI unit)

We will use the relationship 1 m³ = 1,000 L.

$28 L \times \frac{1m^{3} }{1,000L} = 0.028 m^{3}$

$51 L \times \frac{1m^{3} }{1,000L} = 0.051 m^{3}$

Step 3: Calculate the work done during the expansion of a gas

We will use the following expression.

$W = -P \times \Delta V = -5.0 \times 10^{5} Pa \times (0.051m^{3} -0.028m^{3}) =-1.1 \times 10^{4} J$

Step 4: Convert the work to kiloJoule

We will use the relationship 1 kJ = 1,000 J.

$-1.1 \times 10^{4} J \times \frac{1kJ}{1,000J} =-11 kJ$

6 0

3 years ago

Atoms of the same element that different in the number of neutrons are classified as

nignag [31]

Atoms of the same element that different in the number of neutrons are classified as isotopes

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3 years ago

What do scientists use to increase the surface area of a solute

marta [7]

use a mortar & pestle to grind the solute into smaller particles, thus increasing the surface area.

6 0

4 years ago

Read 2 more answers

Please fill in the blank: structures are fully functional, show evidence of a common ancestor, and may or may not have the same

Vinil7 [7]

Answer:

Hello There. The answer is Both provide evidence for evolution. Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.

Hope It Helps!

7 0

3 years ago

Lakes that have been acidified by acid rain can be neutralized by limiting the addition of limestone how much limestone is requi

svet-max [94.6K]

From the given pH, we calculate the concentration of H+:
[H+] = 10^-pH = 10^-5.5
We then use the volume to solve for the number of moles of H+:
moles H+ = 10^-5.5M * 4.3x10^9 L = 13598 moles
From the balanced equation of the neutralization of hydrogen ion by limestone written as
CaCO3(s) + 2H+(aq) → Ca2+(aq) + H2CO3(aq)
we use the mole ratio of limestone CaCO3 and H+ from their coefficients, which is 1 mole of CaCO3 is to react with 2 moles of H+, to compute for the mass of the limestone:
mass CaCO3 = 13598mol H+(1mol CaCO3/2mol H+)
(100.0869g CaCO3/1mol CaCO3)(1kg/1000g)
= 680 kg

4 0

3 years ago