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beks73 [17]
3 years ago
15

Slid X

Biology
1 answer:
Vikki [24]3 years ago
7 0
Hmm yes I think your right dolls are pretty creepy Cameron
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How are agglutinins like security guards
cestrela7 [59]
Agglutinins is a antibody or other substance that causes particles to coagulate from another more thickened mass.

They are like security guards in that, they are very slow and lazy so to speak.
3 0
3 years ago
-<br> Calculate the molar mass of a gas that has a density of 1.55g/L.
VLD [36.1K]

Answer: 39.86 g/mol

Explanation:

Assuming this gas is at a pressure of 0.99 atm and a temperature of 37 \°C+273.15=310.15 K, we can solve this problem with the Ideal Gas Law equation:

P.V=n.R.T  (1)

Where:  

P=0.99 atm is the pressure of the gas  

V is the volume of the gas  

n the number of moles of gas  

R=0.0821 \frac{atm.L}{mol.K} is the gas constant  

T=310.15 K is the absolute temperature of the gas in Kelvin

On the other hand, we know the density \rho=1.55 g/L is given by a relation between the mass m and the volume V:

\rho=\frac{m}{V} (2)

Then, the mass is:

m=\rho V (3)

Another important fact here is that the molar mass M_{mass} of an element is given by a relation between the mass of that element and the number of moles n it contains:

M_{mass}=\frac{m}{n} (4)

Isolating n:

n=\frac{m}{M_{mass}} (5)

Substituting (5) in (1):

P.V=\frac{m}{M_{mass}}.R.T  (6)

Substituting (3) in (6):

P.V=\frac{\rho V}{M_{mass}}.R.T  (7)

Isolating M_{mass}:

M_{mass}=\frac{\rho V}{PV}RT (8)

Simplifying:

M_{mass}=\frac{\rho}{P}RT (9)

Solving with the given data:

M_{mass}=\frac{1.55 g/L}{0.99 atm}(0.0821 \frac{atm.L}{mol.K})(310.15 K) (10)

Finally:

M_{mass}=39.86 g/mol This is the molar mass of the gas

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3 years ago
The diploid number of chromosomes in a species is always what
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Diploid meaning 2. Is a cell/ organism that has paired chromosomes, one from each parent. Humans have 23 of these.
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Does anyone know the answer above
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The answer is c since a coccus is any spherical or roughly spherical bacterium.
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5. Observe: Increase the Sim. speed by two levels. Click Play, and wait for a while. What occurs as ume goes by?​
julsineya [31]

your question not correct

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