Which is not a difference between a population showing exponential growth and a population showing logistic growth?a. food limits
b. disease limits
c. carrying capacity
d. mutation rate
Answers
Answer;
Mutation rate
-Mutation rate is not a difference between a population showing exponential growth and a population showing logistic growth.
Explanation;
-When the resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve and when the resources are limited, populations exhibit logistic growth.
-The carrying capacity is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment. It affects the size of population and thus has an effect on both exponential and logistic growth.
-Food limits and disease limits are also other factors that may determine the population size in a biological ecosystem.
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The immediate concern of chlorine exposure is the effects on the ____?
An illegal drug stimulates the parasympathetic nervous system, causing the user to appear tranquilized. What could indicate to a paramedic whether or not the person took this drug?A. High blood pressure and droolingB. Low blood pressure and droolingC. High blood pressure and dry mouthD. Low blood pressure and dry mouth
If the acetylene tank contains 37.0 mol of C2H2 and the oxygen tank contains 81.0 mol of O2, what is the limiting reactant for this reaction?
Answers
p = 1,5atm = 1,5*101325 = 151987,5 Pa
V = 11,9l = 0,0119m3
n = ?
R = 8,314 J/mol*K
T = 20°C = 20+273 = 293K
pV=nRT
151987,5*0,0119 = n*8,314*293
1808,6513=n*2436,002 ||:2436,002
0,7425 = n >>> moles of CO2
1 mole of CO2 = 44g
1 mole of CO2--------------44g
0,7425 moles of CO2----------x
x = 32,67g of CO2
Mn and Al3+
Al and Mn
Mn2+ and Al3+
Answers
The reactants that would lead to a spontaneous reaction are Mn2+ and Al3+. Al and Mn are not because they are stable reactants. Mn and Al3+ are not because Mn is stable. Mn2+ and Al are not because Al is stable.
Answer:
ITS B
Explanation:
I took the test on edge
29.81 g/mol
48.81 g/mol
67.81 g/mol
Answers
The molar mass of BF3 is 67.81 g/mol
Explanation
- Molar mass is the mass of all atoms in a molecule in gram per mole.
- molar mass of a molecule is calculated by adding atomic mass of constituent atom
- use the periodic table to determine the atomic mass of each element in the molecule.
that is;
atomic mass of B = 10.81 g/mol
atomic mass of F = 19 g/mol
- since there 3 atoms of F in BF3 the atomic massof F in BF3= 3 x19 = 57 g/mol
- total molar mass of BF3 = 10.81 g/mol + 57 g/mol = 67.81 g/mol
67.81 g/mol is the molar mass of BF . Therefore, the correct option is option D among all the given options.
The ratio among the mass with the quantity of substance (measured within moles) in any sample of a compound of chemicals is known as the molar mass (M) in chemistry. The molar mass of a material is a bulk attribute rather than a molecular one. The compound's molecular weight is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average or a function of the relative proportion of the isotopes of the component atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights.
atomic mass of B = 10.81 g/mol
atomic mass of F = 19 g/mol
atomic massof F in BF= 3 x19 = 57 g/mol
total molar mass of BF = 10.81 g/mol + 57 g/mol = 67.81 g/mol
Therefore, the correct option is option D.
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(2) decomposition
(3) Single replacement(4) double replacement
Answers
Answer:
A.) synthesis
Explanation:
edge 2021
Answers
Answer : The number of moles of hydrogen gas needed are, 0.253 mole
Explanation : Given,
Moles of water = 0.253 mole
Now we have to calculate the moles of hydrogen gas.
The given balanced chemical reaction is,
From the balanced reaction we conclude that,
As, 2 moles of water obtained from 2 moles of hydrogen gas
So, 0.253 moles of water obtained from of hydrogen gas
Therefore, the number of moles of hydrogen gas needed are, 0.253 mole
B) -11
C) 0
D) 23
Answers
Answer:
Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Explanation: