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denis23 [38]
3 years ago
11

How would you buffer a solution that has a pH of 12

Biology
1 answer:
Zarrin [17]3 years ago
4 0
If by buffer you mean dilute or cancel out a 12 ph level is a base so you need to add the equal and opposite amount of acid to it....kind of like how -1+1=0

hope this helps im learning about this too!
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Please help<br> Question is in photo
WINSTONCH [101]

Answer:

the first one.

Explanation:

7 0
3 years ago
Using a geometric growth model to predict population growth, a population of 10 individuals at time zero with a finite growth ra
Grace [21]

Answer: Option E, in 12 years.

Explanation:

A geometric growth model is characterized by its finite growth rate, known as lambda. The size of the population after a unit of time has passed can be calculated using the last known size and lamba as:

N_{t+1} = \lambda * N_t

Starting from the initial value of population, the next one will be calculated multiplying by 1.4, and the next one multiplying again by 1.4, thus we can define a function that relates the time passed in year to the size of the population:

N(t) = \lambda^{t} *N_0

Substituting our values we get the function that defines the growth of our poupulation:

N(t) = 1.4^{t} *10

Then, we just have to clear the t that gives a population of 500:

500 =  1.4^t*10, divide\ both\ sides\ by\ 10\\50 = 1.4^t, apply\ log_{1.4}(x)\ to\ both\ sides\\log_{1.4}(50)=t\\11.63=t

Thus, at 12 years, the population will be greater than 500.

5 0
3 years ago
How do water’s relative densities as a solid and a liquid differ from that of most other substances
Rasek [7]
Solid water is less dense than liquid causing it to float while other substances are mainly more dense as solids.
6 0
3 years ago
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A large population of laboratory rats was allowed to breed randomly for a number of generations. In this population, a dominant
ivann1987 [24]

Answer:

Frequency of heterozygous animals with agouti fur  is 42 %

Explanation:

As per the Hardy Weinberg's equation -

q^2 represents the frequency of population with phenotype expressed by homozygous recessive genotype

p^ 2 represents the frequency of population with phenotype expressed by homozygous dominant genotype

and 2pq represents the frequency of population with phenotype expressed by homozygous recessive genotype

Given -

q^2 = 0.49\\q = 0.7

As per first principle of Hardy Weinberg's equilibrium

p + q = 1

Substituting the value of q in above equation, we get -

p = 1- 0.7 \\p = 0.3

As per second  principle of Hardy Weinberg's equilibrium

p^2 + q^2 + 2pq = 1\\

Substituting the given values in above equation, we get -

0.09 + 0.49 + 2pq = 1\\2pq = 1 - 0.58 \\2pq = 0.42

Frequency of heterozygous animals with agouti fur  is 42 %

5 0
2 years ago
Right now, we are threatened by global climate change. This is due to changes in _____ conditions, an increase in _____. atmosph
ololo11 [35]

Answer: atmospheric, carbon dioxide

Global climatic change is directly linked with the changes in the atmospheric conditions, this is because of increase in the carbon dioxide levels in the atmosphere. Atmosphere is the distinct layer of gases in the planet earth. Atmosphere regulates climatic change in a region. Carbon dioxide is a hot and harmful gas affects the quality of respirable air, and increasing the temperature of global climate.  

3 0
3 years ago
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