Brainliest for correct answer

Answer:

For example, to make 70% ethanol from 95% ethanol, take 70 mL of 95% ethanol and add enough water to bring the volume to 95 mL. You will then have 95 mL of 70% ethanol. This works for any dilution and all that is required is a large enough graduated cylinder.

When using liquid reagents, the percent concentration is based upon volume per volume, i.e. #ml/100ml. Example 2: If one wished to make a 70% ethanol solution, 70 ml of 100% ethanol would be dissolved in 30 ml of water (or the equivalent for whatever volume was needed).

Answer:

Point B

Explanation:

Answer:

oh absolutely. he is the best boy. also yummy. i would not eat him tho.

Answer:

drop ur id ill add u though

Explanation:

Answer:

C and D

Explanation:

Cellular respiration, which is the process whereby energy in form of ATP is synthesized, occurs in the MITOCHONDRIA. The products of cellular respiration (CO2 and H2O) are used as reactants by plants to produce glucose and oxygen in their CHLOROPLASTS in a process called PHOTOSYNTHESIS. The glucose and oxygen are broken down in the MITOCHONDRIA to yield energy by cells.

In this image, letters C and D represents glucose and oxygen, which are products of photosynthesis in the chloroplast. Glucose and oxygen represented by C and D are broken down to produce energy for cells in the mitochondria

Answer:

Force, F = 90 N

Explanation:

Given that,

Mass of the bicycle and rider, m = 60 kg

Acceleration of the bicycle and rider, a = 1.5 m/s²

We need to find the force acting on the bicycle and rider to accelerate. Let it is F. Its force is given by :

F = ma

F = 60 kg × 1.5 m/s²

F = 90 N

So, the force acting on the bicycle and rider is 90 N.

Answer:

Metabolism

Explanation:

The best description of weathering and erosion should be considered as the option d. They significantly change the surface of the Earth every few days.

Weathering represent the break down or the rocks should be dissolved out and the minerals should be on the earth surface.

When the rock should be split down so this process we known as the erosion transports.

Therefore, the option d is correct.

Learn more about earth here: https://brainly.com/question/12004410

Answer:

in single-celled organism,signaling allows population of cells to coordinate with one another and work like a team to accomplish tasks no single cell could carry out on its own. the study of cell signaling touches multiple biological disciplines 5 years developmental biology , neurontology, and endocrinology.

* explanation* : hope this helped you

DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.

Mutation (A)

Answer:

A group of monkeys may be commonly referred to as a tribe or a troop.

i think that correct?

Explanation:

Answer:

A. 20%

Explanation:

A DNA molecule consists of four nucleotides viz: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). According to Chargaff in his complementary base pairing rule, these nucleotides pair with one another in such a way that A bonds to T, while G bonds to C.

Based on Chargaff's rule, the amount of Adenine in the DNA is equal to the amount of Thymine while the amount of Guanine is equal to that of Cytosine i.e. A=T, G=C.

A + T + G + C = 100%

Hence, in this question, a scientist finds that 20% of the strands bases are Thymine. This means that the amount of Thymine in that DNA will also be 20%. S

Since A=T = 20% in accordance to Chargaff rule.

Answer:

C. Water freezes and thaws inside rock cracks, causing them to widen and then split.

Explanation:

When water gets in the crack at the bottom and freezes, frost wedging occurs.

Frost wedging happens when water gets in crack, freezes, and expands. This process breaks rocks apart. When this process is repeated, cracks in rocks get bigger and bigger (see diagram below) and may fracture, or break, the rock.

Answer:

Saturated Fats

Explanation:

BRAINLIEST PLEASEEEEE

polyunsaturated

Explanation:

all dietary food contains(polyunsaturated)are solid

The structure A in the question seems missing but the given answer is based on the description given in the question.

Answer:

The gaseous exchange of carbon dioxide(CO2) and oxygen(O2) occurs through small, regulated openings called stomata during photosynthesis.

Therefore the Structure A is Stomata

Answer:

Its the first one: acts as the control center of the cell

Explanation:

Answer:

A.

Explanation:

It acts as the brain of the cell as it tells other organelles their functions.

Answer:

I'm dead

Explanation:

Bruh you literally go to my school. I'm dying over this.

The combination which is always true of the nucleotide composition of a sample of DNA is:  [tex]A + C = G + T[/tex]

Deoxyribonucleotides is the basic unit of a deoxyribonucleic acid (DNA).

Basically, it comprises a nitrogenous base and phosphate group that are commonly known as deoxyribose sugar.

A nucleotide refer to a subunit of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) that consists of a nitrogenous base.

Hence, the nitrogenous base or nucleotide composition of a deoxyribonucleic acid (DNA) includes the following:

In conclusion, the combination which is always true of the nitrogenous base or nucleotide composition of a sample of DNA is:

               [tex]Adenine (A) + Cytosine (C) = Guanine (G) + Thymine (T)[/tex]

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Answer:

C) The brown trilobite fossils are older than the yellow shell fossils

Explanation:

Answer:

Explanation:

Land is important as it provides a suitable habitat for humans as with high population a higher land mass is needed in order to provide satisfactory living condition likewise if lower population less land mass is needed while sea breeze is needed to it ability to stabilize thermal temperature in which is needed to keep a population physiology content

Answer:

Crystal form refers to the geometric shape of mineral crystals. Crystal form is caused by the symmetrical, three-dimensional arrangement of atoms inside the mineral.

Explanation:

Answer:

These are my answer choices so I guess it's an mixture, it's a mixture of filtration .. so its a mixture

Explanation:

(1) The original material was a mixture.

(2)The original material was a compound.

(3)The original material was either an element or a compound.

(4)The original material was either a mixture or a compound.

A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.

Filtering is a method for the separation of heterogeneous mixtures. A filter paper is placed in a funnel and the mixture is poured over it. The liquid passes the filter while the solid is retained. Since this was the situation of the student, we can conclude that the original material was a mixture. After the filtering, the student will have 2 homogeneous systems.

A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.

You can learn more about filtering here: https://brainly.com/question/12423738

Answer:

1. Each Giraffe's neck length is different

2. The tall neck Giraffes reproduced and their off spring inherited their genes

3. A drought occurred.

Explanation:

Answer:

There are milder winters in the west and colder winters in the east

Answer:

There are milder winters in the west but colder winters in the east of the Cascade Mountains. or d/4th one

Explanation:

made it easier to read other one