CHEMISTRY MIDDLE SCHOOL

Study the concentration amount shown on the juice label. Then answer the question. If you had 100 mL of juice, how many milliliters would be fruit juice?A.
25 mL
B.
2.5 mL

C.
75 mL

D.
250 mL

Answers

Answer 1
Answer: If the liquid is, say, 50% concentration, that means that, in this case, 50 milliliters would be a fruit juice, while the other 50% would be of other stuff. So look at the concentration marking. It will be a percentage that many milliliters will be of fruit juice--75%=75 milliliters, and so on, because there is an even 100mL of juice. 

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Refer to the figure showing a pedigree of a family affected by an x-linked recessive disorder. A female in generation 3 isn't a carrier of the disorder. How can this be?A. Females receive X chromosomes from this fathers only, which are unaffected in this case.B. Females don't have X chromosomes so aren't affected by gene disorders passed on the X chromosome.C. Females receive an X chromosomes from each point parent, but in cases of recessive disorders, the muted chromosome isn't passed on to daughters.D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.
What are eight elements named after towns
Least to greatest 2.62,2 2/5, 26.8%, 2.26%,271%
4Fe + 3O2 → 2Fe2O3Iron combines with oxygen to form rust. Given the chemical reaction, how many grams of 4Fe + 3O2 would produce 10 g of rust?A) 7 g B) 10 g C) 30 g D) 70 g

Explain whether smoke filling up a room is diffusion or not.

Answers

yes it is diffusion ..
explanation :
 diffusion is the movement of particles from high concentration to low concentration .. 
as the smoke rises at one corner of the room soon it spreads all over the room which is simply diffusion ..
Yes this is diffusion because diffusion is the movement of particles from high concentration to low concentration, so when smoke go up in one corner then the smoke goes all over the room which is diffusion.

How many electrons does N 3-have?​

Answers

Answer: 10 electrons

Explanation:

N represents Nitrogen. Nitrogen has an atomic number of 7, this means in ground state it has 7 electrons also.

But N-3, means Nitrogen has gained 3 more electrons. So, we have 10 electrons

What is the correct label for a solution? A. a homogeneous mixture B. a graduated substance C. a heterogeneous mixture D. a primary mixture of elements

Answers

The correct label for a solution is; a homogeneous mixture. Option A is correct.

A solution is a type of homogeneous mixture. A homogeneous mixture is one in which the components are uniformly distributed and evenly mixed at a molecular or atomic level. In other words, all parts of the mixture are the same throughout, and there are no visible boundaries or distinct phases between the different components.

In a solution, one or more substances, called solutes, are dissolved in a solvent. The solute(s) become uniformly dispersed at the molecular or atomic level within the solvent, creating a single phase with consistent properties. This even distribution is achieved through the interactions between the solute particles and the solvent particles.

Examples of solutions include;

Saltwater: Sodium chloride (salt) is dissolved in water (solvent) to create a homogeneous solution.

Sugar water: Sucrose (sugar) is dissolved in water to form a homogeneous mixture.

Solutions are essential in various applications, such as in chemistry, biology, medicine, and everyday life. They are commonly encountered and used for various purposes, including in cooking, pharmaceuticals, cleaning agents, and many industrial processes.

Hence, A. is the correct option.

To know more about homogeneous mixture here

brainly.com/question/30587533

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The answer is A. Answers B, C, and D are incorrect. A and C sound similar but are different in many ways. Source- I took this test. Answer A

Which term identifies a type of organic reaction?(1) deposition (3) esterification
(2) distillation (4) sublimation

Answers

The answer is (3) esterification. Note that deposition, distillation and sublimation are not chemical changes, they are physical changes, so you can solve this question by elimination if you know that. Regarding sterification it is a well known chemical reaction that consists on the formation of esters from carboxilic acids.

Answer:

(3) esterification

Explanation:

1) Deposition is a process in which a vapor directly condenses into a solid. It is the reverse of sublimation and therefore a process which involves a physical/phase change.

2) Distillation is a process in which a liquid mixture is separated based on the differences in their boiling points. This is a physical separation and not any form of a chemical change.

3)Esterification is an organic reaction in which a carboxylic acid is treated with an alcohol to form an ester.

4) Sublimation is again a physical/phase change process in which a solid gets converted into a gas.

I will give brainliest!! Which branch of chemistry deals with the mass relationships of elements in compounds and the mass relationshops among reactants and products in chemical reactions?

a
quantitative analysis
b
entrophy
c
chemical kinetics
d
stoichiomentry

Answers

That would be D Stoichiometry.

Answer:

d

Explanation:

2C₂H6 + 702 —>4C02 + 6H₂OIf you used 4.88x10^25 molecules of C2H6 to start a
fire, how many molecules of CO2 did you Create?

Answers

Answer:

975.56×10²³ molecules

Explanation:

Given data:

Number of molecules of C₂H₆ = 4.88×10²⁵

Number of molecules of CO₂ produced  =  ?

Solution:

Chemical equation:

2C₂H₆  + 7O₂     →      4CO₂ + 6H₂O

Number of moles of C₂H₆:

1 mole = 6.022×10²³ molecules

4.88×10²⁵  molecules×1mol/6.022×10²³ molecules

0.81×10² mol

81 mol

Now we will compare the moles of C₂H₆ with CO₂.

                     C₂H₆          :             CO₂

                          2           :               4

                           81         :           4/2×81 = 162 mol

Number of molecules of CO₂:

1 mole = 6.022×10²³ molecules

162 mol ×6.022×10²³ molecules / 1 mol

975.56×10²³ molecules

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