Someone help me quick! Will give brainliest

Answer:

D. They are made of repeating subunits.

Explanation:

The first column represting polymers such as DNA, cellulose, nylon, hair are labelled with cells, plant material, synthetic material, animal material and They are made of repeating subunits.

Not all the entries in the first column come from living things as nylon comes from synthetic material (man-made). But all four (DNA, cellulose, nylon, hair) are conists of repeating unit.

DNA made up of nucleotides, cellulose is made up of rpeating units of monomer glucose, nylone is made of repeating unit of two monomers  hexamethylene diamine and adipic acid, and hair is made of repeating unit of  protein called keratin.

Hence, the correct answer is "D. They are made of repeating subunits."

Answer:

They are made of repeating subunits....(D)

Explanation:

hope this helps. also the person above me is correct

Answer:

1. 1g/ml

Explanation:

1. Density is mass divided by volume (g/mL).

10g/10mL = 1 g/mL

2. When you already know the density and the volume, you can use the density as a unit converter.

[tex]5mL*\frac{20g}{mL} = 100g[/tex]

3. It's the same with density and mass.

[tex]20g*\frac{1mL}{5g} = 4mL[/tex]

Answer:

(C) im pretty sure is the answer

Explanation:

Answer:

C

Explanation:

Answer:

KOH+Mg(NO3)2

Explanation:

The double replacement reaction will result in:

2KOH(aq) + Mg(NO3)2[tex]\\[/tex](aq)--> 2KNO3(aq) + Mg(OH)2(s)

Solubility rules prove that Mg+OH^- is insoluble and will result in a precipitate (solid)

Answer:

D- Traits higher on the tree developed before traits lower on the tree.

Explanation:

The answer is D because the higher/stronger a trait is it will be developed before any lower traits.

Answer:

96g

Explanation:

Given parameters:

Number of moles of NaOH = 2.4moles

Unknown:

Mass of NaOH = ?

Solution:

The mass of a substance given the number of moles can be found using the expression below;

     Mass of NaOH  = Number of moles x molar mass;

  Molar mass of NaOH  = 23 + 16 + 1 = 40g/mol

Now input the parameters and solve;

    Mass of NaOH  = 2.4 x 40  = 96g

Answer:

I've already answered this one for you. Anyway, please let me know if you have any more questions or need help!

Answer:

No,  The Significant Figures are 2 3

Explanation:

Answer:

Explanation:

X / Y = 230

The answer is infinite. However, below we have created a list of what divided by what equals 230.

230 / 1 = 230

460 / 2 = 230

690 / 3 = 230

920 / 4 = 230

1150 / 5 = 230

1380 / 6 = 230

1610 / 7 = 230

1840 / 8 = 230

2070 / 9 = 230

2300 / 10 = 230

Answer:

FALSE

Explanation:

they were much more diverse

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 16 g

volume = 512 cm³

We have

[tex]density = \frac{16}{512} = \frac{1}{32} \\ = 0.03125[/tex]

We have the final answer as

Hope this helps you

Answer: I can not see the image.

PLZ HELP ME. This is my second time posting my question because the first time a person put a random answer. If you do not know the question please do not answer it and leave it to someone else. Thank you, and my question is on the attached image below. Thanks!

Answer:

Molecular Mass

Explanation:

It's asking for the numerical quantity. That quantity would be the Molecular Mass. Take the sample mass and divide it by the molecular mass to get the number of moles.

(14g N * 2) + (1g H *4) = 32g / mol of N2H4

To get # of moles, divide the sample mass by the molecular mass

25g / 32g = 0.78125 moles

Answer:

B- Have new properties after they are mixed

I hope this helps

Answer:

2.7 gm/cm cubed

Explanation:

To get the answer, you should divide the mass by the volume or 54 divided by 20 = 2.7

Answer:

Explanation:

Both metal and wooden bowls are at the same temperature . But wood is non-conductor of heat whereas metal is conductor of heat .

If we touch the wooden bowl , heat flows from hot to cold object . Since the finger is at higher temperature , heat flows from finger to wooden bowl . But , since wood is non conducting , it does not allow heat to be conducted through it . Hence very less heat will be conducted from our finger .

On the other hand , if we touch a metal bowl , heat flows from finger to the metal bowl , without any hinderance . Hence rate  of heat flow will be fast in case of metal bowl . As a result of it , we feel cool in touching metal bowl . This feeling will be absent in case of wooden bowl.

Answer:

They have similar properties, because they share similar amounts of electrons in their outer shell, valence electrons! This means they will only be able to interact with other elements with those electrons so they often show similar properties.

Explanation:

Answer:

84.99467

Explanation:

This should be the answer.

Answer:

c chart c

Explanation:

saturated solution: A solution with solute that dissolves until it is unable to dissolve anymore, leaving the undissolved substances at the bottom.

The chart which represents the graph for the saturated solution is chart C, because in that graph extra solutes are present at the bottom.

Saturated solutions are those solutions in which all solutes will dissolve in the solvent and addition of extra solute will not dissolve in the solution, but gets settle down at the bottom of the solution.

Hence chart C shows the saturated solution.

To know more about saturated solutions, visit the below link:
https://brainly.com/question/388072

Answer:

facts

Explanation:

Answer:

yes i understand

Explanation:

Answer:

The statement is true

I found this doing research.

Apparantly, each sub level is made up of one or more orbitals and the orbitals in each sub level are always odd number. Each orbital can only have two electrons and those two electrons will have opposite spin.

Explanation:

Answer:

True

Explanation:

Answer and Explanation:

The Kinetic-molecular theory describes the  behavior of matter that represents the movement of the tiny particles which we called as a molecules i.e. a atoms which is in the group in a given ratio

The molecules which are in the solids i.e. ice cubes are very near to each other and contains a movement that is very limited. Also their translation speed is zero but the forces i.e. intermolecular is high

In the case when a solid melts i.e. the cubes of an ice convert into a water so the molecules should be separate due to which the forces of intermolecular reduced. If the forces of intermolecular is high so it is sufficient to prevent the molecular movement in an independent way

The temperature : 263.016 K

Combined with Boyle's law and Gay Lussac's law  

[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]

P1 = initial gas pressure (N/m² or Pa)  

V1 = initial gas volume (m³)  

P2 = gas end pressure  

V2 = the final volume of gas  

T1 = initial gas temperature (K)  

T2 = gas end temperature  

P1=760 mmHg

V1= 4 L

T1 = 275 K

P2=704 mmHg

V1=4.13 L

[tex]\tt \dfrac{760\times 4}{275}=\dfrac{704\times 4.13}{T_2}\\\\T_2=263.016~K[/tex]

Answer:

Unwashed hands: This sample swab will have the most bacteria growth, as the bacteria has not been cleaned or Removed at all from this person‘s hands.

Regular Soap: Soap is meant to remove bacteria, not kill it. So by swabbing  her hands after washing with regular soap , this technique will not be very effective. This also depends on if the soap is antibacterial or not. By wiping your hand, it may just move the bacteria.

Re-Swabbing: this will have almost the same exact effect as the first experiment. There may be a minute difference between unwashed hands and re-wiping unwashed hands.

Hand sanitizer: hand sanitizer is meant to kill bacteria, not move it, so this should have the least bacteria/virus beings on this swab. Alcohol based hand sanitizer is the most effective, and should kill 99.99 percent of germs. However, you have to wait atleast a minute before swabbing to let hand sanitizer work.

Explanation: I looked it up! :) hopefully this is helpful, please let me know! Have a great day:)

Answer:

i think its letter D

Explanation:

Answer:

I think it is B if it is not then I am sorry.

Explanation:

Answer:

true

Explanation:

please mark BRAINLIEST

Answer:

Explanation:

I'm not sure what you mean by the units. The answer using kg and ms is 23000 * 50 = 1150000 kg m/s

Answer:

Let's start with the fact that cereals , are made of grains and are mostly carbohydrates. therefore they contain carbon oxygen and hydrogen. They also contain proteins so have nitrogen. Plants have the minerals that are in the soil where they grow, so the list you have is correct. They also generally have added vitamins ad minerals. The vitamins contain C, H, O N, and a few others such as sulfur, The added minerals might contain:copper, iron, zinc, cobalt, selenium, silicon and molybdenum .

Mark me as brainliest if it was helpful

The three elements present in the ingredients of the cereal drink which are not listed in the nutrition facts are Iron, Calcium, and Zinc

Cereals are monocotyledonous grass crops cultivated annually for the purpose of consumption. They are rich in fiber and energy. Examples of them include;

Cereal drinks are processed drinks extracted from cereal crops through fermentation. They are rich in nutrients as they contain important sources of carbohydrates, dietary protein, and vitamins.

The ingredients present in a cereal drink are composed of essential elements such as:

Some of which are not listed in the nutrition facts are Iron, Calcium, and Zinc.

Therefore, we can conclude that the elements present in the ingredients of the cereal drink which are not listed in the nutrition facts can be Iron, Calcium, and Zinc.

Learn more about essential elements here:

https://brainly.com/question/14606699?referrer=searchResults