What is the main function of the part labeled Y in the model?
A To hold and protect the cell's DNA

B. To store enzymes that break down food
C. To store food and other materials inside a cell
D. To use energy from sunlight to make sugars

Answer:

a. cis-4-methylcyclohexanol and sodium chloride

Explanation:

An SN2 reaction is a concerted mechanism of nucleophilic substitution of an alkyl halide in which there is inversion of configuration of the product.

This inversion of configuration occurs because the entering group attacks the substrate from the backside. In the transition state, both the leaving group and entering group are partially bonded to the substrate in the front and backsides respectively.

Hence, if we start with  trans-1-chloro-4-methylcyclohexane, we end up with a product of inverted configuration which is cis-4-methylcyclohexanol and sodium chloride as a byproduct.

Answer:

The correct answer is - solute.

Explanation:

A solute is one half of a solution that is dissolved in the other half of the solution, known as the solvent. Solute particles are always less or lower in quantity or concentration than the solvent in a solution.

In this case, coffee crystals are dissolved in hot water so the solute will be coffee crystals and the amount of coffee crystals are also less than the amount of solvent.

Answer:

solute

Explanation:

Answer:

a) pH = 11.5

b) pH= 3

Explanation:

a) lets calculate the number of moles of each reactant

moles of HCl = 32/1000 * 0.32 = 0.01024 mole

moles of NaOH = 42/1000 * 0.32 = 0.01344 moles

1 moles of HCl reacts with 1 moles of NaOH , so 0.01024 mole of HCl should react with 0.01024 moles of NaOH , but there is some excess NaOH.

excess NaOH= 0.01344 -0.01024 = 0.0032 moles

[H+]= [tex]\frac{10^{-14} }{0.0032} = 3.125 *10^{-12}[/tex]

pH= -log [3.125*10^-12) = 11.5

b)  moles of NaOH = 0.00924

excess HCl present = 0.01024 - 0.00924 =.001

so excess [H+] = 0.001

pH= -log( 0.001) = 3

Answer:

yesssssssssss

Explanation:

Answer:

air

Explanation:

you would be going through air

If you were travelling outward from the earth in a space shuttle at an altitude of 88.4 km you would be in the air.

The height of a celestial object above the horizon, as opposed to its vertical elevation above the surface of a planet or natural satellite (such as the ocean or land).

Space grew taller, height is the perpendicular elevation of an object over its base, the ground, a specific level, or one object over another. For example, the altitude of a mountain or a bird above a tree's top are examples of height.

A triangle's altitude is determined by drawing a perpendicular line from its vertex to its opposite side. The altitude, sometimes referred to as the triangle's height, forms a right-angle triangle with the base.

Thus, when travelling outward from the earth in a space shuttle at an altitude of 88.4 km you would be in the air.

To learn more about altitude refer the link below;

https://brainly.com/question/4390102

#SPJ2

Answer:

Endangered. The meaning of endangered is when a species declines in number- this might be because they are being eaten by another animal which has a higher popupayion, or perhaps because they are being hunted by humans for their meat or fur. Neither reason might be that their food or habitat has been destroyed b humans to create land for farming or housing. one example of name endangered species is Polar Bears: they like in the Antarctic where there is no land, simply ice. Due to humans causing climate change, the world is warming up and the ice is melting. This means polar bears are dying out because it would be too tiring to swim to find ice. For the same reason, other animals are dying in the Antarctic meaning that Poplar Bears have less to eat (being at the top of the food chain -no animal eats polar bears).

Answer:

D. Valance Electrons

Explanation:

Answer:

0.835 Kg

Explanation:

We'll begin by calculating the number of mole of oxygen that will fill 585 L tank at STP. This can be obtained as follow:

1 mole of oxygen (O2) occupies 22.4 L at STP.

Therefore, Xmol of oxygen will occupy 585 L tank at STP i.e

Xmol of oxygen = 585/22.4

Xmol of oxygen = 26.12 moles

Next, we shall determine the mass of 26.12 moles of oxygen. This can be obtained as follow:

Mole of O2 = 26.12 moles

Molar mass of O2 = 2 × 16 = 32 g/mol

Mass of O2 =?

Mole = mass /Molar mass

26.12 = mass of O2 /32

Cross multiply

Mass of O2 = 26.12 × 32

Mass of O2 = 835.84 g

Finally, we shall convert 835.84 g to Kg. This can be obtained as follow:

1000 g = 1 Kg

Therefore,

835.84 g = 835.84 g × 1 Kg / 1000 g

835.84 g = 0.835 Kg

Thus, 835.84 g is equivalent to 0.835 Kg.

Therefore, the mass of oxygen needed to fill the 585 L tank at STP is 0.835 Kg

Answer:

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Answer:

D. both use a strong, non-nucleophilic base such as LDA and use a low temperature.

Explanation:

The more stable enolate is the thermodynamic enolate, and a less stable is known as the kinetic enolate.

The less stable enolate has a less substituted product, while the more stable product has a more substituted product.

Now, to form a kinetic enolate, we need to choose a strong, non-nucleophilic base such as LDA to attract hydrogen from the less substituted site. However, an increase in temperature results in an increase in a reaction, which leads to the formation of a stable product.

So, to form the kinetic enolate, a low temperature will be required.

Thus, To form a kinetic enolate, both use a strong, non-nucleophilic base such as LDA and use a low temperature.

Explanation:

oh shi sorry I wish I could help but I'm stupid

Answer:

4

Explanation:

Carbon tetrahydride is better known as methane.

Methane is an alkane with a chemical formula CH₄. It is a gaseous organic compound.

Answer:

D- 31.9988 g/mol

Explanation:

The molar mass of a substance is the mass in grams of one mole of the substance. For a compound, the molar mass is the gram - formula mass or gram - molecular weight. It is determined by the addition of its component atomic masses;

  To find molar mass of O₂;

      Atomic mass of O = 15.9994g/mol

 Molar mass of O₂ = 2(15.9994) = 31.9988g/mol

Answer:

I do because there are certain people that are right for you. If there was no such thing as soulmates, you could just get with anyone and it wouldnt matter. You dont just fall in love with anyone. You may mistake love for something else. But when you're in love you'll know. Twin flames are not the same. Some people mistake twin flames with soulmates. They are close but not so much in a way.

Explanation:

Answer:

Ye

Explanation:

Answer:

Law of position

Explanation:

Answer:

Law of Superposition

Explanation:

"A major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence."

Answer:

27 %

Explanation:

Step 1: Given data

Step 2: Calculate the mass of the solution

The mass of the solution is equal to the sum of the mass of the solute and the mass of the solvent.

m = 27 g + 74 g = 101 g

Step 3: Calculate the mass percentage of this barium chloride in this solution

We will use the following expression.

%m/m = mass of barium chloride / mass of solution × 100%

%m/m = 27 g / 101 g × 100%

%m/m = 27 %

Answer:

3056.25g

Explanation:

Problem here is to find the mass of Cu(NO₃)₂ to weigh out to make for the number of moles.

 Given;

Number of moles  = 16.3moles

Unknown:

Mass of Cu(NO₃)₂ = ?

Solution:

To find the mass of Cu(NO₃)₂, use the expression below;

    Mass of Cu(NO₃)₂ = number of moles x molar mass

Let's find the molar mass;

  Cu(NO₃)₂ = 63.5 + 2[14 + 3(16)]

                    = 63.5 + 2(62)

                    = 187.5g/mol

Mass of  Cu(NO₃)₂ = 16.3 x 187.5  = 3056.25g

Answer:

a is the peak/ crest

b is the through

c is the amplitude

d is the wavelength

Answer:

See explanation and image attached

Explanation:

Now let us consider the reaction closely, The reaction of (R)-2-chloro-3-methylbutane with sodium iodide is an SN2 reaction that occurs with inversion of stereochemistry.

When the OH^- is used, the reaction proceeds by E2 elimination giving the alkene product as shown in the image attached to this answer.

The reaction of a five-carbon alkanol and an acid to form an ester is also shown in the image attached to this answer.

To prepare an ester. the glassware must first be dried. The alkanol and alkanoic acid are added and refluxed in a magnetic stirrer and conc H2SO4 is added. A thermometer should be present in the set up. The refluxing should continue for about 60 minutes.

Explanation:

Its a particle that can come from loads of things like mass for example, or gas, liquid or solid

Answer:

Explanation:

Answer:

25 km per hour

Explanation:

50/2=25

Answer:

Answer choice B. It is a spiral Galaxy

Answer:

A

Explanation:

Volume will help you determine whether is a solid or a liquid.

Have a great day

Answer:

SeF4 is a polar molecule

Explanation:

SeF4 is a polar molecule because a polar molecule is any molecule that have lone pairs of electrons in the central atom or have atoms that are electronegative and the electrons between that are covalently bonded are not evenly distributed.

The electronegative atoms of flourine in SeF4 are not evenly distributed and kind pairs of electrons are on the central atom.

Answer:

CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)

Explanation:

Methane is an hydrocarbon. Whenever hydrocarbon undergoes a reactio with oxygen, the products formed are carbon(iv) oxide and water.

The equation of the reaction is given as;

CH4 + O2 --> CO2 + H2O

Upon balancing the equation, we have;

CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)

Answer:

The main difference is that neutrons are neutral while protons are positive.

Explanation:

Neutrons have nor charge and protons have a positive charge. Hope this helps!

Answer:

Protons: Determine the element

Neutrons: Is for the Average atomic mass or AMU for short.

Explanation: