please help appreciate it!!

Answer:

sorry i dont know

Explanation:

Answer:

A chemical symbol is a shorthand method of representing an element. Instead of writing out the name of an element, we represent an element name with one or two lettersnation:

Answer:

Parasites take nutrients from another organism's body.

Explanation:

Answer:

CH₂

Explanation:

From the question given above, the following data were obtained:

Mass of Carbon (C) = 5.41 g

Mass of compound = 6.32 g

Empirical formula =?

Next, we shall determine the mass of Hydrogen (H) in the compound. This can be obtained as follow:

Mass of Carbon (C) = 5.41 g

Mass of compound = 6.32 g

Mass of Hydrogen (H) =?

Mass of H = mass of compound – mass of C

Mass of H = 6.32 – 5.41

Mass of H = 0.91 g

Finally, we shall determine the empirical formula of the compound. This can be obtained as follow:

Mass of C = 5.41 g

Mass of H = 0.91 g

Divide by their molar mass

C = 5.41 / 12 = 0.451

H = 0.91 / 1 = 0.91

Divide by the smallest

C = 0.451 / 0.451 = 1

H = 0.91 / 0.451 = 2

Thus, the empirical formula for the compound is CH₂

Answer:

(a). (I). 0.816; 0.816

(ii). 0.917.

(b). When the value for the critical extent of reaction is 0.866, then the number of moles of glycerol and the number of moles of di-carboxylic acid is the same. But, in this case the number of moles of glycerol is not the same with the number of moles of di-carboxylic acid.

Explanation:

So, without mincing words let's get straight into the solution to the question above.

(a). Using the (i) statistical theory of Flory to Determine the critical extent of reaction gelation, one has to make use of the two equations given below;

P(1) = [ v + vb ( n - 2)^-1/2 ------------------(1).

P(2) = v^1/2 [ 1 + b ( n - 2)^-1/2 ----------(2).

The value for v = 1.2 + 1.2/ 1.2 × 2 = 1.

The value of b = (1.2 + 1.2)/ 1.2 = 0.5.

Thus, putting the values into the equation (1) and (2) above gives;

NB: n = 3.

P(1) = [ 1 + 1 × 0.5 ( 3 - 2)^-1/2 = 0.816.

P(2) = 1^1/2 [ 1 + 0.5 ( 3 - 2)^-1/2 = 0.816.

Using the (ii) carother's theory to Determine the critical extent of reaction gelation.

We have the following values for glycerol: k = 0.4, n = 3.

For ethylene glycol; k = 0.6, n = 2.

Therefore, the critical extent of reaction gelation =2/[ (0.6 × 2) + (0.4 × 3) + (1.2 × 2)/ (0.6 + 0.4 + 1.2)] = 2/ 2.18 = 0.917

(b). When the value for the critical extent of reaction is 0.866, then the number of moles of glycerol and the number of moles of di-carboxylic acid is the same. But, in this case the number of moles of glycerol is not the same with the number of moles of di-carboxylic acid.

Answer:

There are no options but the answers are:

Explanation:

There are six main requirements for a typhoon to form and develop. It needs an abundance of unstable atmosphere/ vertical motion. The ocean waters must have a temperature of 26.5ºC spanning from the surface up to a depth of at least 50 meters (160 ft.) or more. Another requirement is to have too much water vapor present in air known as relative humidity. The low vertical wind shear also contributes to the formation of typhoon. It also needs an existing distance/pre-existing disturbance  for typhoon development which is 500 km (300 mi) from the equator. The Coriolis force causes the powerful wind to spin at this particular region.

If any one of these requirements were below average or minimum, a tropical cyclone would not form.

Answer:

V = 150 mL

Explanation:

Hello!

In this case, since the molarity of a solution is computed via:

[tex]M=\frac{n}{V}[/tex]

Whereas we are asked to compute the volume:

[tex]V=\frac{n}{M}[/tex]

Thus, we first compute the moles in 12.0 g of NaOH as its molar mass is about 40.0 g/mol:

[tex]n=\frac{12.0g}{40.0g/mol}=0.3mol[/tex]

Thus, at first instance, the volume liters is:

[tex]V=\frac{0.3mol}{2.0mol/L} \\\\V=0.15L[/tex]

Which in milliliters is:

[tex]V=0.15L*\frac{1000mL}{1L}\\\\V=150mL[/tex]

Best regards!

Cuz D is cyclo-thingy molecule and its a sugar

(i think A is fatty acid or other molecules and C is hydrocarbon. B dont have oxygen)

Monosaccharides are the group of carbohydrates that are the simplest form of sugar. Option D. galactose is a monosaccharide sugar.

Monosaccharides are simple sugars and are the fundamental unit of carbohydrates. The general structural formula for the monosaccharides is [tex]\rm (CH_{2}O)_{n}.[/tex]

The structure of the monosaccharide sugar contains carbon, oxygen, and hydrogen molecules in their structure. Option A. is a fatty acid molecule, and option B. lacks an oxygen molecule, and hence they are not monosaccharides.

Option C. is a hydrocarbon chain that lacks oxygen molecules and option D. is a galactose that is a simple sugar with six carbon atom rings.

Therefore, option D. galactose is the monosaccharide.

Learn more about monosaccharides here:

https://brainly.com/question/5282729

Answer:

2000 millimeters

Explanation:

Answer:

2.14 g.

Explanation:

Hello!

In this case, since the mole ratio between nitrogen and oxygen is 2:5 respectively, we realize we first need the moles of nitrogen given it's atomic mass (14.01 g/mol):

[tex]n_N=0.750g*\frac{1mol}{14.01g}=0.0535molN[/tex]

Now, we calculate the moles of oxygen:

[tex]n_O=0.0535molO*\frac{5molO}{2molN}=0.134molO[/tex]

Then, we compute the moles of oxygen given its atomic mass (16.00 g/mol):

[tex]m_O=0.134molO*\frac{16.00gO}{1molO_2} \\\\m_O=2.14gO[/tex]

Best regards!

Answer:

159.69 g/mol

Explanation:

Here's the answer hope it helps

Answer:

3 AU

Explanation:

The distance from the Earth to the Sun is known as 1 AU, or 1 Astronomical Unit. If an asteroid is three times this distance, it is 3 AU away.

Answer:

3.5 mL

Explanation:

Let us represent lauric acid with the symbol LaCOOH and the anion as LaCOO-. The reaction between the anion and H2SO4 is;

LaCOO-(aq) +  H2SO4(aq) ----->  LaCOOH(aq) + HSO4-(aq)

Number of moles of LaCOO- = 2.75 g/200 g/mol = 0.014 moles

Since the mole ratio of the reaction is 1:1, then the amount of H2SO4 required is also 0.014 moles

Then;

n = CV

n = number of moles

C= concentration

V = volume

V = n/C

V = 0.014 moles/4.0 M

V= 3.5 * 10^-3 L

V = 3.5 mL

Answer:

4 g/cm³

Explanation:

Volume(V) = 60 cm³

mass (m) = 240 gm

density (d) = ?

We know density is defined as mass per unit volume so

d = m / v

= 240 / 60

= 4 g/cm³

Hope it will help

Answer:

2KMnO4 + 3 H2SO4 +10 [H] → K2SO4 + 2MnSO4 + 8H20. Nascent hydrogen reduces Ferric chloride( Yellowish brown) inot colorless ferrous salt

Explanation:

Answer: The average kinetic energy of the particles in a gas is proportional to the temperature of the gas. Because the mass of these particles is constant, the particles must move faster as the gas becomes warmer. The volume of the gas therefore becomes larger as the temperature of the gas increases.

Correct question: A tool used for vegetable strainer,it is essential for various tasks from cleaning vegetables to straining pasta or tin contents.

Answer: The tool is called COLANDER.

Explanation:

In the kitchen, there are different types of equipments and utensils which makes work easier and faster. Examples of such equipment/ utensils includes:

--> graters,

--> cutleries ( spoon, fork, knife)

--> colanders

--> Pots

--> Blenders

These utensils are made up of rubber, plastics, wood, ceramics and stainless steel.

A Colander is an important kitchen utensil, a type of strainer with perforated holes. The holes allows fluid to drain leaving behind the solid part. It is usually bowl - shaped. It helps in performing the following roles in the kitchen:

--> cleaning vegetables

--> straining of pasta

--> straining of tin contents

Colanders are usually made of stainless steel, plastics and ceramics.

Answer:

Human chorionic gonadotropin (HCG) injections are much safer to use with some mild side effects to treat issues of testicular atrophy. Human chorionic gonadotropin (HCG) injections would increase blood flow and enable the testes' produce testosterone, reduce the shrinkage of the testicles and it also aids in the production of sperm cells which has been initially impaired due to testicular atrophy.

Explanation:

Anabolic steroid is a drug that plays the role of testosterone.

Testicular atrophy is the shrinkage of the testicles caused by old age or infections. Once it occurs, it lowers the production of testosterone and sperm cells.

Trenbolone increases muscle building, aids lean fat deposition, reduces the production of testosterone, and could also lead to testicular atrophy.

Answer:

0.362 M

Explanation:

The reaction that takes place is:

First we convert the mass of AgCl (the precipitate) into moles, using its molar mass:

Now we convert AgCl moles into AgNO₃ moles:

Finally we calculate the molarity, after converting 88.11 mL to L:

Answer:

you have to shake the soda up

Answer:

Frying an egg

Answer:

all of them in my opinion

Explanation:

because they all change frying and egg the egg isn't liquid it's kind of solid now

burning a candle it was solid now it's liquid

Answer:

You don't find how many moles are in 1 gram, but rather you find how many grams are in 1 mole.

Na = 23

Cl = 34.5

Total = 57.5 g in 1 mole NaCl

3 moles NaCl x 57.5 g/mole = 172.5 grams in 3 mole

Explanation:

Answer: Periodic Trends

Zeff increases because the positive charge of the nucleus increases while the outermost electrons stay the same distance from the nucleus (filling the same orbital). In other words, going across a period, the outermost electrons are more tightly held. This explains the trend in atomic radius.

It refers to how strongly an atom attracts electrons from other atoms. Electronegativity is a measure of an atom's ability to draw electrons towards itself, or the ability of the nucleus to hold electrons tightly

hope this helps have a great day❤️

Explanation:

Answer:

That would be 4.17742995 * 10^13 :)

Explanation:

Answer:

B

Explanation:

All elements on both sides of the equation have the same amount of moles

Explanation:

I can't guess it properly

Answer:

170.68

Explanation:

PV=nRT or 22.4L for every mole of a gas at STP

Answer:

0.0977M is the concentration of the final solution

Explanation:

In a dilution process, to the original solution (Stock solution) you add more solvent in order to decrease its original concentration. To know how many times the solution was diluted you must find the dilution factor (Ratio between the initial and final volume). That is:

Intial Volume: 5.73mL

Final volume: 5.73mL + 20.26mL = 25.99mL

Dilution factor: 25.99mL / 5.73mL = 4.536 → 4.536 times the solution is diluted. The concentration of the diluted solution is:

0.443M / 4.536 =

The concentration of the solution is 0.099 M.

We have to use the dilution formula here;

C1V1 = C2V2

Where;

C1 = initial concentration

C2 = final concentration

V1 = initial volume

V2 = final volume

Now;

C2 = C1V1/V2

C2 =0.443 M × 5.73 mL / (5.73 mL  + 20.26 mL)

C2 = 0.099 M

Learn more about Beers law: https://brainly.com/question/7184331

Answer:

No

Explanation:

T6tgbv. 55678 r4fyx a