Which property among the following is best suitable for metalloids

1 Brittle and behaves like a non-metal

2 Have the property of metals and non-metals

3 Malleable and ductile

4 Conducts electricity and behaves like a metal

Answer:

Explanation:

The molecular formula for Guanylate is [tex]\mathbf{C_{10} H_{14} N_5O_8 P}[/tex]

This is calculated by the addition of the atomic weight of all the atoms taking part in the molecule.

i.e. (10 × C) +  (14 × H) + (5 × N) + ( 8 × O) + (1 × P)

= (10 × 12) +  (14 × 1) + (5 × 14) + ( 8 × 16) + (1 × 30)

= 120 + 14 + 70 + 128 + 30

= 362 g/mol

The diagram for the tautomers of hypoxanthine can be seen in the image attached below.

Dihydrouridine is available and can be seen in tRNAs and rRNAs. It is an exceptionally preserved and adjusted base. It is a pyrimidine nucleoside that is shaped by the expansion of two hydrogen atoms to uridine. By the expansion of two hydrogen atoms to uridine makes it completely soaked and no presence of any two-fold or double bond.  

Catalytic reduction of carbon-carbon double bonds in Dihydrouridine synthase occurs at positions 5 and 6 on the uridine base.  

Hence, 5 and 6 carbon particles inside the uracil moiety of this nucleotide have two hydrogens each connected to them.

When light travels from less dense air to denser glass or water, it slows down. Slowing down of a ray of light changes the direction of the ray of light.

Light that travels in a straight line in one direction is called a ray of light. When a group of light emanates from a source, it is called a beam of light. A beam of light is defined as the path of a photon or a group of photons traveling through a space appearing as a column of light.

There are three types of light rays. They are

Example of a beam is a beam of light with a pass from a laser or laser pointer. A beam of light is made up of particles called photons that carry specific amounts of energy. We cannot measure the length of a beam.

Thus, when light travels from less dense air to denser glass or water, it slows down. Slowing down of a ray of light changes the direction of the ray of light.

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Answer:

a) 0.099 L

b) 9.9

Explanation:

Now, given the equation for the decomposition of H2O2;

2H2O2(l) ------> 2H2O(l) + O2(g)

Mass of H2O2;

percent w/v concentration = mass/volume * 100

volume = 10.0-mL

percent w/v concentration = 3.0 percent

mass of  H2O2 = x

3 = x/ 10 * 100

30 = 100x

x = 30/100

x = 0.3 g of H2O2

Number of moles in  0.3 g of H2O2 = mass/ molar mass

Molar mass of H2O2 = 34.0147 g/mol

Number of moles in  0.3 g of H2O2 = 0.3g/34.0147 g/mol

= 0.0088 moles

From the reaction equation;

2 moles of H2O2 yields 1 mole of oxygen

0.0088 moles of H2O2 = 0.0088 * 1/2  = 0.0044 moles of oxygen

If 1 mole of oxygen occupies 22.4 L

0.0044 moles of oxygen occupies 0.0044 *  22.4/1

= 0.099 L

b) initial volume of the H2O2 solution = 10 * 10-3 L

Hence, ratio of the volume of O2 collected to the initial volume of the H2O2 solution = 0.099 L/10 * 10-3 L = 9.9

Answer:

I got you! I think the answer is D. Warmer air can hold more water vapor than colder air.

Explanation:

Although this statement is true, I could be incorrect, but it is unlikely. When warm air recieves more water vapor it expands while cold air becomes packed and unstable.

Hope this helps out, good luck! (¤﹏¤)

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Answer:

Explanation:

Answer:

1 mol

Explanation:

The mass of CoCl2 is 129.83. 130 divided by the mass is 1. This is to convert the mass given to mols that exist in the sample.

Answer:

1/2

Explanation:

Half of 6 is 3 so therefore it is a half.

I think it's ethane. It might be wrong tho.

trees... they bring life nd without trees, there wouldnt be life

Answer:

Given:

Compound C8H18

mass of compound- 546.23 gram

To find:

number of moles =?

Solution:

let's find out the molar mass of C8H18= 12×8+18×1 = 114 gram/mole

Number of moles= given mass/molar mass

=546.23/114

= 4.7818436487 moles.

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Answer:

owa owa owa owa

Explanation:

owa owa owa owa owa owa owa

Answer:

2,3-dimethylheptane.

CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂

           |        |

       CH₃    CH₃

Explanation:

Hello there!

In this case, according to the given instructions, it is possible to draw the organic chemical structure by connecting seven carbon atoms along the parent chain with two methyl substituents at the second and third carbon atoms; thus, the resulting structure is:

CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂

           |        |

       CH₃    CH₃

Furthermore, the name would be 2,3-dimethylheptane according to the IUPAC rules for nomenclature.

Best regards!

Answer: 1.825 moles of hydrogen gas are produced.

Explanation:

The balanced chemical equation is:

[tex]Mg(s)+2HCl(aq)\rightarrow H_2(g)+MgCl_2(aq)[/tex]  

According to stoichiometry :

2 moles of [tex]HCl[/tex] require = 1 mole of [tex]Mg[/tex]

Thus 3.65 moles of [tex]HCl[/tex] will require=[tex]\frac{1}{2}\times 3.65=1.825moles[/tex]  of [tex]Mg[/tex]

Thus [tex]HCl[/tex] is the limiting reagent as it limits the formation of product and [tex]Mg[/tex] is the excess reagent.

As 2 moles of [tex]HCl[/tex] give = 1 mole of [tex]H_2[/tex]

Thus 3.65 moles of [tex]HCl[/tex] give =[tex]\frac{1}{2}\times 3.65=1.825moles[/tex]  of [tex]H_2[/tex]

Thus 1.825 moles of hydrogen gas are produced.

Answer:

2365 g

Explanation:

The mass of CaCl₂ will be 110.98 grams, this can be calculated by using the molarity formula.

It is defined as the ratio of a number of moles of solute to the volume of solution in liters.

It is given by:

M= n/V

What information do we have?

V= 1.0 L

M= 1.0 M

Molar mass of CaCl₂  = 110.98g/mol

To find:

m=?

M= n/V

n= M/V

n= 1 mole

A Number of moles is the ratio of mass over the molar mass.

n = m/ M

1 mole= m / 110.98 g/mol

m= 110.98 grams

Thus, the mass of calcium chloride is 110.98 grams.

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The answer is C.

You're welcome!

Answer:

[IBr] = 0.049 M.

Explanation:

Hello there!

In this case, according to the balanced chemical reaction:

[tex]I_2+Br_2\rightarrow 2IBr[/tex]

It is possible to set up the following equilibrium expression:

[tex]K=\frac{[IBr]^2}{[I_2][Br_2]} =0.0110[/tex]

Whereas the the initial concentrations of both iodine and bromine are 0.50 M; and in terms of [tex]x[/tex] (reaction extent) would be:

[tex]0.0110=\frac{(2x)^2}{(0.50-x)^2}[/tex]

Which can be solved for [tex]x[/tex] to obtain two possible results:

[tex]x_1=-0.0277M\\\\x_2=0.0245M[/tex]

Whereas the correct result is 0.0245 M since negative results does not make any sense. Thus, the concentration of the product turns out:

[tex][IBr]=2x=2*0.0249M=0.049M[/tex]

Regards!

Answer:

A

Explanation:

It is so because the low air pressure create vacuum and the air from high pressure area move toward the low air pressure.

Answer:

C. Sebum

Explanation:

C. Sebum

Answer:

Explanation:

Water is capable of dissolving a variety of different substances, which is why it is such a good solvent. And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This allows the water molecule to become attracted to many other different types of molecules.

Answer:

See explanation.

Explanation:

Hello!

In this case, according to the thermodynamic definition of the Gibbs free energy:

[tex]\Delta G=\Delta H-T\Delta S[/tex]

In the scenario by which G>0 (nonspontaneous) it would be possible for reaction to have a G<0 (spontaneous) if:

- If H>0 and S>0, then the temperature should be increased until the process was entropy-driven for it to be possible.

- If H> and S<0, then it'd be impossible to have an spontaneous process.

- If H<0 and S>0 then the process was not spontaneous.

- If H<0 and S<0 it is possible if the temperature is not high enough to ensure the process is enthalpy-driven.

Best regards!

Sorry so what I think u should do is ask your teach or look up on how to do this problem

Answer:

pH = 3.34

Explanation:

We can calculate the pH using Henderson-Hasselbach's equation:

for HCOOH, pKa = 3.75.

We can calculate [HCOO⁻] and [HCOOH] using the given number of moles for each one and the final volume:

Then we proceed to calculate the pH:

The pH of the resulting solution is 3.34.

Since  

Final Volume = 44.12 mL + 250 mL = 294 mL

Now

= 294 mL / 1000

= 0.294 L

Now

[HCOO⁻] = 0.036 mol / 0.294 L = 0.122 M

[HCOOH] = 0.091 mol / 0.294 L = 0.310 M

So, the pH should be

= 3.75 + log0.122/0.310

= 3.34

hence, The pH of the resulting solution is 3.34.

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Answer:

Which set of orbitals are degenerate?

Degenerate is used in quantum mechanics to mean 'of equal energy. ' It usually refers to electron energy levels or sublevels. For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy, as shown in the diagram.

Explanation:

Answer:

Electron orbitals having the same energy levels are called degenerate orbitals, For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy.

answer: white fur works as a camouflage against the white snow, allowing polar bears an advantage when hunting for food and hiding from predators

Answer:

False.

Explanation:

False because there's no chemicals making change. its a physical change

Answer:

A. Water particles barely move forward; they move in a circular pattern.

Answer:

For k-12 its:

Explanation:

Water particles barely move forward; they move in a circular pattern.

^^

Answer: Echinoderms usually have five appendages (arms or rays), but there are some exceptions. Radial symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out of it (think of a starfish).

Explanation:

Answer:

uesssf

Explanation:

hnjhj

Answer:

The correct answer is -

1.  a) The bubbles will shrink, some may vanish.

2. a) Can A will make a louder and stronger fizz than can B.

Explanation:

In the first question, it is given that the bottle is not opened and therefore, squeezing the bottle filled with a carbonated drink will increase the pressure on the carbonated liquid which forces the bubbles to dissolve or displace or vanish as it moves to empty space.

Thus, the correct answer would be - The bubbles will shrink, some may vanish

In the second question, there are two different conditions for two different unopened cans of carbonated water that are different temperatures one at the garage with higher temperature and one in the fridge at low temperature. As it is known that higher the temperature less will be solubility of gas in liquid so gas in can A will be less soluble which means it has more gas and it will make louder and stronger fizz than B which was stored at low temperature.

thus, the correct answer would be - Can A will make a louder and stronger fizz than can B.

Answer:

Explanation:What is the demand factor for three commercial ranges?