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Answer:

900

Explanation:

The substance can form a coordinate covalent bond with a hydrogen ion is He. Hence, option B is correct.

An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs.

Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.

Covalent bonds were first described in 1939. The word "covalent bond" is derived from the prefix co-, which means jointly, associated in action, partnered to a lesser extent, etc. The hydrogen atoms share the two electrons through covalent bonding since the prefix co- implies jointly, associated in action, etc.

Thus, option B is correct.

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Answer:

Its response to this question is as follows:

Explanation:

Please find in the attachment file the complete query and the answer file.

Explanation:

the answer will be 98.4 kJ

As per concept of enthalpy of fusion , 98,397 joules of energy  are required to freeze 10 g of water  at 0°C.

Enthalpy of fusion is defined as the enthalpy change which results from when  a substance changes its state from solid to  a liquid at a constant pressure.Heat of solidification is opposite of enthalpy of fusion.During fusion  there is a phase transition which takes place, from liquid to solid.

The temperature at which the fusion takes place is called as the fusion temperature. This enthalpy is accompanied without any change in temperature.

Enthalpy of fusion  of water=333.55 J/g  . This value is for 1 g of water as per definition,hence for 10 g water enthalpy of fusion is 10×333.55=3335.5 J.

Hence, 3335.5 joules are required for freezing 10 g sample.

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Answer:

[tex]V_2=367.06\ cm^3[/tex]

Explanation:

Charles law states that volume of the gas is directly proportional to the temperature i.e.

[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

We ave,

V₁ = 300 cm³

T₁ = 40°C = 40 + 273.15 = 313.15  K

T₂ = 110°C = 110 + 273.15 = 383.15 K

Let V₂ be the new volume.

[tex]V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{300\times 383.15 }{313.15}\\\\V_2=367.06\ cm^3[/tex]

So, the new volume of the balloon is [tex]367.06\ cm^3[/tex].

Answer:

You solve that dividing beach term by -8 and simplifying which for this answers will give you r=-30

Explanation:

Pls correct me if I’m wrong.

Hope this helps :)

Answer:

Uhmm i think i dont know the sent r 6un Dury r in eyeing in d7ue

Answer:

This is an example of Avogadro equation

Answer:

d

Explanation:

its d because a beta particle has a negative charge

In the case when there is the  negatively charged beta particle so the number of nucleons decreased by one.

In terms of chemistry and physics, a nucleon could be treated as the proton or neutron also it considered as the component of the atomic nucleus. Here the no of nucleons in the nucleus should represent the atom mass number.

So based on this, we can conclude that In the case when there is the  negatively charged beta particle so the number of nucleons decreased by one.

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Explanation:

CH4 + 2 O2 -> CO2 +2 H2O

4 H3N+3 O2 -> 6H2O + 2 N2

Answer:

5.0% by mass

Explanation:

Percent by mass is 100 times the ratio between the mass of solute (Magnesium citrate) in the mass of solution.

Mass of Magnesium citrate -Molar mass: 214.41g/mol-:

0.1mol * (214.41g/mol) = 21.441g

Assuming the volume of the solution is just due the solvent -Water-, the mass of water is 428g.

Percent by mass is:

21.441g / 428g * 100 =

Answer:

Genetic Factors: Bad tasting leaves, plant structure, types of stems, reproduction

Environmental: insects, pollution, terrain, soil conditions, pH of soil, fire, flood, heat wave, temperature, lack of air, drought,

Explanation:

Genetic factors are within the organism, the plant's own make-up. Environmental factors are conditions on the outside, in the soil, the atmosphere, and other organisms in the habitat.

Answer:

what????????????????????

Answer:

1. ?

Explanation:

I'm not really sure, but knowing that gas particles are constantly moving makes me think that an ideal gas sample would have constantly moving particles. also with 2., gas has a lot of energy and their particles rarely come into contact with each other (they're even thought of as more independent than as one substance); with 3., there isn't much of a force between gas particles, which is why they're able to stay in that state of matter; and with 4., well, volume is important lol.

But the kinetic molecular theory states that games are composed of a large number of particles that behave like hard, spherical objects in a state of constant, random motion, so I'm sticking with the answer being number 1.

Answer:

120 gram sample of a radioactive element, how many grams of that element will be left after 3 half-lives have passed? If you have a 300

Explanation:

Hope this helps!

Answer:

[tex]1.936\times 10^{-18}\ \text{J}[/tex]

Explanation:

[tex]R_h[/tex] = Rydberg constant = [tex]2.178\times 10^{-18}\ \text{J}[/tex]

[tex]n_i[/tex] = Initial shell = 3

[tex]n_f[/tex] = Final shell = 1

We have the relation

[tex]\Delta E=R_h(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})\\\Rightarrow \Delta E=2.178\times 10^{-18}(\dfrac{1}{1^2}-\dfrac{1}{3^2})\\\Rightarrow \Delta E=1.936\times 10^{-18}\ \text{J}[/tex]

The energy of the photon emitted here is [tex]1.936\times 10^{-18}\ \text{J}[/tex].

Answer:

2H2O2 --> 2H2O + O2

Explanation:

We know that hydrogen peroxide is H2O2

Decomposition means that you break down so break down H2O2

H2O2 --> H2O + O2

There are three oxygens so we have to balance

2H2O2 --> 2H2O + O2

Answer:

False

Explanation:

Answer:thy have needle like leave

Explanation:

Answer:

dzfz d vfg

Explanation:

bnnbvmyjggbbdfg

Answer:

Answer is 5000

Explanation:

5000 is your answer

Answer:

what the other person says their wright

Explanation:

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........false.........

Answer:

II. The ball is broken into two separate halve. The ball is still a ball. It is just in a different form.

IV. This one is also correct because it is only changing the physical state of the ball. The ball is still a ball.

Answer:

1.) Are tightly coiled bundles of DNA

2.) Carry many genes

3.) Are found inside the nucleus of eukaryote

4.) Can be used to diagnose genetic disorders

Explanation:

A chromosome is a thread-like structure made up of DNA. The chromosomes are made of DNA which are tightly coiled around protein.

Chromosomes carry hundreds and thousands of genes. The number of genes in a cell outnumbers the number of chromosomes.

In eukaryotic cells, all the chromosomes are found inside the nucleus of eukaryote.

The chromosomes and DNA can be examined so as to diagnose genetic disorders.

Answer:

Option B. The molecules that make up water can more easily slide past one another than the molecules that make up a olive oil.

The molecules that make up water can more easily slide past one another than the molecules that make up olive oil. Hence, option B is correct.

Viscosity is a term used to describe FLUIDS, which includes liquids and gases. Viscosity refers to the ability of a gas or liquid to resist flow.

Olive oil has a higher viscosity than water because it is a much larger molecule than water with larger dispersion forces.

Hence, option B is correct.

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Mass of KCl= 19.57 g

Given

12.6 g of Oxygen

Required

mass of KCl

Solution

Reaction

2KClO3 ⇒ 2KCl + 3O2

mol O2 :

= mass : MW

= 12.6 : 32 g/mol

= 0.39375

From the equation, mol KCl :

= 2/3 x mol O2

= 2/3 x 0.39375

=0.2625

Mass KCl :

= mol x MW

= 0.2625 x 74,5513 g/mol

= 19.57 g

Answer:

20.46 moles

Explanation:

1 mole of NH3 contains 17gm of NH3

so 347.89 gm of ammonia is in,

347.89/17 moles

=20.46 moles

NOTE. There should be ammonia instead of ammonium in question because ammonium is an ion not a compound.

Answer:

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Explanation:

SUMMURY

Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. ... Ionizing radiation, which includes ultraviolet radiation, radon, x-rays, and gamma rays.

Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

DIFFENITION :

radiation

1a: the action or process of radiating

b: the process of emitting radiant energy in the form of waves or particles

c(1): the combined processes of emission, transmission, and absorption of radiant energy

(2): the transfer of heat by radiation

— compare CONDUCTION, CONVECTION

2a: something that is radiated

b: energy radiated in the form of waves or particles

3: radial arrangement

4: ADAPTIVE RADIATION