precipitate the reactants in achemical reaction. II. TRUE or FALSE. Write TRUE if the statement is correct and FALSE if it is not.
21. Sugar is very soluble in a nonpolar liquid like mineral oil.
22. Acetone has a higher vapour pressure than ethanol.
23. In a water molecule, the hydrogen is partially positive, while the oxygen is partially negative.
24. The stability of the DNA structure arises from the H-bonding of base pairs.
25. Components of electronic devices include nonpolar substanceslike transient suppression diodes, metalloids and semimetals.
26. Vapour pressure rises as the strength of IMFA decreases.
27. Boiling point, melting point, viscosity ang surface tension increases as the strength of IMFA decreases.
28. lon-dipole interaction exists between ions and a nonpolar compound. 29. Hydrogen bonding occurs with polar molecules bonded with highly- electronegative atoms.
30. Water is a polar molecule, thus it is miscible with nonpolarmolecule like oil. ​

When a chemical energy is converted to hear during a chemical reaction, the total energy of the system remain constant.

Law of conservation of energy state that the today energy interacting with bodies in a isolated system remain constant

the Law of Conservation state that the total energy in a system remain unchanged, and that oftentimes a chemical reaction will absorb or release energy in the form of heat, light, or both.

Therefore, The total energy of the system remain constant.

Learn more about law of conservation of energy here.

https://brainly.com/question/166559

Answer:

The simplest Organic compounds are made up of only Carbon and Hydrogen atoms only. Compounds of Carbon and Hydrogen only are called Hydrocarbons.

Explanation:

The kind of wave that is formed when a transverse wave and a longitudinal wave combine is surface wave.

A surface wave is a mechanical type of wave that propagates along the boundary between two different media.

When a mechanical wave travels at the interface between two media, a transverse wave and a longitudinal wave can combine to form a surface wave.

An example can be seen in ocean waves.

Thus, the kind of wave that is formed when a transverse wave and a longitudinal wave combine is surface wave.

Learn more about surface waves here: https://brainly.com/question/11750134

Answer:

BIKE riding, Watching yt, Hanging with friends, Food,Dogs

Answer : 12

It has a +2

Take it out from 14

Answer:

Fe: 23.1%

N: 17.4%

O: 59.5%

Explanation:

You take the grams that each weigh on the periodic table and add it all up. Afterward you create fractions of each over the whole. (Example: Fe/Fe+N+O) then you divide and turn that decimal into a percentage.

Answer:

No. They typically are not identical.

Explanation:

Atom's electrons can be in different states

Answer:

NO

Explanation:

Atoms are like dna and cells they all have a different job even if they are the same element

Answer:

bottom right top left fig

Weak base: [OH⁻] = √Kb.C

pKb = 4.2

[tex]\tt Kb=10^{-4.2}[/tex]

c = concentration

MM Amphetamine (C9H13N) = 135.21 g/mol

c = 215 mg/L = (0.215 g : 135,21 g/mol) / L = 0.00159 mol/L = 1.59  x 10⁻³ mol/L

[tex]\tt [OH^-]=\sqrt{10^{-4.2}\times 1.59\times 10^{-3}}=3.17\times 10^{-4}[/tex]

pOH = 4 - log 3.17

pH = 14 - (4 - log 3.17)

pH = 10 + log 3.17 = 10.50

The Lewis structures in which there are no formal charges is the most stable. Hence, structure (b) is the  more stable form of FNO2.

The question is incomplete but I will try to answer you as much as I can. Now the equation is missing hence we can't numerically caculate the enthalpy chnage of the reaction from bond energies. However, we can do this using the formula; Σbond energy of reactants - bond energy of products.

Concerning the Lewis structures of FNO2, the most stable structure is structure (b) as shown in the image attached where the atoms have no formal charges.

Learn more about Lewis structure:https://brainly.com/question/4144781

Answer:

0.1443194637888042 moles

Explanation:

Hope This Helps

Have A Great Day

~Zero~

Answer:false you are welcome

Explanation:

Answer: False I hope this helpful please mark me brainlist

Explanation:

Kinetic friction is the friction acting upon a moving object. It would be the frictional force against you if you pulled a box across a table.Static friction is the frictional force needed to overcome to get an object at rest into motion.

Fruits don't taste sour because of less hydrogen ions and less acid.

Scientists discovered that pulp from sour fruit contains more hydrogen ions, which leads sour taste while on the other hand, the sweeter fruit-like pineapples has pulp that contains fewer hydrogen ions, leading to less acidic and sweeter in taste.

So we can conclude that fruits don't taste sour because of less hydrogen ions and less acid.

Learn more about sour here: https://brainly.com/question/412863

Based on their nature of waves, seismic waves changes speed as it moves through different materials.

Seismic waves are the waves that are produced and travel through the earth crust during an earthquake.

Seismic waves are often described as elastic waves which is the energy caused by a sudden breaking of rock within the earth's crust.

Seismic waves can travel at different speeds through different types of rock, bouncing back or changing direction.

Therefore, the correct statement which describes a seismic wave during an earthquake is that the wave changes speed as it moves through different materials.

Learn more about seismic waves at: https://brainly.com/question/8553835

Answer/Explanation:

With oxygen, it is what you breathe in so obviously, it is going to move around into your body. But with carbon dioxide, it is what you breathe out. When you breathe in, your body takes in the oxygen and the releases the carbon dioxide. Carbon dioxide is what plants actually consume, while they release oxygen.

I hope this helps!

-No one

The benzene molecule is flat and planar. As a result of this planarity, the substituent is also in the plane of molecule and do not show any directionality.

The benzene molecule is a flat and planar molecule owing to the fact that all the bond lengths and bond angles in the molecules are the same. This results from resonance in the molecule.

Hence, owing to the planarity of the molecule, the substituent is also in the plane of molecule and do not show any directionality.

Learn more about benzene: https://brainly.com/question/7284916

Answer:

i want to say it's

Explanation:

(B) but i don't know but did you ever figure out the anwser?

Answer:

Coniferous forest biome has more precipitation to the Deciduous forest biome.

Explanation:

Answer:

D . They are found in moist environments.

Explanation:

Nonvascular plants do not have a xylem or phloem, roots, stems, or leaves. Because these plants lack water-conducting tissues, they fail to achieve the structural complexity and size of most vascular plants and have evolved in habitats which allow their survival and reproduction.

The plant body that is most obvious in non-vascular plants are the the gametophyte generation. The gametophte gemeration is haploid.

The non-vascular plants grow in moist environments. It is due to lack of vascular tissue that requires to maintain close contact with water to prevent desiccation. Nonvascular plants are plants that do not have any special internal pipelines or channels to carry water and nutrients. Instead, nonvascular plants absorb water and minerals directly through their leaflike scales. Nonvascular plants are usually found growing close to the ground in damp, moist places. Non-vascular plants thrive in damp conditions since they don't need to rely on roots to acquire enough water.

For a gas at 4.5 atm of pressure, the solubility of a gas is 9.5 g/L.

How much gas, in grams, is mathematically given as

s2=8.3782grams

Generally, the equation for the   is mathematically given as

Si /S2 √P1/√P2

Therefore

[tex]s2=9.5*\sqrt{3.5}/\sqrt{4.5}[/tex]

s2=8.3782g

In conclusion. The solubility is

s2=8.3782g

Read more about  Solubility

https://brainly.com/question/23946616

Based on the calculations through the ICE table, the pH of the buffer solution is equal to 3.30.

Given the following data:

First of all, we would write the properly balanced chemical equation for this chemical reaction:

                                     [tex]HNO_2(aq)\rightleftharpoons H^{2+} (aq)+ KNO_2^{-}(aq)[/tex]

Initial cond.                       0.55M              0          0.75M

    [tex]\Delta C[/tex]                                   -x                   x               x

At equib.                           0.55M - x         0 + x      0.75M + x

From the ICE table, the Ka for this chemical reaction is given by:

[tex]K_{a}=\frac{[H^+][NO_2^+]}{HNO_2} \\\\H^+ = K_{a}\frac{[HNO_2]}{[NO_2^+]} \\\\H^+ = 6.8 \times 10^{-4} \times \frac{0.55}{0.75} \\\\H^+ = 6.8 \times 10^{-4} \times 0.733\\\\H^+ = 4.98 \times 10^{-4} \;M[/tex]

Now, we can calculate the pH of the buffer solution:

[tex]pH=-log[H^+]\\\\pH=-log[4.98 \times 10^{-4}]\\\\pH=-(-3.30)[/tex]

pH = 3.30.

Alternatively, you can calculate the pH of this buffer solution by applying Henderson-Hasselbalch equation:

[tex]pH =pka+ log_{10} \frac{A^-}{HA}[/tex]

Where:

Read more on concentration here: https://brainly.com/question/3006391

non-polar molecule because the chemical formula is in a tetrahedral form(O4) and the (Si) is in the centre. I hope this will help you

The statement 'when charges pass through the bulb, light is produced' best describes how the charges move through the bulb.

An electrical charge is a type of positive or negative charge of the particles that move in a conductor.

At the atomic level, protons are positively charged particles, electrons are negative, and neutrons do not have a charge.

The electrical charges depend on the charge's initial time, the final time, and the net outward current.

Learn more about electrical charges here:

https://brainly.com/question/2373424

Answer:

c

Explanation:

mass is like matter it cant be created or destroyed so mass stays the same.

Answer:

C) It is equal to the total mass of the products.

Explanation:

The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products.

- profparis

Answer:

answer in the picture above

Answer:

Sulfur (S) has 3 shells.

Explanation:

The first shell can have up to 2 electrons. The second and third shells have up to 8 electrons as well. This makes the maximum of each shell to be 2, 10, and 18. Sulfur has 16 electrons so it has more than the second shell but less than the third shell. So, it will have 3 shells with a valence of 2 since it is missing 2 electrons to create a full shell.

Answer: True

Explanation:

[tex]\mathrm{The\ balanced \ chemical \ equation\ is\ :}\\$2 \mathrm{Na}{(s)}+\mathrm{Cl}_{2}(g) \rightarrow 2 \mathrm{NaCl}(s)[/tex]

For Na

[tex]\\$Given mass $=20.4 \mathrm{~g}$ \ \ Molecular mass $=23 \mathrm{~g}\ \ $Number of moles $=\frac{\text { Given mass }}{\text { Molecular mass }}$$$\begin{aligned}&=\frac{20.4}{23} \\&=0.887 \text { moles }\end{aligned}$$Stoichiometric ratio of $\mathrm{Na}$ is same as that of $\mathrm{NaCl}$ i.e., $1: 1$.$\therefore$ Moles of $\mathrm{NaCl}=0.887$ motes[/tex]

For NaCl

[tex]$$\\\begin{aligned}\text { Molecular mass } &=23+35.5 \\&=58.5 \mathrm{~g}\end{aligned}$$[/tex]

[tex]\begin{aligned}\\& $\therefore$ Mass of $\mathrm{NaCl}$ produced will be=\text { No.of moles } \times \text { Molecular mass } \\&=0.887 \times 58.5 \\&=51.9 \\&\simeq 52 \mathrm{~g} \quad\end{aligned}$$[/tex]

Therefore, it is true that when 20.4g of sodium metal are mixed with chlorine gas, 52.0 g of sodium chloride is produced

Explanation:

The answer: True

I explained the answer to your question in the submitted photo