whats the awnser? i cant find it and i need it asap! anyone i will crown you the brainleist!

Answer:

Van der waals forces

Explanation:

I just know

Answer:

H

Explanation:

Answer:

1. Chloride ion

2. Metal ion

3. The same as a sample with the identical metal ion.

Explanation: I Just took the quiz on Edge 2021

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{8.30 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{8.3}{6.02} \\ = 1.3787...[/tex]

We have the final answer as

Hope this helps you

Answer:

The sentence that best supports the statement above is (C) We live in a world where knowledge and uncertainty can and do coexist

Answer:

D. section of DNA that codes for a specific trait

Explanation:

Genes are sections of the DNA that codes for a specific trait. They are simply defined as the basic physical and functional unit of hereditary.

The new volume : 0.07 L

Boyle's Law  

At a constant temperature, the gas volume is inversely proportional to the pressure applied  

[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]

P₁=1 atm

V₁=0.39 L

P₂=5.6 atm

[tex]\tt V_2=\dfrac{P_1.V_1}{P_2}\\\\V_2=\dfrac{1\times 0.39}{5.6}\\\\v_2=\boxed{\bold{0.07~L}}[/tex]

Answer:

instrumental music is used in festivals, rituals, etc.

Explanation:

Answer:

translational, rotational, and oscillatory.

Explanation:

Answer:

C stays the same ez

Explanation:

Answer:

no the mass will not change

Explanation:

Mass of water : 29.904 g

Heat can be formulated

Q=m.c.Δt

Q, heat, J

m,mass, g

c, specific heat, j/g C

Δt,temperature, C

[tex]\tt 38-10=28^oC[/tex]

[tex]\tt m=\dfrac{Q}{c.\Delta t}\\\\m=\dfrac{3500}{4.18\times 28}\\\\m=29.904~g[/tex]

Answer:

IM VERY SORRY HAVE A GOOD DAY\\

Explanation:

Answer:

199920J

Explanation:

Given parameters:

Mass of steam  = 85g

Unknown:

Heat released when the liquid is condensed  = ?

Solution:

The heat released by the substance is given as;

         H  = mL

H is the heat released

m is the mass

L is the latent heat of steam  = 2352J/g

Heat released  = 85 x 2352  = 199920J

Answer:

the pH of the solution after 20 mL HCl was added is 1.12

Option d) 1.12 is the correct answer

Explanation:

Firstly; number of mmols of NH₃ before addition of HCl = M x V = 0.25 x 20 = 5

Also number of mmols pf HCl added = M x V = 0.40 x 20 = 8

Number of mmols of NH₄Cl formed

= number of mmols of NH3 before addition of HCl = 5

Number of mmoles of HCl remained = 8 – 5 = 3

Therefore Total volume of solution = 20 + 20 = 40 mL

Molarity of HCl = 3 / 40 = 0.075 M

Molarity of NH₄Cl = 5 / 40 = 0.125 M

Therefore

Ka x Kb = 10⁻¹⁴

Ka x 1.8 x 10⁻⁵ = 10⁻¹⁴

Ka (NH₄Cl) = 5.56 x 10⁻¹⁰

[H+] from HCl = 0.075 M

[H+] from NH₄Cl = (Ka x C)^1/2

= (5.56 x 10⁻¹⁰ x 0.125)^1/2 = 8.34 x 10⁻⁶

Hence, [H+] from NH₄Cl is negligible.

pH = -log 0.075

pH = 1.12

Therefore the pH of the solution after 20 mL HCl was added is 1.12

Option d) 1.12 is the correct answer

Answer:

1. synthesis

2. single displacement

3.double displacement

4.double displacement

Explanation:

1. here Mangananes (iv) oxide further reacts with oxygen to form Manganese (iii) oxide , two reactants making one product .

2. Carbon replaces aluminium from aluminium oxide to make pure aluminium and carbon monoxide and carbon dioxide.

3. sodium replaces barium to make sodium acetate , barium replaces sodium to make barium carbonate ( precipitate )

4. potassium replaces Hydrogen to produce potassium bromide, while hydrogen and hydroxide ions combine to make water .

Answer:

Salt is cubed, crystal like, grainy, and shiny

Explanation:

Answer:

salt is basic in nature

it is of diffrent type

they are of 4 type

1 is sodium hydroxide

2 is bleaching powder

3 is baking soda

4 is washing soda

Answer:

Explanation:

glucose-1-phosphate  →  glucose-6-phosphate,  ΔGo = -7.28 kJ/mol

fructose-6-phosphate → glucose-6-phosphate,    ΔGo = -1.67 kJ/mol

subtracting the equation

glucose-1-phosphate - fructose-6-phosphate  = 0 , ΔGo =  -7.28  - ( -1.67 ) kJ / mol

glucose-1-phosphate  = fructose-6-phosphate      ΔGo  = - 5.61 kJ / mol

- ΔGo = RT lnK

5.61 x 10³ = 8.31 x 298 x lnK

lnK = 2.265

K = 9.63 .

Taking into account the constitution of an atom, an atom is neutral because it has the same number of protons as it has electrons.

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

Every atom consists of a nucleus in which neutrons and protons meet and energy levels where electrons are located.

The neutron is an electrically neutral subatomic particle, while the proton has a positive electrical charge. Electrons have a negative charge, move around the nucleus at different energy levels and are attracted to protons, positive in the atom through electromagnetic force.

An atom is considered electrically neutral when it has the same number of positive and negative charges. That is, an electrically neutral atom has the same number of protons (with a positive charge) and electrons (with a negative charge).

In summary, an atom is neutral because it has the same number of protons as it has electrons.

Learn more about atom electrically neutral:

brainly.com/question/1814899

brainly.com/question/2449569

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Answer:

Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day.

Explanation:

Answer:

1.828 g

Explanation:

The half-reaction is:

First we calculate the coulombs:

Then we calculate the number of lithium moles, using Faraday's constant:

Finally we convert moles to grams:

Answer:

The orbitals 3f and 2d cannot exist.

Explanation:

Hello!

In this case, considering the attached picture in which you find each energy level with the corresponding number of subshells, it is possible to infer level one has s subshell only, level 2 s and p, level 3 has s, p and d and from level 4 to 7 have s, p, d f, therefore, the orbitals 3f and 2d cannot exist.

Best regards!

Answer:

Land that gains weight can rise slowly.

Explanation:

:D

Answer:

it B 114 on edge 2020

Explanation:

UwU

Answer:

it B 114

Explanation:

Answer:

C

Explanation:

I just think it is the right answer :) Sorry if I am wrong..

Answer:

c

Explanation:

Answer:

45 m/s north

Explanation:

Edge 2020

Answer: (B) 45 m/s north

Explanation: right on edge 2020 (so basically the same reason as person above)

Answer:

5

Explanation:

Answer:

the volume delivered by the pipette = 22.32 mL

Explanation:

To calculate this, let us first note that the density of water relates it weight and its volume (density = mass ÷ volume), hence we are going to use density to determine the volume.

Density of water = mass/volume = 0.997 g/ mL

mass = 22.25g

Density = 0.997g/mL

volume = ?

[tex]density = \frac{mass}{volume}\\\therefore volume = \frac{mass}{density}\\volume = \frac{22.25}{0.997}\\volume = 22.32\ mL[/tex]

∴ the volume delivered by the pipette = 22.32 mL

Please note that this calculation is based on the fact that the weight of the empty flask has been determined and canceled out.