What is the speed of the green line if the distance it covered is 4 m in a time of one second

40m/s

4m/s

2m/s

Answer:

CO (carbon monoxide)

Explanation:

Answer:

A photons is a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.

Explanation:

Light consists of packets of energy (photons) that can only interact with the atoms and molecules of matter by being absorbed or emitted in discrete units. ... Photons carry momentum and energy like particles, but they also have a frequency and a wavelength like a sinusoidal wave. Thanks to photons we know that all quantum particles have both the properties of waves and particles. I hope it helps✌️

Answer:

I think one significant figure??

Answer:

42.39, 64.06

Explanation:

Formula Weight can be calculated by adding the atomic mass of the elements in the formula.

LiCl

AM for Li is 6.94 amu, AM for Cl is 35.45 amu

[tex](6.94)+(35.45)=42.39[/tex]

SO₂

AM for S is 32.06 amu, AM for O is 16 amu

[tex](32.06)+2(16.00)=64.06[/tex]

Answer:

Endothermic is something that needs heat added into it, while exoteric gives heat off

Explanation:

1. Endo(Melting ice)

2. Endo(heat enters the system)

3. Exothermic(making ice)

4. Endothermic( liquid to gas)

5. Exothermic(campfire)

6. exothermic(gas to a liquid)

7. Exothermic (the flame of a candle)

8. Exothermic (heat leaves the system)

9. I don’t know if photosynthesis is exo or endothermic

Answer:

In a solution containing ammonia solution and ammonium chloride, ammonia hydrolyses in water to produce hydroxyl ions.

NH3 +H2O → NH4+ + OH-

Ammonium chloride ionises in the solution to produce ammonium ions and chloride ions where the ammonium ions undergo hydrolysis to produce more ammonia solution.

[tex]NH _{4} Cl→NH _{4} {}^{ + } + Cl {}^{ - } [/tex]

Answer:

Option A; V =  2.92 L

Explanation:

If we assume a lot of things, like:

The gas is an ideal gas.

The temperature is constant.

The gas does not interchange mass with the environment.

Then we have the relation:

P*V = n*R*T = constant.

Where:

P = pressure

V = volume

n = number of moles

R = constant of the ideal gas

T = temperature.

We know that when P = 0.55 atm, the volume is 5.31 L

Then:

(0.55 atm)*(5.31 L) = constant

Now, when the gas is at standard pressure ( P = 1 atm)

We still have the relation:

P*V = constant = (0.55 atm)*(5.31 L)

(1 atm)*V = (0.55 atm)*(5.31 L)

Now we only need to solve this for V.

V = (0.55 atm/ 1 atm)*(5.31 L) = 2.92 L

V = 2.92 L

Then the correct option is A.

Answer:

The pressure will increase linearly if you increase the moles/molecules of gas

Explanation:

Answer:

B.

Explanation:

There are the same amount of black circles in the reactant and product. There are also the same amount of white circles in the product and reactant.

Answer:

Explanation:

The task in this question is to match the right procedure to its purpose. It explains the procedure for the preparation of Fischer Esterification. Fischer Esterification Mechanism should incorporate the ceaseless expulsion of water from the framework or the use of a huge amount of excess alcohol since the general reaction is reversible. Fischer Esterification act as an organic reaction that is utilized to change over carboxylic acids within the sight of excess alcohol and a solid corrosive catalyst (acid) to give an ester as the eventual outcome.

Procedure                                                                Purpose

[tex]\text{Flat bottomed flask transfer}\\ \\ \text{ heat in an uneven fashion and } \\ \\ \text{ may fracture if heated strongly}[/tex]                     [tex]\text{The reagents were added to a} \\ \\ \text{round bottom flask prior to the }\\ \\ \text{reaction being heated under reflux}[/tex]

[tex]\text{Methanol which used as a reagent} \\ \\ \text{and solvent is flammable}[/tex]                 [tex]\text{The solution of benzoic acid and }\\ \\ \text{methanol was heated on steam bath}[/tex]

[tex]\text{The unreacted carboxylic acid was} \\ \\ \text{neutralized under mild conditions}[/tex]               [tex]\text{The reaction mixture was washed} \\ \\ \text{ with sodium bicarbonate solution}[/tex]

[tex]\text{Water needs to be removed before the} \\ \\ \text{ liquid ester product was collected}[/tex]          [tex]\text{Magnesium sulphate is added to the} \\ \\ \text{ dichloromethane layer before} \\ \\ \text{ the solvent is distilled off}[/tex]

Answer:

Lipids

Explanation:

Lipids are a class of macromolecules that are nonpolar and hydrophobic in nature. Major types include fats and oils, waxes, phospholipids, and steroids.

Hope this helps!

Answer:

P7F8

Explanation:

correct formula isP7F8

Answer:

When a solid is heated the particles gain energy and start to vibrate faster and faster. ... At this point the solid is melting to form a liquid. The particles in the liquid are the same as in the solid but they have more energy.

Explanation:

sana maka help

centimetres

Explanation:

centimetres

Answer:

D. Centimeter is used when measuring the length of a paperclip

Answer:

5kg

Explanation:

Use the law: F=MA

F= force which is newton

M= mass which is kg

A= acceleration which is [tex]m/s^{2}[/tex]

Answer: beautiful

Explanation:

Answer:

2.5 M H2SO4

Explanation:

2.5 mol / 1.00 L = molarity of 2.5

An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?

The answer is 553

Answer:

553

Explanation:i did this question today and it was right!

Answer:

hi thxs for the points now bye

Answer:

Nitrogen-fixing bacteria in the soil and within the root nodules of some plants convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.

Explanation:

Hope It Help

Answer:c

Explanation:

The healthy lion population in the African savanna has been important as the decrease in the population of lions results in the increase in the increased population of zebras and antelopes and thereby the increased overgrazing. Thus, option C is correct.

In an ecosystem, the biotic components have been arranged in the pyramidical order that has been able to maintain a healthy ecosystem.

The increase or decrease in the level of the ecosystem results in the disturbed ecosystem and thereby the biodiversity. The African savanna has been the forest ecosystem. It has been photosynthetic plants, followed by primary, secondary, and tertiary consumers.

The lion has been the secondary consumer in the forest system. The lions have been able to consume the primary consumers and maintain the balance in the ecosystem.

However, with the decrease in the lion population in the ecosystem, there has been a proportional increase in the population of the primary consumers such as zebras, and antelopes.

The increase in primary consumers results in overgrazing and thereby the starvation of other primary consumers with a decrease in the producers.

Thus, a decrease in the lion population results in disturbing the biodiversity of the ecosystem with an increase in the population of zebras and antelopes. Thus, option C is correct.

For more information about the African Savannas ecosystem, refer to the link:

https://brainly.com/question/4088008

Answer:

ok so if I remember correctly then it basically its like if I have a baseball and throw it full force the the ball will go far because the mass is light and the force was great but if I get a bowling ball and do the same with equal force it will go shorter than the base ball because the mass if more than the force I put in

The given question is incomplete. The complete question is:

Write the electron configuration for [tex]Ca^+[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Ca^{2+}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]Se^{2-}[/tex] . (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.) Write the electron configuration for [tex]S^{2-}[/tex]. (Express your answer as a series of orbitals, in order of increasing orbital energy. For example, the electron configuration of Li would be entered as 1s22s1 or [He]2s1.)

Answer:

[tex]Ca^+:19:[Ar]4s^1[/tex]

[tex]Ca^{2+}:18:[Ar][/tex]

[tex]Se^{2-}:32:[Ar]3d^{10}4s^24p^2[/tex]

[tex]S^{2-}:18:[Ar][/tex]

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies. The positively charged species are formed by loss of electrons and negatively charged species are formed by gain of electrons.

[tex]Ca:20:[Ar]4s^2[/tex]

[tex]Ca^+:19:[Ar]4s^1[/tex]

[tex]Ca^{2+}:18:[Ar][/tex]

[tex]Se:34:[Ar]3d^{10}4s^24p^4[/tex]

[tex]Se^{2-}:36:[Ar]3d^{10}4s^24p^6[/tex] or [tex]Se^{2-}:36:[Kr][/tex]

[tex]S:16:[Ne]3s^23p^4[/tex]

[tex]S^{2-}:18:[Ne]3s^23p^6[/tex] or [tex]S^{2-}:18:[Ar][/tex]