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2 years ago

Describe how the phases of the moon depend on the positions of the earth and the moon brainly

Chemistry

2 answers:

Brrunno [24]2 years ago

7 0

Answer:

Explanation:

The lunar phases are the changes in the shape of the illuminated part of the Moon when viewed by an observer on Earth. These changes are cyclical according to the position of the Moon respecting the Earth and the Sun. That is to say, depending on the location of the Moon, the Earth and the Sun, a greater or lesser portion of the visible face of Moon. The phases of the Moon are produced by two causes: the movement of the Moon's rotation around the Earth and because the Moon reflects the light of the Sun as a mirror.

A lunar cycle is the span of 29.5 days during which all phases are observed. At the end of the last phase, the cycle is repeated. The 4 best known forms are the new Moon, the full Moon, the waning room and the growing room, but there are other intermediate ones. Its appearance varies from 0% illumination during the new Moon to 100% when it is a full Moon.

ss7ja [257]2 years ago

5 0

The moons phases depend on how much the earth blocks light between the sun and the moon. The phases depend on where the moon is in respect to the sun in space.

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Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Which of the following molecules has hydrogen bonding, when bondi

Makovka662 [10]

Answer:

I think the answer is……

O B.H2S

Explanation:

I’m not sure tho, I’m just not 100% positive.

5 0

2 years ago

0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction

algol [13]

Reactant C is the limiting reactant in this scenario.

Explanation:

The reactant in the balanced chemical reaction which gives the smaller amount or moles of product is the limiting reagent.

Balanced chemical reaction is:

A + 2B + 3C → 2D + E

number of moles

A = 0.50 mole

B = 0.60 moles

C = 0.90 moles

Taking A as the reactant

1 mole of A reacted to form 2 moles of D

0.50 moles of A will produce $\frac{2}{1}$ = $\frac{x}{0.50}$

thus 0.50 moles of A will produce 1 mole of D

Taking B as the reactant

2 moles of B reacted to form 2 moles of D

0.60 moles of B reacted to form x moles of D

$\frac{2}{2}$ = $\frac{x}{0.6}$

x = 2 moles of D is produced.

Taking C as the reactant:

3 moles of C reacted to form 2 moles of D

O.9 moles of C reacted to form x moles of D

$\frac{2}{3}$ = $\frac{x}{0.9}$

= 0.60 moles of D is formed.

Thus C is the limiting reagent in the given reaction as it produces smallest mass of product.

5 0

2 years ago

A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number

ValentinkaMS [17]

Answer:

Is an isotope of Cu (Copper)

Explanation:

Remember that the mass number will tell you the number of protons and neutrons. If you have the mass number(65) and the number of neutrons (36), you just need to subtract: 65 - 36 = 29 the number or protons.

As this is a neutral isotope, that means that is going to have the same number of protons and electrons, that is 29.

7 0

2 years ago

Read 2 more answers

Which element am I? Give my symbol ONLY! What a robber says as he's running away!

Olin [163]

Answer:

ummmmmmmmmmmmmmmm..mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Explanation:

ummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm.................... candyunicorns1999 has left the chat

5 0

2 years ago

Read 2 more answers

Heat the oxygen to about 150 K. What state of matter is this?

adelina 88 [10]

Answer:

<u>Gas</u>

Explanation:

It is easier if you convert the kelvin temperature into Celsius degrees:

ºC = T - 273.15 = 150 - 273.15 = -123.15ºC

Now, you know that that is a very cold temperature. Thus, may be the oxygen is not gas any more but it changed to liquid . . . or solid?

You must search for the boiling point and melting (freezing) point of oxygen in tables or the internet. At standard pressure (about 1 atm) they are:

Melting point: −218.79 °C,

Boiling point: −182.962 °C

That means that:

below -218.79ºC oxygen is solid (not our case).
between -218.79ºC and -182.962ºC oxygen is liquid (not our case)
over -182.962ºC oxygen is a gas. This is our case, because -123.15ºC is a higher temperature than -182.962ºC.

Hence, <em>the state of matter of oxygen at 150K</em>, and standard pressure, is gas.

3 0

2 years ago