PLEASE HELP MEEEEE. Calculate how many grams of hydrogen are needed to synthesize 56g of nitrogen in ammonia.
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Answer:

As the coil moves through the magnetic field, created by the magnet, an electric current flows through it. The electric current flows out from the microphone to a computer or other recording device, and you can hear it. Aspeaker works in almost the same way, except that the process isreversed.

Answer:

A location that is humid, would most likely support a marsh ecosystem.

Explanation:

The Florida Everglades are an example of a marsh :)

"Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges."

Some inherited traits can be changed by an organism's environment because environment has a direct impact on organisms.

Traits allow a plant, animal, or other organism to survive and reproduce in its environment which is known as adaptations. Natural selection occurs when there is some variation in the inherited traits of organisms within a species.

So we can conclude that some inherited traits can be changed by an organism's environment because environment has a direct impact on organisms.

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Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

Answer:

Explanation:

option C is correct

Answer:

The moon is covered in Earth’s shadow.

Explanation:

When the moon goes behind the earth to the shadow it becomes a solar eclipse.

PS, Can you mark me brainlyest please.

Answer:Some examples of the force of gravity include;

-The force that holds the gases in the sun.

-he force that causes a ball you throw in the air to come down again.

-The force that causes a glass you drop to fall to the floor.

-The force that keeps the Earth and all of the planets in line in the proper position in their orbits around the sun.

-The force that causes an apple to fall downward from an apple tree.

-he force that keeps you walking on Earth instead of floating away into space.

Magnesium or metal reacts with oxygen to produce magnesium oxide or metal oxide. The mass of oxygen needed to completely react with magnesium is 64 g.

Mass is the weight or the quantity of the substance that is estimated in grams and kilograms.

The balanced reaction can be given as:

[tex]\rm 2Mg + O_{2} \rightarrow 2MgO[/tex]

From the balanced reaction, 2 moles of magnesium and 1 mole of oxygen are required to produce 2 moles of magnesium oxide.

If 2 mol Mg requires 1 mol oxygen then, 4 mol Mg will need 2 mol of oxygen.

The mass of oxygen can be calculated as:

[tex]\begin{aligned}\rm mass &=\rm molar\; mass \times moles \\\\&= 32 \times 2\\\\&= 64 \;\rm gm\end{aligned}[/tex]

Therefore, option B. 64 gm of oxygen are required.

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Answer:

I think it's the state of the surrounding water because if the water holds impurities it will float and if it doesn't have impurities it will sink

A submarine is able to raise and lower itself underwater. A rock sinks when it is dropped in a pool because it is denser than water. A piece of wood floats in the pool because it is less dense than water. If we want to change in sink or float of submarine then we must  change the state of surrounding water. Thus, option c is correct.

According to Archimedes's principle the upward buyout force that is exerted on a body immersed in a fluid whether fully or partially, is equal or less than the fluid that the body displaces.

Mathematically

Buyout force = Fb=-pgv

Where

p= density of fluid

g= acceleration due to gravity

v = Volume of fluid

So, if a object is floating in the water then buyout forces must be equal to their weight, and for that weight of water that is displaced by object must be greater than or equal to the weight of object. So object is floating.

Therefore, a submarine is able to raise and lower itself underwater. A rock sinks when it is dropped in a pool because it is denser than water. A piece of wood floats in the pool because it is less dense than water. If we want to change in sink or float of submarine then we must  change the state of surrounding water. Thus, option c is correct.

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#SPJ2

Answer:

It is the way of cleaning of impurities present in metals

Answer:

11 and a half

Explanation:

well it luks to be

Answer:

11.5 cm

Explanation:

jsosne92he9dbw9wns9wne9dbe8d

The reaction is given by

[tex]\\ \rm\Rrightarrow C_6H_5OH+Zn\longrightarrow C_6H_6+ZnO[/tex]

Answer:

See below ~

Explanation:

Answer:

1. oxygen gas

2. Asteroid and comet bombardment had

increased

3. A secondary atmosphere is an atmosphere of a planet that did not form by accretion during the formation of the planet's star. A secondary atmosphere instead forms from internal volcanic activity, or by accumulation of material from comet impacts.

The climate of the Quaternary period showed several decreases in global temperature (glacial periods) separated by warm (interglacial) periods. Core samples taken from sea beds elude to at least sixteen glaciations during the Quaternary period.

A primary atmosphere is an atmosphere of a planet that forms by accretion of gaseous matter from the accretion disc of the planet's sun. Planets such as Jupiter and Saturn have primary atmospheres. Primary atmospheres are very thick compared to secondary atmospheres like the one found on Earth.

Now we have Earth's “third atmosphere,” the one we all know and love—an atmosphere containing enough oxygen for animals, including ourselves, to evolve. So plants and some bacteria use carbon dioxide and give off oxygen, and animals use oxygen and give off carbon-dioxide—how convenient!

The value of DP in the rectangle QUAD can be gotten by equating DP and DA which will be 17 units.

From the complete question, DP = 4x + 1, and PA = x + 13. In this case, the value of DP will be calculated thus:

DP = DA (property of rectangle)

4x + 1 = x + 13

Collect like terms

4x - x = 13 - 1

3x = 12

Divide both side by 3

3x/3 = 12/3

x = 4

Therefore, DP will be:

= 4x + 1

= 4(4) + 1

= 16 + 1 = 17

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Answer:

The substance occupy 961.54 cm³ space.

Explanation:

Given data:

Mass of substance = 750.00 g

Density of substance = 0.78 g/mL

How much space it occupy = ?

Solution:

The space occupy by the substance is equal to its volume. Thus we will calculate the volume by applying density formula. Which is actually the space cover by substance.

d = m/v

d = density

m = mass

v = volume

0.78 g/mL = 750.00 g/ v

v = 750.00 g/ 0.78 g/mL

v = 961.54 mL

1 mL = 1 cm³

v = 961.54 cm³

Thus substance occupy 961.54 cm³ space.

Answer:

species like plants, animals , human etc

Answer:

Dogs, Chocolate, Tvs, Phones.

Explanation:

Answer:

Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure, which increases the substance's temperature to the melting point.

Isotopes : the same atomic number, but different mass numbers  

Atomic mass is the average atomic mass of all its isotopes  

avg atomic mass = m1.%m1 + m2.%m2....mn.%mn

You did not include the mass of each isotope

Element X :

X-23 = 41.9%

X-25 = 58.1%

The average atomic mass of Element X :

[tex]\tt =0.419\times mass~X-23+0.581\times mass~X-25[/tex]

Answer:

hot object to cold object

Answer: when the solar system settled into its current layout about 4.5 billion years ago, earth formed when gravity pulled swirling gas & dust in to become the third planet from the sun. like its fellow terrestrial planets, earth has a central core, a rocky mantle, & a solid crust.

Answer:

A

Explanation:

The percent yield of the given reaction when substance r reacts with compound xy to produce 47.0 g of compound rx is 83.9%.

Percent yield of any reaction will tells about the loss in the production of the propduct in terms of percentage by comparing the standard yield.

Percent yield will be calculated as:

% yield = (actual yield / theoretical yield) × 100

Given actual yield = 47g

Given theoretical yield = 56g

On putting tese values on the above equation, we get

% yield = (47/56) × 100 = 83.9%

Hence, correct option is (3) i.e. 83.9%.

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Answer:

83.9%

Explanation:

Answer:

by my knowledge, i think it is the 3rd option.

Explana tion:

Answer: Silicon the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Silicon go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons.

Hope this helps! :)

first one: like charges

second one: opposite charges

third one: opposite charges

fourth one: opposite charges

yw :)

Answer:

just wanted points

Explanation:

i wasted your time srry

Answer:

Construction

Explanation:

Answer:

True

Explanation:

In a chemical reaction, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products.

Answer:

true

Explanation:

chemical reactions use reactants, to form products, and the process involves rearranging atoms :)