Dose anyone understand this I need help can anyone help me on this please !

Answer:

i don't see the question

Explanation:

Answer:

12

Explanation:

Answer:

a) cH4(g) +2O(g)__ CO2(g) +2H2O(g)

I hope this help

Answer:

I think its learned behavior

Explanation:

because animals don't learn how to migrate, they just know already.

Answer:

why does the temperature change?

Daily air temperatures at Earth's surface are controlled by the incoming and outgoing energy. During the day, the air temperature increases as energy gains exceed the energy lost from Earth's surface. Throughout the night, the air temperature decreases as Earth's surface loses more energy than it receives.

What are examples of natural products?

Classes. The broadest definition of natural product is anything that is produced by life, and includes the likes of biotic materials (e.g. wood, silk), bio-based materials (e.g. bioplastics, cornstarch), bodily fluids (e.g. milk, plant exudates), and other natural materials (e.g. soil, coal).

What is the atmosphere?

The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction.

Explanation:

I hope this helps!!

Answer:

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Answer:

it is actually corrosive

Explanation:

meaning it can cause burning of eyes, nose, throat and respiratory tract and can result in blindness, lung damage or even worst death

Answer:

true

Explanation:

Answer: K L M. 2 8 6.

Explanation:

Answer:

the fourth one I think....m

Explanation:

tfffffdd

The answer is:

Explanation:

A space operations specialist tracks, monitors, and operates spacecraft and satellites. The specialist aligns ground, spacecraft, and satellite communications systems to provide accurate data. (I took the course, I know.)

Answer:

I will measure by weight and make sure the weight of each pupils on both teams are the same

Answer:

a. 0.5dm³

b. 5x10⁻³dm³

Explanation:

a. A solution that is 4mol/dm³ contains 4 moles in 1dm³. The volume that contains 2 moles is:

2 moles * (1dm³ / 4mol) =

b. And for the 6 mol/dm³ containing 0.03moles:

0.03 moles * (1dm³ / 6mol) =

Answer:

82.24% percent composition of N and 17.76% percent composition of H .

Explanation:

Answer:

The Answer is Yes, as all of these compounds are covalent since they are not conductive.

Explanation:

.

According to the concept of conduction, only ionic compound can conduct electricity that in aqueous state.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

Learn more about conduction here:

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Explanation: Because ocean tides are the effect of ocean water responding to a gravitational gradient, the moon plays a larger role in creating tides than does the sun. But the sun's gravitational gradient across the earth is significant and it does contribute to tides as well.

Answer:

moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen

Answer:

Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.

Answer:

The appropriate alternative is option C "[tex]5.09\times 10^{14} \ s[/tex]".

Explanation:

The given value is:

Energy of photon,

E = [tex]3.37\times 10^{-19} \ J[/tex]

As we know,

h = [tex]6.626\times 10^{-34} \ Js[/tex]

Now,

The frequency of the light will be:

⇒  [tex]E=hv[/tex]

On substituting the given values, we get

⇒  [tex]3.37\times 10^{-19}=6.626\times 10^{-34}\times v[/tex]

On solving, we get

⇒                    [tex]v=5.09\times 10^{14} \ s[/tex]

If the energy of a photon of light is 3.37 x 10⁻¹⁹ J, then the frequency of the light is 5.09 x 10¹⁴ per sec.

Frequency of light will be calculated by using the below formula:
E = hυ, where

E = energy of photon = 3.37 x 10⁻¹⁹ J

h = plank's constant = 6.626 × 10⁻³⁴ Js

Putting these values on the above equation and calculate for the frequency as:

υ = 3.37 x 10⁻¹⁹ J / 6.626 × 10⁻³⁴ Js = 5.09 x 10¹⁴ per sec

Hence, option (C) is correct i.e. 5.09 x 10¹⁴ per sec.

To know more about frequency, visit the below link:
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Answer:c

Explanation:

c

Answer:

20.02 Liters

Explanation:

Mass = 35g

Volume = ?

Temperature = 301K

Pressure = 1.35 atm

The relationship between the quantities is given as;

PV =  nRT

n = mass / Molar mass = 35 / 32 = 1.09375 mol

V = nRT / P

V = (1.09375 * 0.0821 * 301) / 1.35

V = 20.02 L

Answer:

C.at 100•C.30 g of NaNO3 is dissolved in 100 g of water

Answer: 1.08×10^24 atoms

Answer:

grams H₂(g) = 6.11 grams H₂(g) used

Explanation:

Convert all given values to moles (if not already in moles), solve by rxn ratios and then convert moles to needed dimensions.

   N₂(g)   +     3H₂(g)    =>             2NH₃(g)

excess             ?                     34.6g/17g/mole = 2.04 moles

moles of H₂(g) needed = 3/2(2.04)moles = 3.05 moles H₂(g)

grams H₂(g) = 3.05 moles x 2 grams/mole = 6.11 grams H₂(g)