I need help, please answer

Answer:

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

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)

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

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Answer:

Unbalanced

Explanation:

The reactants side says 2Na. This means there should also be 2Na on the product's side. However, there is only 1 Na there. Therefore, the chemical equations are unbalanced.

Hope this helps! If it did, please mark it as brainliest! It would help a lot! Thanks! :D

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:c

Explanation:

c

Answer:

b. proton

Explanation:

The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom. Electrons have an electric charge of −1, which is equal but opposite to the charge of a proton, which is +1.

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.

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Answer:

[tex]1.26*10^2^4[/tex]

Explanation:

To find molecules, we will need to multiply the number of moles of carbon monoxide by Avogadro's number. Avogadro's number is [tex]6.022*10^2^3[/tex].

So the equation would look like this:

[tex](2.1) * (6.022*10^2^3) = 1.26 *10^2^4[/tex]

Answer:

34.8 mL

Explanation:

First we convert 5.48 g of CuNO₃ into moles, using its molar mass:

Now we can calculate the volume of the solution, using the definition of molarity:

Finally we convert L into mL:

Explanation:

require an emergency support immediately

Answer:

0.0500

Explanation:

Answer: the answer would be B

Answer:

The following numbers are true for protons:

2.

5.

7.

Explanation:

I know for a fact that Protons have a positive charge

they are located inside of the nucleus

Go.ogle says that they aren't involved in bonding

And it says that it has a mass of one

I hope this helps chu <3

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:

Pppppppp pppppppp pppppppp pppppppp

Answer:

Cycle

Explanation:

Answer:

I think its learned behavior

Explanation:

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

Answer:

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

I hope this help

Answer:

i don't see the question

Explanation:

Radiation from alpha decay has the least energy.

Alpha decay is the name for the nuclear process that releases alpha particles. Two protons that were lost by the uranium atom are present in the alpha particle. Additionally, the two protons have a +2 charge. The particle's mass, or the sum of its protons and neutrons, is represented by the top number, 4, in this case. Alpha particles must also have two neutrons because they have two protons, making a total of four protons and neutrons. Two protons and two neutrons are the constant components of alpha particles.

A nuclear process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms to another element. The helium nucleus that is being ejected is known as an alpha particle.

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Answer:

C) Alpha decay

Explanation:

Alpha decay, beta decay, electromagnetic decay, Gamma decay

its least to greatest

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:

Me gusta tu corte G

Explanation:

Answer: K L M. 2 8 6.

Explanation:

Answer:

0.468 m

Explanation:

From the question given above, the following data were obtained:

Mass of napthalalene (C₁₀H₈) = 30 g

Mass of toulene = 500 g

Molality =?

Next, we shall determine the number of mole in 30 g of C₁₀H₈. This can be obtained as follow:

Mass of C₁₀H₈ = 30 g

Molar mass of C₁₀H₈ = (12×10) + (8×1)

= 120 + 8

= 128 g/mol

Mole of C₁₀H₈ =?

Mole = mass / molar mass

Mole of C₁₀H₈ = 30 / 128

Mole of C₁₀H₈ = 0.234 mole

Next, we shall convert 500.0 g of toulene to Kg. This can be obtained as follow:

1000 g = 1 Kg

Therefore,

500 g = 500 g × 1 Kg / 1000 g

500 g = 0.5 Kg

Finally, we shall determine the molality of the solution. This can be obtained as follow:

Mole of solute (C₁₀H₈) = 0.234 mole

Mass of solvent (toulene) = 0.5 Kg

Molality =?

Molality = mole of solute / Kg of solvent

Molality = 0.234 / 0.5

Molality = 0.468 m

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