All categories

2 years ago

What mass of helium is in a 2.00 L balloon at STP? pls help me lol

Chemistry

1 answer:

sertanlavr [38]2 years ago

3 0

Once upon a time there was a lovely

princess. But she had an enchantment

upon her of a fearful sort which could

only be broken by love's first kiss.

She was locked away in a castle guarded

by a terrible fire-breathing dragon.

Many brave knights had attempted to

free her from this dreadful prison,

but non prevailed. She waited in the

dragon's keep in the highest room of

the tallest tower for her true love

and true love's first kiss. (laughs)

Like that's ever gonna happen. What

a load of - (toilet flush)

Allstar - by Smashmouth begins to play. Shrek goes about his

day. While in a nearby town, the villagers get together to go

after the ogre.

You might be interested in

A cylinder is fitted with a moveable piston that can be raised and lowered. What would result in an increase in the pressure of

juin [17]

Answer:

decrease the volume of the cylinder.

Explanation:

In order to be able to solve this question we have to understand what Boyle's law is. According to Boyle's law; at constant temperature the pressure of a given mass of gas is inversely proportional to to its volume.

The Boyle's law shows us the relationship between the pressure and the volume. So, the Important thing to note hear is that if the volume in a container is decreased then the pressure will increase (and vice versa) due to the fact that as the volume decreases the particles in that container makes more collision which will make the pressure to increase.

Since, the piston is moveable it means that we can decrease and increase the volume in the cylinder. So, if the decrease the volume of the cylinder then we will have an increase in the pressure of the gas below the piston.

4 0

3 years ago

I will give the first person brainliest! please helppp

Murrr4er [49]

okay so the Answer is c

7 0

3 years ago

Will a horse galloping in a field produce and average velocity of zero

motikmotik

Answer:

Explanation:

Depending on the mass of the horse and the speed, velocity will change.

5 0

3 years ago

How does nuclear fission of Uranium - 234 result in electricity being generated?

nevsk [136]

Answer:

See explanation

Explanation:

The use of Uranium - 234 to generate electricity depends on a fission reaction. The uranium nuclide is bombarded by fast moving neutrons leading to a chain reaction. Control rods and moderators are used to keep the nuclear reaction under control.

As the nuclear reaction proceeds, heat is generated and steam is consequently produced. This steam is used to turn a turbine and electricity is thereby generated.

7 0

2 years ago

A 0.105 L sample of an unknown HNO 3 solution required 35.7 mL of 0.250 M Ba ( OH ) 2 for complete neutralization. What is the c

oksano4ka [1.4K]

Answer: 0.17M

Explanation:

The equation for the reaction is :

2HNO3 + Ba(OH)2 —> Ba(NO3)2 + 2H2O

From the balanced equation, we obtain :

nA = mole of acid = 2

nB = mole of the base = 1

From the question, we obtain:

Va = Vol. Of acid = 0.105L

Ma = conc. Of acid =?

Vb = Vol of base = 35.7 mL = 0.0357L

Mb = conc. of base = 0.25M.

We solve for the conc. of the acid using:

MaVa / Mb Vb = nA / nB

(Ma x 0.105) / (0.25x0.0357) = 2

Cross multiply to express in linear form. We have:

Ma x 0.105 = 0.25 x 0.0357 x 2

Divide both side by 0.105. We have

Ma = (0.25 x 0.0357 x 2) / 0.105

Ma = 0.17M

Therefore the concentration of the acid(HNO3) is 0.17M

3 0

2 years ago