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What's the velocity of the balloon? Use V=VKE
A hot air balloon with a mass of 400 kilograms moves across the sky with 3,200 joules of kinetic energy. The velocity of the balloon is meters/second.
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Answer:

reaction, reversed, The Law Of Conservation of Mass, mass, rusts, oxygen

Explanation:

HOPE THIS HELPS!

Kinetic energy is the amount of energy present in the object due to motion. It is required by the body for action and motion. The kinetic energy of the car is 34385J.

Kinetic energy is a type of energy that is directly proportional to the mass of the object and the square of the velocity. The formula for the kinetic energy can be given as,

[tex]\rm KE = \dfrac{1}{2}mv^{2}[/tex]

Here,

Mass of the car (m) = 130 kg

Velocity of the car (v) = 23 m/s

Substituting values in the equation:

[tex]\begin{aligned}\rm KE &= \dfrac{1}{2}\rm mv^{2}\\\\&= \dfrac{1}{2}\times 130\times (23)^{2}\\\\&= 34385\;\rm J\end{aligned}[/tex]

Therefore, 34385J is the kinetic energy of the car.

Learn more about kinetic energy here:

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Answer:

CH₂

Explanation:

First we convert the given masses of elements into moles, using their respective molar masses:

Now we divide those results by the lowest value between the two of them:

Meaning the empirical formula is CH₂.

Answer:

Formula unit = 32.9746×10²³

Explanation:

Given:

Mass of NaCl = 320 g

Molar mass of  NaCl = 58.44 g/mol

Find:

Formula unit

Computation:

Formula unit = [Mass of NaCl / Molar mass of  NaCl]Avogadro's number

Formula unit = [320 /58.44]6.022×10²³

Formula unit = 32.9746×10²³

Answer:A.

The products must contain the same numbers and types of atoms as the reactants.

Explanation: I think this

Answer:a

Explanation:

Answer: N5 + H4 and then do 13.5 * 17.8 then solve so 240.3 divided by 9

Your answer is 26.7  Pretty sure

Explanation: (study)

Answer:

Work is all on the paper

Answer: a) root - mean - square speeds of helium atom  is 43.1 m/s

b)  root - mean - square speeds of nitrogen molecule  is 16.29m/s

Explanation:

The formula used for root mean square speed is:

[tex]\nu_{rms}=\sqrt{\frac{3RT}{M}}[/tex]

where,

[tex]\nu_{rms}[/tex] = root mean square speed

R = gas constant = [tex]8.314J/Kmol[/tex]

T = temperature = [tex]25^0C=(25+273)K=298K[/tex]

M = atomic mass  

a) root - mean - square speeds of helium atom [tex](He)[/tex]

[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{4g/mol}}=43.1m/s[/tex]

b)  root - mean - square speeds of nitrogen molecule [tex](N_2)[/tex]

[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{28.02g/mol}}=16.29m/s[/tex]

Answer: The name of the super continent that existed millions of years ago.

Explanation:

Our continents as they exist today were once joined together into a super continent known as Pangea. Over the millennia, the land masses broke off and drifted away creating the location of the continents we know today.

(つ ^‿^ )つ Hey there!

Answer → Is the second answer, The name of the super continent that existed millions of years ago.  

✨Hope this helps!✨

One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.

Answer:

Because their cells duplicate inside of you not normally!

Explanation:

Hope this helps! Plz mark as brainliest! :)

Answer:

50.127 J

Explanation:

The following data were obtained from the question:

Initial temperature (T₁) = –5 °C

Final temperature (T₂) = 37 °C

Mass (M) = 3.10 g

Specific heat capacity (C) = 0.385 J/gºC

Heat (Q) absorbed =?

Next, we shall determine the change in temperature. This can be obtained as follow:

Initial temperature (T₁) = –5 °C

Final temperature (T₂) = 37 °C

Change in temperature (ΔT) =?

ΔT = T₂ – T₁

ΔT = 37 – (–5)

ΔT = 37 + 5

ΔT = 42 °C

Finally, we shall determine the heat absorbed. This can be obtained as follow:

Mass (M) = 3.10 g

Specific heat capacity (C) = 0.385 J/gºC

Change in temperature (ΔT) = 42 °C

Heat (Q) absorbed =?

Q = MCΔT

Q = 3.10 × 0.385 × 42

Q = 50.127 J

Thus, the heat absorbed is 50.127 J.

Answer:

5 degrees required for ice

Answer:

a. changes with temperature.

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the equilibrium constant in terms of the Gibbs free energy of reaction and the temperature of the system:

[tex]lnK=-\frac{\Delta G}{RT}[/tex]

It is possible to figure out that the equilibrium constant varies as temperature does, not only on the aforementioned definition, but also in the Gibbs free energy as it is also temperature-dependent. Therefore, the appropriate answer is a. changes with temperature.

Best regards!

Answer:

Calculate moles KCl: 2.55 g / 74.55 g/mol = 0.0342 moles KCl

Volume KCl = 0.0342 mol X (1 L/0.150 mol) = 0.228 L X 1000 mL/L = 228 mL

Explanation:

Volume=288mL

Given:

Molarity=0.140 M

Mass=2.65 g

To find:

Volume=?

Molar mass of KCl = 74.55 g/mol

Firstly, we need to calculate the number of moles of KCl:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} \\\\\text{Number of moles}=\frac{2.65g}{74.55g/mol} \\\\\text{Number of moles}=0.0355 moles[/tex]

In order to calculate the volume,

[tex]\text{ Volume of KCl} = 0.0342 mol * (1 L/0.150 mol) \\\\\text{ Volume of KCl} = 0.228 L * 1000 mL/L \\\\\text{ Volume of KCl} = 228 mL[/tex]

The volume in mL will be 228mL.

Learn more:

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Answer:

[tex]3.2 \div 22.4 = \frac{1}{7} mol \: no[/tex]

[tex]4.3 \div 32 = 0.134mol \: o2[/tex]

Explanation:

NO is limit reactant so:

1÷7×46=6.57 grams of NO2 will form

Answer:

6.9399amu

Explanation:

Isotopes are elements with same atomic number but different atomic masses.

To determine the average atomic mass one must multiply the absolute atomic mass (amu) of each isotope times its absolute atomic mass. This will give the weight average contribution of each isotope. The sum of the weight average contributions gives the final weight average atomic mass of the element. The wt. avg. atomic mass is the value posted on the periodic table.

It is recommended that a table be sketched in the following form ...

Isotope  |    %             fractional amt. X Isotopic mass(amu) => Wt. Avg**.

   Li-6       7.59%    =>      0.0759       x         6.015amu        =>     0.4565

   Li-7      92.41%    =>      0.9241        x         7.016amu        =>     6.4835

*amu => atomic mass units                                 ∑ Li-6 + Li-7  =   6.9399amu

**Wt.Avg. => weight average contribution of isotope = fractional amt x Isotopic mass(amu)

*** Final Wt. Avg. = ∑Wt.Avg. Contributions (value posted of periodic table)

Answer: what

Explanation:

Answer:

i cant see the picture sorry

Explanation:

Answer:

The climate has been caused by many natural factors including changes in the sun emissions from volcanoes variations in Earth's orbit and levels of carbon dioxide. Global climate change has typically occured very slowly over thousands or millions of years .The three causes of the Earth's climate are

these are the causes of the Earth's climate.

Climate is a average weather in a given area for a long period of time is called a climate

maybe this might help ur question

Answer:

KCl and Ba(OH)₂.

Explanation:

Hello there!

In this case, since electrolytes are substances characterized by presence of covalent bonds between the atoms forming the compound, it is possible to realize that just KCl and Ba(OH)₂ as they are species composed by cations (K and Ba) and anions (OH and Cl); therefore, they have the capacity to get ionized in aqueous solution and thus transfer electricity when present.

Best regards!

The solution containing electrolytes is the flask of KCI and [tex]Ba(OH)_2[/tex].

The correct options are a and c.

An electrolyte is a medium that contains ions and conducts electricity through the movement of ions, but not electrons.

They are minerals present in the body, that are electrically charged.

Electrolytes help in maintaining the water balance in the body, and pH of the body.

The three primary electrolytes are sodium, potassium, and chloride.

Thus, the correct options are a, KCI, and b, [tex]Ba(OH)_2[/tex].

Learn more about electrolyte

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Answer: 9.46

Explanation: in LiOH solution concentration of OH- ions is 2.88·10^-5 M

And pOH = -log( 2.88·10^-5 M) = 4.54. Because PH + pOH = 14.00

Then pH = 14-4.54

Answer: POH=8

Explanation:PH = -log( H+concentration)

PH = 6

POH = 14 - PH = 8

C. 8.80 mol H₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced] N₂ (g) + 3H₂ (g) → 2NH₃ (g)

[Given] 100 g 2NH₃

[Solve] moles H₂

Step 2: Identify Conversions

[RxN] 2 mol NH₃ (g) → 3 mol H₂ (g)

[PT] Molar Mass of N - 14.01 g/mol

[PT] Molar Mass of H - 1.01 g/mol

Molar Mass of NH₃ - 14.01 + 3(1.01) = 17.04 g/mol

Step 3: Stoich

Answer:

Arteries

Explanation:

Answer:         arteries.    :)

Explanation:

the top one is right trust me and i took the test.      :)

have agreat day.     :)