2 H2 + O2 → 2 H2O Is the reaction balanced?

You are at home in your air conditioned garage. You are planning a family road trip from New York to Florida. You are lnfating t

Ksenya-84 [330]

Hello!

According to the Charles' Law, the volume of a gas is proportional to temperature when pressure is constant. When going from New York to Florida, if the pressure is left constant the volume of the tires will increase.

The final volume of the tires can be calculated from the following equation, derived from Charles' Law:

$V2= \frac{V1}{T1}*T2=\frac{10 L}{10degC}*32degC=32 L$

Have a nice day!

3 0

3 years ago

Young fronds are called____ because of how they are coiled

topjm [15]

Answer:

Fiddlehead

Explanation:

Young fronds are called Fiddleheads

because of how they are coiled

4 0

2 years ago

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For which electrode could you use an inactive material

kow [346]

Mercury and carbon two electrodes can't be used with an inactive or inert material.

<h3>What is an electrode?</h3>

The electrode is the element which is used to complete the electric circuit in welding. Some time electrode is connected with the positive terminal and sometimes with a negative terminal, it depends on the requirement of the welding process.

Inert electrode is an electrode that serves only as a source or sink for electrons without playing a chemical role in the electrode reaction. Precious metals, mercury, and carbon are typically used as inert electrodes.

Therefore, neither of the two electrodes can be used with an inactive or inert material.

Learn more about electrodes here:

brainly.com/question/13098144

#SPJ1

7 0

2 years ago

BRAINLIEST TO CORRECT ANSWER

rosijanka [135]

Answer:

A right? I'm pretty sure it's A

7 0

3 years ago

When electromagnetic radiation of wavelength 300nm falls on the surface of sodium electrons are emitted with a KE of 1.68 * 10 5

gtnhenbr [62]

Answer:

3.83 × 10⁻¹⁹ J; 518 nm

Step-by-step explanation:

The equation for the photoelectric effect is

hf = Φ + KE

Data:

λ = 300 nm = 300 × 10⁻⁹ m

KE = 1.68 × 10⁵ J/mol

Calculations:

Part 1. Minimum energy to remove an electron

(a) Calculate the energy of the photon

fλ = c

f = c/λ Divide each side by λ

E = hf

E = hc/λ

E = (6.626× 10⁻³⁴ × 2.998 × 10⁸)/(300 × 10⁻⁹)

E = 6.622 × 10⁻¹⁹ J

(b) Calculate the KE of one electron

KE = 1.68 × 10⁵ × 1/(6.022 × 10²³)

KE = 2.790 × 10⁻¹⁹ J

(c) Calculate the work function

hf = Φ + KE Subtract KE from each side

Φ = 6.622 × 10⁻¹⁹ - 2.790 × 10⁻¹⁹

Φ = 3.83 × 10⁻¹⁹ J

The minimum energy to remove an electron from a sodium atom

is 3.83 × 10⁻¹⁹ J.

Part 2. Maximum wavelength to remove an electron

The photon must have just enough energy to overcome the work function and leave the electron with zero kinetic energy.

E = Φ

hc/λ = Φ Multiply each side by λ

hc = Φ λ Divide each side by Φ

λ = hc/ Φ

λ = (6.626 × 10⁻³⁴ × 2.998 × 10⁸)/(3.83 × 10⁻¹⁹)

λ = 5.18 × 10⁻⁷ m Convert to nanometres

λ = 518 nm

The maximum wavelength that will cause an electron to move is 518 nm.

6 0

3 years ago

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