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3 years ago

6

a gas chamber is filled with four gases. When a small opening is made in the gas chamber you expect which gas to escape last hyd

rogen,methane, helium, ammonia

1 answer:

Nimfa-mama [501]3 years ago

8 0

I really don’t know the answer, please help this kiddo with his question

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What is the [OH-] of solution with pH of 3.4?

arsen [322]

Answer:

(A) 4×0.0001M

Explanation:

[OH-] = 10^-3.4 which is equivalent to 4×0.0001M

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How many valence electrons does an atom of any halogen have?

Makovka662 [10]

All halogens are stable so they have 8 electrons in their last shell

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What is the ph of a 0.01 m solution of the strong acid hno3 in water?

kumpel [21]

Answer is: pH <span>of a 0,01 M solution is 2.
c(HNO</span>₃) = 0,01 M = 0,01 mol/L.
pH = -log(c(HNO₃).
pH = -log(0,01 mol/L).
pH = 2.
pH<span> is a numeric scale used to specify the </span>acidity<span> or </span>basicity<span> of an </span>aqueous solution<span>. If pH is less than seven, than solution is acidic and if pH is greater seven, solution is basic, if pH is equal seven, solution is neutral.</span>

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Green plants absorb sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compound

Kamila [148]

Answer:

$698 \ THz$

Explanation:

Data provided as per the question below:-

Wavelength = 430.nm

The computation of the frequency of the light is shown below:-

Frequency = Velocity of light ÷ Wavelength

The Velocity of light = $= {3.0 \times 10^8 \ m/s}$

Wavelength = 430 nm = $4.30 \times 10^-^7$ m

Frequency = $\frac{3.0 \times 10^8 \ m/s}{4.30 \times 10^-^7}$

$= 6.98 \times 10^1^4 \ hz$

$= 6.98 \times 10^2 \ Thz$

= $698 \ THz$

Therefore for determining the frequency we simply applied the above formula.

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If you have a balloon inside a car at noon during a hot summer day, the balloon molecules

aleksandrvk [35]

Answer:

it decreases

Explanation:

because its false

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