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Liono4ka [1.6K]
3 years ago
14

N2 + 3 H2 → 2 NH3

Chemistry
1 answer:
sweet [91]3 years ago
5 0

Answer:

B

Explanation:

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How many joules are released when one atom of americium 241, the isotope used in ionization-type smoke detectors, undergoes apha
klemol [59]

When Americium (Am-241) undergoes alpha decay(He-4) it forms neptunium (Np-237) based on the following pathway:

²⁴¹Am₉₅ → ²³⁷Np₉₃ + ⁴He₂

The energy released in given as:

ΔE = Δmc²

where Δm = mass of products - mass of reactants

                 = [m(Np-237) + m(He-4)] - [m(Am-241)]

                 = 237.0482+4.0015-241.0568 = -0.0073 g/mol = -7.3 * 10⁻⁶ kg/mol

ΔE = -7.3*10⁻⁶ kg/mol * (3*10⁸ m/s)² = -5.84*10¹¹ J/mol



4 0
3 years ago
Give a definition of mixture? <br> Why air is called a mixture?
anzhelika [568]

Question

Give a definition of mixture?

Why air is called a mixture?

Answer:

mixture - substance made by combining two more different materials in such a way that no chemical reaction occurs.

Air is a mixture  because  it is composed of gases like inert gases, carbon dioxide, oxygen, nitrogen an so on. Also dust particles are present in the atmosphere so air is a mixture .

Explanation:

8 0
3 years ago
An object with a height of 0.3 meter is placed at a distance of 0.4 meter from a concave spherical mirror. An image with a heigh
Sophie [7]

We can use the magnification equation for this problem.

Magnification equation:

<em>hi/h0 = di/d0</em>

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So plugging in the given variables we will have the corresponding equation

0.1 m / 0.3 m = <em>di / </em>0.4 m

<em>di</em> = 0.1333333m

The generated image of the object is located 0.13 meters or 13 cm away from the mirror

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