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Darya [45]
3 years ago
12

Which of the following elements would you expect to be ductile and

Chemistry
1 answer:
aksik [14]3 years ago
8 0

Answer:

ductile - germanium

mellabe - zirconium

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How many grams of dry nh4cl need to be added to 2.00 l of a 0.600 m solution of ammonia, nh3, to prepare a buffer solution that
Brrunno [24]
Nh4cl = 117.165 gram ( solution is attached )

8 0
4 years ago
Choose the correct answer. The difference between the mass number of an isotope and its atomic number is (a) directly related to
kicyunya [14]

Answer : The correct answer is, (c) the number of neutrons

Explanation :

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Atomic number

For example : For Carbon - 13 isotope.

Mass number = 13

Atomic number = 6

Number of neutrons = Mass number - Atomic number

Number of neutrons = 13 - 6 = 7

Hence, the difference between the mass number of an isotope and its atomic number is the number of neutrons.

6 0
3 years ago
At 800 K, the equilibrium constant, Kp, for the following reaction is 3.2 × 10–7. 2 H2S(g) ⇌ 2 H2(g) + S2(g) A reaction vessel a
djverab [1.8K]

Answer:

0.008945 atm

Explanation:

In the reaction:

2H2S(g) ⇌ 2 H2(g) + S2(g)

Kp is defined as:

Kp = P_{H_{2}}^2P_{S_{2}} / P_{H_{2}S}^2

<em>Where P is the pressure of each compound in equilibrium.</em>

If initial pressure of H2S is 3.00atm, concentrations in equilibrium are:

H2S = 3.00 atm - 2X

H2 = 2X

S2: = X

Replacing:

3.2x10^{-7} = (2X)^2X / (3-2X)^2

3.2x10^{-7} = 4X^3 / 9- 6X+4X^2

0 = 4X³ - 1.28x10⁻⁶X² + 1.92x10⁻⁶X - 2.88x10⁻⁶

Solving for X:

X = 0.008945 atm

As in equilibrium, pressure of S2 is X, <em>pressure is 0.008945 atm</em>

7 0
3 years ago
A population’s carrying capacity is the number of individuals that die over a given time period. True or false
erik [133]

Answer:

I believe its false

Explanation:

a carrying capacity is the maximum amount of living things that can be held in a single container

6 0
3 years ago
Read 2 more answers
. Suppose you want to know the amount of heat
djyliett [7]

Answer:                                                  .........................................................................................                                      

Explanation:

5 0
3 years ago
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