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Molodets [167]
3 years ago
7

Which is an example of covalently bonded atoms?

Chemistry
2 answers:
Marrrta [24]3 years ago
6 0
C) Cl2 there hope this helps people
pychu [463]3 years ago
4 0

Answer:

C) Cl2

Explanation:

Covalent bonds are when atoms are non-metal. No metals are involved.

By referencing the periodic table, we can determine their columns or groups, which shows their families and whether each of these elements are metal or non-metal.

A) Be is berylium, in the second column (group 2A), which are Alkaline Earth Metals. Since Be is a metal, BeCl2 cannot be covalent.

B) Ca is Calcium, in the second column (group 2A), which are Alkaline Earth Metals Since Ca is a metal, CaCl2 cannot be covalent.

C) The only atom is Cl, which is chlorine. It is in the 17th group or group 7A. These are halogens, a type of non-metal. This can be covalent because there are only non-metal.

D) Ti is titanium. It's in the middle section, the transition metals. Because its a metal, TiN cannot be covalent.

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calculate the atomic mass of element X, if it has 2 naturally occurring isotopes with the following masses and natural abundance
jeka57 [31]
Hey there!

To find this, you should:

1) multiply the percentage (but in a decimal form) of each isotope by the mass.
2) add all your masses together
3) make sure to check for significant figures and you’re done!

Hope this helps :)
4 0
3 years ago
A particular reactant decomposes with a half‑life of 109 s when its initial concentration is 0.280 M. The same reactant decompos
Sophie [7]

Answer:

The order of reaction is 2.

Rate constant is 0.0328 (M s)⁻¹

Explanation:

The rate of a reaction is inversely proportional to the time taken for the reaction.

As we are decreasing the concentration of the reactant the half life is increasing.

a) For zero order reaction: the half life is directly proportional to initial concentration of reactant

b) for first order reaction: the half life is independent of the initial concentration.

c) higher order reaction: The relation between half life and rate of reaction is:

Rate = \frac{1}{k[A_{0}]^{(n-1)}}

Half life =K\frac{1}{[A_{0}]^{(n-1)} }

\frac{(halflife_{1})}{(halflife_{2})}=\frac{[A_{2}]^{(n-1)}}{[A_{1}]^{(n-1)} }

where n = order of reaction

Putting values

\frac{109}{231}=\frac{[0.132]^{(n-1)}}{[0.280]^{(n-1)}}

0.472=(0.472)^{(n-1)}

Hence n = 2

halflife=\frac{1}{k[A_{0}]}

Putting values

231=\frac{1}{K(0.132)}

K = 0.0328

4 0
3 years ago
Which defines the average kinetic energy of a system's particles?
ch4aika [34]
<h2>Answer:Temperature</h2>

Explanation:

Average kinetic energy of a system of particles is given by \frac{f}{2} kT.

where,

f is the number of degrees of freedom of the particles.

k is the boltzmann constant.

T is the temperature.

For general gases,

f=3

For a given degrees of freedom,average kinetic energy is directly proportional to temperature.

So,the average kinetic energy depends on temperature.

8 0
3 years ago
Read 2 more answers
Just take it for free,
Orlov [11]

Answer:

Thanks bro, I will gladly take them for free

5 0
3 years ago
How many atoms are there in each of the following
oee [108]
<h3>Answer:</h3><h3>a) 9.033 × 10²³ particles</h3><h3>b) 4.068 × 10²⁴ particles</h3><h3>c) 1.51 × 10²³ particles</h3>

Explanation:

For us to answer these questions, we have to know two formulas:

  1. Number of particles = moles × Avogadro's Number
  2. Moles = Mass ÷ Molar Mass

Therefore:

a) particles of Na = 1.50 mol × (6.022 × 10²³) particles/mol

                            = 9.033 × 10²³ particles

b) particles of Pb = 6.755 mol × (6.022 × 10²³) particles/mol

                            = 4.068 × 10²⁴ particles

c) particles of Si

             = (7.02 g ÷ 28.085 g/mol) × (6.022 × 10²³) particles/mol

             = 1.51 × 10²³ particles

                           

4 0
2 years ago
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