All categories

2 years ago

How do chemists model the valence electrons of metal atoms

Chemistry

1 answer:

natali 33 [55]2 years ago

6 0

Answer:

How do chemists model the valence electrons in metal atoms? The valence electrons of metal atoms can be modeled as a sea of electrons. ... Why are alloys more useful than pure metals? Alloys are important because their properties are often superior to those of their component elements.

Explanation:

You might be interested in

How many liters of CO2 are formed when 14.0 g of CaCO3 react at 1.00 atm and 1000K

Gnesinka [82]

Answer: 11.5

Explanation:

7 0

3 years ago

Read 2 more answers

Help plzzzz

Ilya [14]

Answer:

option b is correct

..............

4 0

2 years ago

Read 2 more answers

2 NO + O22 NO2 is second order in NO and first order in O2. Complete the rate law for this reaction in the box below. Use the fo

riadik2000 [5.3K]

Answer : The value of rate of reaction is $1.35\times 10^{-8}Ms^{-1}$

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The given chemical equation is:

$2NO+O_2\rightarrow 2NO_2$

Rate law expression for the reaction is:

$\text{Rate}=k[NO]^a[O_2]^b$

As per question,

a = order with respect to $NO$ = 2

b = order with respect to $O_2$ = 1

Thus, the rate law becomes:

$\text{Rate}=k[NO]^2[O_2]^1$

Now, calculating the value of rate of reaction by using the rate law expression.

Given :

k = rate constant = $9.87\times 10^3M^{-2}s^{-1}$

[NO] = concentration of NO = $7.86\times 10^{-3}M$

$[O_2]$ = concentration of $O_2$ = $2.21\times 10^{-3}M$

Now put all the given values in the above expression, we get:

$\text{Rate}=(9.87\times 10^3M^{-2}s^{-1})\times (7.86\times 10^{-3}M)^2\times (2.21\times 10^{-3}M)^1$

$\text{Rate}=1.35\times 10^{-8}Ms^{-1}$

Hence, the value of rate of reaction is $1.35\times 10^{-8}Ms^{-1}$

7 0

2 years ago

Question 4 point

Ronch [10]

Answer:

$5393.4gH_2O$

Explanation:

Hello there!

In this case, for the described chemical reaction, we can write:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Thus, by considering the 1:2 mole ratio of methane to water, and the molar mass of the latter (18.02 g/mol), the following is useful to calculate the mass of water that is produced:

$149.65molCH_4*\frac{2molH_2O}{1molCH_4} *\frac{18.02gH_2O}{1molH_2O}$

Which is equal to:

$5393.4gH_2O$

Which is not among the choices.

Regards!

5 0

2 years ago

Differentiate between compounds and mixtures using the particle model of<br> matter.

trasher [3.6K]

Answer:

compounds are substance which can be formed by chemically combining two or more elements.

mixtures are substance that are formed by physically mixing two or more substances

8 0

2 years ago