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3 years ago

A chart that organizes elements by their chemical properties and increasing atomic number is the

1 answer:

8 0

Periodic table!

The periodic table organizes elements by their chemical properties (mainly through vertical columns known as groups) and increasing atomic number.

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For the reaction co(g)+h2o(g)⇌h2(g)+co2(g), k= 4.24 at 800 k what can be said about this reaction at this temperature?

Amanda [17]

The question has missing information.

The options are given below.

a.The equilibrium lies far to the right

b. The reaction will proceed very slowly

c. The reaction contains significant amounts of products and reactants at equilibrium.

d. The equilibrium lies far to the left

Answer : The correct answer is option c: The reaction contains significant amounts of products and reactants at equilibrium.

Explanation :

Option a is not correct because for equilibrium to lie far to the right, we need a large value of keq ( Keq >>> 1 ), but the keq value is small.

option b is also not correct because in order to predict the speed of the reaction, we need more information. The speed of the reaction cannot be predicted using Keq value.

Option d is not correct because for Keq to lie far to the left, it has to be very very small. ( Keq <<< 1)

The value of equilibrium constant is given as 4.24. This value is very near to 1.

Equilibrium constant for this reaction is calculated as

$Keq = \frac{[H_{2}] [CO_{2}]}{[H_{2}O][CO]}$

When Keq = 1, $[H_{2}] [CO_{2} ] = [CO] [H_{2}O]$

That means concentrations of products and reactants are equal.

Since the keq value for our reaction is very close to 1, we can say that , there are significant amounts of reactants and products at equilibrium.

Therefore option C is the correct option.

8 0

3 years ago

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Diamond has a density of 3.52 g/ml. what is the volume in cubic centimeters of a diamond with a mass of 15.1 g? 4.3 cm3 4.29 cm3

Kamila [148]

Density of 3.52g/ml means for each milliliter of space there are 3.52 grams of diamond.

To set the stage:
$\frac{3.52}{1} = \frac{15.1}{x}$
Set the denominators equal:
$\frac{3.52x}{x} = \frac{15.1}{x}$
Remove the denominators:
$3.52x = 15.1$
Isolate x by dividing both sides by 3.52:
$x = 4.289772 {cm}^{3}$

6 0

3 years ago

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What is the bronsted acid of NO2- + H2O HNO2 + OH-

sammy [17]

<h3><u>Answer</u>;</h3>

H2O -Bronsted Acid

<h3><u>Explanation;</u></h3>

Bronsted-Lowry acids are H+ donors , while Bronsted-Lowry bases are H+ acceptors .
A reaction of a Bronsted-Lowry acid and a Bronsted base is a neutralization reaction that is characterized by H+ transfer.

The above reaction is an example of base ionization or dissociation where;

B (aq) + H2O (l) → BH+ (aq) + OH– (aq)

That is; Base + Acid will give a conjugate acid + hydroxide ion

In our case; NO2- + H2O → HNO2 + OH- ; H2O is the H+ donor and thus, it is a Bronsted Acid.

8 0

3 years ago

What is/are the organization's prey?

natka813 [3]

Answer:

Nearly 80 per cent of organisations in North America and Europe were victims of cyber attacks last year and nearly half of cyber attacks used malware hidden in encrypted traffic to evade detection, a report said on Wednesday.

The encryption technology that is crucial to protecting sensitive data in transit such as web transactions, emails and mobile apps, can allow malware hiding inside that encrypted traffic to pass uninspected through an organisation’s security framework.

The report by US-based security company A10 Networks in partnership with Ponemon Institute surveyed 1,023 IT and IT security practitioners in North America and Europe, highlighting the challenges these professionals face in preventing and detecting cyber attacks.

4 0

3 years ago

What’s the answer? I need an answer as soon as possible please!

inysia [295]

Answer:

1, 1, 2

Explanation:

1, 1, 2

5 0

3 years ago

Read 2 more answers