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3 years ago

Particles are arranged in a crystal structure in a sample of:

1 answer:

6 0

The answer is number 4. Ag(s) or Solid Silver. Silver in a solid phase has a face centered cubic crystal structure. Among your choices, silver is the only example of particles that are arranged in their crystal structure while the other choices are gases and liquid. Liquid and gases have loose atoms that do not form crystal structures.

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How many electrons are in an ion of sulfur (82)?

bearhunter [10]

Answer:

B 16

Explanation:

the atomicnumber =protons of the atom =electrons do keep in mind that they are charged negatief

4 0

3 years ago

Ferrous sulfate (FeSO4) was used in the

BARSIC [14]

Ferrous sulfate (FeSO4) is obtained by the reaction of aqueous ferric sulfate with gaseous sulfur dioxide and water according to the equation below:

Aqueous ferric sulfate = $Fe_2(SO_4)_3_{(aq)}$

Gaseous sulfur dioxide = $SO_2_{(g)}$

Water = $H_2O_{(l)}$

Aqueous sulfuric acid = $H_2SO_4_{ (aq)}$

Aqueous ferrous sulfate = $FeSO_4_{ (aq)}$

Thus, the balance equation becomes:

$Fe_2(SO_4)_3_{(aq)}$ + $SO_2_{(g)}$ + $2H_2O_{(l)}$ $--->$ $2 H_2SO_4_{ (aq)} + 2 FeSO_4_{ (aq)}$

More on ferrous sulfate can be found here: brainly.com/question/10834028

6 0

3 years ago

B. Calculate The number of moles of hydrochloric acid in 10 mL of 6.0 M HCI; 6,0 M HCl contains 6 moles

aksik [14]

Answer:

hydrochloric acid has a molar mass of

36.46 g/mol

, which means that the

164-g

sample will contain

164

⋅

1 mole HCl

36.46

4.498 moles HCl

As you know, molarity is defined as moles of solute, which in this case is hydrochloric acid, divided by liters of solution

molarity

moles of solute

liters of solution

6.0-M

hydrochloric acid solution will contain

moles of hydrochloric acid for every liter of solution. This means that

4.498

moles will come with a volume of

⇒

4.498

moles

6.0

moles

0.7497 L

5 0

3 years ago

A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results in

Thepotemich [5.8K]

Answer:

A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results in degrees Celsius are shown here. ... Solar energy warming a room.

Explanation:The relationship between the temperature of a system and the total energy of the ... Identical containers, made of different materials, were filled with hot water, ... Which of the following is evidence of energy transfer resulting from the change in the ... cube was monitored for 30 minutes and the results graphed as shown here.

7 0

3 years ago

Two moles of a monatomic ideal gas are contained at a pressure of 1 atm and a temperature of 300 K; 34,166 J of heat are transfe

anygoal [31]

Answer:

Final temperature is 302 K

Explanation:

You can now initial volume with ideal gas law, thus:

V = $\frac{n.R.T}{P}$

Where:

n are moles: 2 moles

R is gas constant: 0,082 $\frac{atm.L}{mol.K}$

T is temperature: 300 K

P is pressure: 1 atm

V is volume, with these values: 49,2 L

The work in the expansion of the gas, W, is: 1216 J - 34166 J = -32950 J

This work is:

W = P (Vf- Vi)

Where P is constant pressure, 1 atm

And Vf and Vi are final and initial volume in the expansion

-32950 J = -1 atm (Vf-49,2L) × $\frac{101325 J}{1 atm.L}$

Solving: Vf = 49,52 L

Thus, final temperature could be obtained from ideal gas law, again:

T = $\frac{P.V}{n.R}$

Where:

n are moles: 2 moles

R is gas constant: 0,082 $\frac{atm.L}{mol.K}$

P is pressure: 1 atm

V is volume: 49,52 L

T is final temperature: 302 K

I hope it helps!

4 0

3 years ago