1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
serg [7]
3 years ago
13

Un anillo, de masa 90 gramos, contiene 59,1% de oro. ¿Cuál es el valor del anillo si cada mol de oro vale S/.1800?. Considere el

valor del anillo solo por el precio del oro. (m.A.AU=197)
Chemistry
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

S/.486 es el valor del anillo

Explanation:

Para hallar el precio del anillo se deben encontrar las moles de oro que contiene este.

Si el anillo es de 90g y solo el 59.1% contiene oro, la cantidad de oro en gramos es:

90g × 59.1% = 53.19g Oro en el anillo

Ahora, para convertir los gramos de oro a moles se debe usar la masa atómica del oro (197g/mol), así:

53.19g × (1mol / 197g) = <em><u>0.27 moles de oro contiene el anillo</u></em>.

Ya que cada mol de oro cuesta S/.1800, 0.27 moles de oro (Y por lo tanto, el anillo) costarán:

0.27mol × (S/.1800 / 1mol oro) =

<h3>S/.486 es el valor del anillo</h3>
You might be interested in
An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has An atom that has an atomic num
gayaneshka [121]

Answer: Option b. 50 neutrons and 38 protons.

Explanation:

Atomic number = proton number = 38

Mass number = proton number + Neutron

Mass number = 88

Proton = 38

Neutron number =?

Neutron number = Mass number — proton number

Neutron number = 88 —38 = 50

3 0
3 years ago
What happens when Mg forms an ionic bond?
uysha [10]

Answer:

option 1st is correct gains 1 electron and becomes a-1.

4 0
3 years ago
A mixture of ethyl acetate vapour and air has a relative saturation of 50% at 303 K and a total pressure of 100 kPa. If the vapo
AURORKA [14]

Answer : The correct option is, (b) 0.087

Explanation :

The formula used for relative saturation is:

\text{Relative saturation}=\frac{P_A}{P_A^o}

where,

P_A = partial pressure of ethyl acetate

P_A^o = vapor pressure of ethyl acetate

Given:

Relative saturation = 50 % = 0.5

Vapor pressure of ethyl acetate = 16 kPa

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

0.5=\frac{P_A}{16kPa}

P_A=8kPa

Now we have to calculate the molar saturation.

The formula used for molar saturation is:

\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}

and,

P(vapor free) = Total pressure - Vapor pressure

P(vapor) = P_A = 8 kPa

So,

P(vapor free) = 100 kPa - 8 kPa = 92 kPa

The molar saturation will be:

\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}

\text{Molar saturation}=\frac{8kPa}{92kPa}=0.087

Therefore, the molar saturation is 0.087

5 0
3 years ago
Which of the following has the greatest mass for one mole of the compound?
ddd [48]
I think it would be c
3 0
2 years ago
PLEASE HELP!<br><br> I’m on the last question!!
boyakko [2]
I’m not too sure because i forgot about this but i thik it’s D, good luck
4 0
3 years ago
Other questions:
  • How sensitive to changes in water temperature are coral reefs? To find out, measure the growth of corals in aquariums where the
    10·1 answer
  • In what type of solids are the particles not arranged in a regular pattern
    8·1 answer
  • "what is the probability of finding an electron within one bohr radius of the nucleus"
    10·1 answer
  • Is mixing butter, granulated sugar, and brown sugar until it's creamy a physical or chemical change and why
    12·2 answers
  • Lithium electron configuration​
    10·1 answer
  • The half-reaction at the cathode in an electrochemical cell is given below.
    15·1 answer
  • Definition: These are the layers of rock or soil that are distinguishable from other layers that have been
    9·1 answer
  • Help please and thank you for who ever
    11·2 answers
  • Why can’t you split an element in half?
    7·1 answer
  • What is moment and its calculations ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!