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Elis [28]
2 years ago
13

Woh want to do a long distance relationship with me

Chemistry
1 answer:
nikitadnepr [17]2 years ago
5 0
Love how the subject is chemistry HAHA. I live in FL :/
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A typical engagement ring has 0.77 cm^3 of gold. What mass is present?
Fantom [35]

Answer:

Mass = 14.876 g

Explanation:

Given data:

Volume of gold = 0.77 cm³

Mass of gold = ?

Solution:

Density of gold from literature is 19.32 g/cm³

Formula:

d = m/v

d = density

m = mass

v = volume

by putting values,

19.32 g/cm³ = m/ 0.77 cm³

m = 19.32 g/cm³ × 0.77 cm³

m = 14.876 g

4 0
2 years ago
Describe how you would prepare 350 ml of 0.100 m c12h22o11 starting with 3.00l of 1.50 m c12h22o11
Leona [35]

To prepare 350 mL of 0.100 M solution from a 1.50 M solution, we simply have to use the formula:

M1 V1 = M2 V2

So from the formula, we will know how much volume of the 1.50 M we actually need.

 

1.50 M * V1 = 0.100 M * 350 mL

V1 = 23.33 mL

 

So we need 23.33 mL of the 1.50 M solution. We dilute it with water to a volume of 350 mL. So water needed is:

350 mL – 23.33 mL = 326.67 mL water

 

 

Steps:

1. Take 23.33 mL of 1.50 M solution

<span>2. Add 326.67 mL of water to make 350 mL of 0.100 M solution</span>

7 0
3 years ago
A sample of 87.6 g of carbon is reacted with 136 g of
Vadim26 [7]

Answer:

A. fluorine, 1.79 moles

Explanation:

Given parameters:

Mass of carbon  = 87.7g

Mass of fluorine gas  = 136g

Unknown:

The limiting reactant and the maximum amount of moles of carbon tetrafluoride that can be produced  = ?

Solution:

   Equation of the reaction:

             C    +   2F₂ →   CF₄  

let us find the number of the moles the given species;

  Number of moles = \frac{mass}{molar mass}  

  C;   molar mass = 12;

            Number of moles  = \frac{87.7}{12}   = 7.31moles

 F;  molar mass  = 2(19)  = 38g/mol

             Number of moles  = \frac{136}{38}   = 3.58moles

 So;

   From the give reaction:

          1 mole of C requires 2 moles of F₂

         7.31 moles of C will then require 2 x 7.31 moles of F₂ = 14.62moles

But we have 3.58 moles of the F₂;

  Therefore, the reactant in short supply is F₂ and it is the limiting reactant;

 So;

       2 moles of F₂ will produce  mole of CF₄  

       3.58 moles of F₂ will then produce \frac{3.58}{2}  = 1.79moles of CF₄

6 0
3 years ago
2, 3-diethyl–4-octene  what is structure of this pls help​
pantera1 [17]

Answer:

(CH2CH3).

!

CH-CH-CH-CH=CH-CH2-CH2-CH3

!

(CH2CH3)

2, 3-diethyl–4-octene

i am not sure.

4 0
3 years ago
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen fluoride hf
pychu [463]
The  standard  state formation reaction  is  a  chemical  reaction  in  which one  moles  of  substance  in  its  standard state  is formed from  its constituent  element in  their  standard  state.All  the  substance must  be  in  their  most stable  state  at  100kpa  and  25  degrees  celsius.
therefore  for  HF is
1/2H2 +1/2F2 =HF
6 0
3 years ago
Read 2 more answers
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