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
aniked [119]
3 years ago
9

Sterling silver is a mixture of the metals silver and copper.It is used to make jewellery.sometimes sterling silver causes green

staining on skin.Which metal do you think is responsible for this?Explain why.
Chemistry
1 answer:
slavikrds [6]3 years ago
8 0

The composition of 925 Sterling Silver lends itself to the occasional green discoloration because of the presence of copper

You might be interested in
What is the correct order of energy transformation in a windmill?
Vika [28.1K]

Answer:

A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion.

hope it helps (^^)

# Cary on learning

8 0
2 years ago
11. Bacteria and dead cells are removed from circulatory
adoni [48]
Lymph nodes.
The lymphatic system plays as the body’s first line of defense against disease
7 0
3 years ago
How do you find the empirical formula of magnesium oxide?
Ede4ka [16]
N(Mg) : n(O)
1 : 1
the ratio is one to one
3 0
3 years ago
Suppose that you add 24.3 g of an unknown molecular compound to 0.250 kg of benzene, which has a K f of 5.12 oC/m. With the adde
pochemuha

Solution :

We know that :

$\Delta T_f = k_f.m$  and   $m=\frac{w_2}{m_2 \times w_1}$

Then, $\Delta T_f = k_f.\frac{w_2}{m_2.w_1}$   ..................(1)

Where,

w_1 = amount of solvent (in kg)

w_2 = amount of solute (in kg)

m_2 = molar mass of solute (g/mole)

m = molality of solution (mole/kg)

Given :

\Delta T_f = 3.14\ ^\circ C,   k_f= 5.12\ ^\circ C/m

                              =5.12 \ ^\circ C/mole/kg

                              =5.12 \ ^\circ C \ kg/mole

w_1 = 0.250 kg,  w_2 = 24.3 g

Then putting this values in the equation is (1),

$3.14 = \frac{5.12 \times 24.3}{m_2 \times 0.250}$

$m_2 = \frac{5.12 \times 24.3}{3.14 \times 0.250}$

m_2= 158.49  g/mole

So, the molar mass of the unknown compound is 158.49 g/mole.

7 0
3 years ago
What is the iupac name of N2O4​
galben [10]

<em><u>Dinitrogen Tetraoxide</u></em>

Formula: N₂O₄

Molar mass: 92.011 g/mol

6 0
3 years ago
Read 2 more answers
Other questions:
  • Jason hiked 1 mile north across a field, then 1 more mile west through the
    8·2 answers
  • Over 99% of the mass of an atom is located A) in the nucleus. B) in the protons. C) in the neutrons. D) in the electron cloud. P
    6·2 answers
  • Calculate the formula mass for the compound nitrous acid.
    7·1 answer
  • A bowling ball (mass = 7.2 kg, radius = 0.10 m) and a billiard
    6·1 answer
  • Please do number 13, I will give Brainliest
    12·2 answers
  • cis-1-Bromo-4-tert-butylcyclohexane and trans-1-bromo-4-tert-butylcyclohexane both react with sodium ethoxide in ethanol to form
    8·1 answer
  • A(n)_______is a balanced chemical equation that includes the
    8·1 answer
  • Which term best describes the molecule shown below?
    5·2 answers
  • PLZ HELP ASAP! I need this done tonight please
    6·1 answer
  • Calculate the pressure (in kpa) of 1.5 mole of helium gas at 354 k when it occupies a volume of 16.5l.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!