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
Lina20 [59]
3 years ago
12

An alloy contains 59g of pure silver and 19g of pure copper. What is the silver in the alloy

Chemistry
1 answer:
Lyrx [107]3 years ago
6 0

59+19=78

78----->59

100------>59*100/78

this percentage silver in the alloy

You might be interested in
What is the guiding formula for combustion reactions​
IgorLugansk [536]

Answer:

Explanation: so a combustion occurs when we react a substance with oxygen .you commonly call this "burning'' .therefore combustion will always include oxygen in the equation and the product will include carbon dioxide and give off water vapours

Therefore the general equation for a complete combustion reaction would be

Fuel + O2 ------ CO2 + H2O

8 0
3 years ago
If two atoms have a difference in electronegativity of 2.0, what type of tond do they have?
stellarik [79]

Answer:

Ionic

Explanation:

got it correct on a quiz :)

3 0
3 years ago
Balance chemical equation ClO2+H2O=HClO3+HCl
steposvetlana [31]

Answer:

6CIO2 + 3H2O = 5HCIO3 + HCI

Explanation:

The 2 in CIO2 is tiny, the 2 in H2O is tiny, and the 3 in HCIO is tiny.

8 0
3 years ago
How many molecules of CaCl2 are equivalent to 75.9 g CaCl2
sergij07 [2.7K]
First, you need to find:
One mole of CaCl_{2} is equivalent to how many grams?

Well, for this you have to look up the periodic table. According to the periodic table:
The atomic mass of Calcium Ca = 40.078 g (See in group 2)
The atomic mass of <span>Chlorine Cl = 35.45 g (See in group 17)
</span>
As there are two atoms of Chlorine present in CaCl_{2}, therefore, the atomic mass of CaCl_{2} would be:

Atomic mass of CaCl_{2}  = Atomic mass of Ca + 2 * Atomic mass of Cl

Atomic mass of CaCl_{2} = 40.078 + 2 * 35.45 = 110.978 g

Now,

110.978 g of CaCl_{2} = 1 mole.
75.9 g of CaCl_{2} = \frac{75.9}{110.978} moles = 0.6839 moles.

Hence,
The total number of moles in 75.9g of CaCl_{2} = 0.6839 moles

According to <span>Avogadro's number,
1 mole = 1 * </span>6.022 * 10^{23} molecules
0.6839 moles = 0.6839 * 6.022 * 10^{23} molecules = 4.118*10^{23} molecules

Ans: Number of molecules in 75.9g of  CaCl_{2} =  4.118*10^{23} molecules

-i


3 0
2 years ago
Read 2 more answers
I WILL WHOEVER ANSWER THIS QUESTION 40 POINTS AND WILL BE MARKED AS BRAINLIEST
Ostrovityanka [42]
A) It becomes sand
I know this because Minecraft
7 0
3 years ago
Other questions:
  • There are several ways that a mutation may occur. Which of the following is not a way for a mutation to occur during the DNA rep
    13·2 answers
  • Calcium chloride contains only calcium and chloride, what is the formula for this compound?
    15·1 answer
  • Is mixing salt and pepper physical or chemical change ?
    13·1 answer
  • Can a nonpolar molecule contain polar covalent bonds?
    15·1 answer
  • Stretching a rubber band is an example of________.
    12·1 answer
  • What is the percent composition by mass of sulfur in the compound MgSO4 (gram-formula mass =120. grams per mole)?(1) 20.% (2) 27
    12·1 answer
  • 7.7 cm<br> 9.8 cm<br> 0.00<br> 0.162 m
    10·1 answer
  • there are 3 isotopes of the element Gz: Gz-80,Gz-81,Gz-83. the average atomic mass of Gz is 82.74. what is the most abundant iso
    5·1 answer
  • Why alcohols have high boiling point​
    13·2 answers
  • 4. How many joules of heat are absorbed to raise
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!