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3 years ago

The brown solid that formed is zinc copper oxygen iron

Chemistry

1 answer:

horsena [70]3 years ago

4 0

Answer: Copper

Explanation:

Just took it on Edgen

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Balance the equation

saveliy_v [14]

Explanation:

3C3+2H4+9O=3CO3+4H29o

8 0

2 years ago

A science student wants to use distillation to separate a mixture of two

statuscvo [17]

Answer:

Boiling point

Explanation:

Distillation is one of the most widely used separation technique in chemistry. It is used to separate a mixture of liquid substances with different boiling point. Hence, the basis of the separation is BOILING POINT DIFFERENCE.

In the procedure, the liquid substances are heated until they turn gaseous, which they do at different times considering their different boiling points. The separated components are then converted back to liquid states in a process called CONDENSATION.

6 0

3 years ago

You work for a cutlery manufacturer who wants to electrolytically precipitate 0.500 g of silver onto each piece of a batch of 25

ICE Princess25 [194]

Answer:

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

Explanation:

Mass of silver to be precipitated on ecah spoon = 0.500 g

Number of silver spoons = 250

Total mass of silver = 250 × 0.500 g = 125 g

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of AgCN = n = $\frac{125 g}{134 g/mol}=0.9328 mol$

Volume of AgCN solution =V

Molarity of the AgCN = 2.50 M

$V=\frac{0.9328 mol}{2.50 M}=0.3731 L=373.1 mL$

(1 L = 1000 mL)

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

6 0

3 years ago

Which image is cohesion stronger than adhesion and which image is adhesion stronger than cohesion

matrenka [14]

Image C is adhesion stronger and Image D is cohesion stronger

5 0

3 years ago

250 ml glass of lemon juice contains 20 grams of sugar. How much sugar is in 500 ml bottle

iren2701 [21]

There is 40 g of sugar in a 500 ml bottle of lemon juice

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

the concentration of sugar in lemon juice :

$\tt \dfrac{20~g}{250~ml}=0.08~g/ml$

So for 500 ml juice :

$\tt 500\times 0.08=40~g~sugar$

5 0

3 years ago