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KiRa [710]
3 years ago
8

You have two cups one is 6cm and other 10cm with no measurement and you have to pour 8cm of water into the 10cm cup using the tw

o cup, without measuring it. How can you?
Chemistry
1 answer:
Korolek [52]3 years ago
5 0

Here’s one way to do it.

1. Fill the 6 cm cup.

2. Pour its contents into the 10 cm cup. This leaves 4 cm yet to be filled.

3. Refill the 6 cm cup and use it to fill the 10 cm cup. This leaves 2 cm in the 6 cm cup.

4. Empty the 10 cm cup and add the 2 cm from the 6 cm cup.

5. Refill the 6 cm cup.

6. Pour its contents into the 10 cm cup.

The 10 cm cup now contains 8 cm of water.

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Which two terms below BOTH describe the igneous rock granite?
blsea [12.9K]

Answer:

felsic and extrusive

Explanation:

6 0
4 years ago
A sample of an unknown liquid has a volume of 30.0 mL and a mass of 6 g. What is its density? please Show your work or explain h
Leno4ka [110]

The density of the liquid is 0.2 g/mL.

The mass of the liquid is 6 g.

The volume of the liquid is 30.0 mL.

Density = mass/volume = 6 g/30.0 mL = 0.2 g/mL

3 0
3 years ago
Which of the following ionic compounds has a transition metal in it?
tatuchka [14]

Answer:

Ca2s that is answers and CuSO4is

3 0
3 years ago
What mass of acetylene gas, C2H2, would be produced by complete reaction of 3.75g of calcium carbide
blsea [12.9K]

 The  mass  of C₂H₂  that  would  be  produced by  complete reaction  of 3.75 g  of  calcium  carbide is  1.524 grams


 <u><em>calculation</em></u>

calcium carbide (CaC₂) react with  water(H₂O) to  produce C₂H₂  and Ca(OH)₂  according to  reaction below


CaC₂ +2H₂O   C₂H₂ + Ca(OH)₂


 calculate  the moles of CaC₂

 moles  = mass÷ molar mass

from periodic table the  molar mass   of CaC₂ = 40 + (12 x2) = 64 g/mol

moles is therefore =3.75 g÷ 64 g/mol =0.0586  moles

Use the  mole ratio to determine the  moles of C₂H₂

from equation above  CaC₂: C₂H₂  is 1:1 therefore the  moles of C₂H₂  is also

= 0.0586  moles

mass  of C₂H₂ =  moles x molar mass

from periodic table the  molar mass of C₂H₂  = (12 x 2) + (1 x 2)  = 26 g/mol

mass =0.0586  moles x 26 g/mol =1.524 grams


6 0
3 years ago
How many liters would 30g of Cl2 gas make?
Kryger [21]

Answer:

9.4L

Explanation:

Given parameters:

Mass of Cl₂ gas  = 30g

Unknown:

Volume of gas  = ?

Solution:

To solve this problem, let us assume that this reaction takes place under standard temperature and pressure conditions.

Therefore;

             Volume of gas  = number of moles  x 22.4

To find the number of moles;

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

                  molar mass of  Cl₂ = 2(35.5)  = 71g/mol

            Number of moles  = \frac{30}{71}   = 0.42mole

So;

            Volume of gas = 0.42 x 22.4  = 9.4L

               

3 0
3 years ago
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