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EastWind [94]
3 years ago
7

Which of the following are properties of mechanical waves?

Chemistry
1 answer:
sergeinik [125]3 years ago
5 0
What’s the following???
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Zinc put in concertrated sodium hydroxide
Readme [11.4K]
What are you asking for
8 0
3 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
3 years ago
How many grams of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O?
shepuryov [24]

Explanation:

Molarity is defined as number of moles per liter of solution.

Mathematically,         molarity = \frac{no. of moles}{Volume (in L) of solution}

It is given that molarity is 0.0800 M and volume is 50.00 mL or 0.05 L.

           molarity = \frac{no. of moles}{Volume of solution in liter}

            0.0800 M = \frac{no. of moles}{0.05 L}

            no. of moles = 1.6 mol

Therefore, molar mass of cupric sulfate pentahydrate is 249.68 g/mol. So, calculate the mass as follows.

                No. of moles = \frac{mass in grams}{molar mass}

             mass in grams = no. of moles \times molar mass of CuSO_{4}.5H_{2}O

                                       = 1.6 mol \times 249.68 g/mol

                                       = 399.488 g

Thus, we can conclude that 399.488 g of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O.

4 0
3 years ago
A fixed, single pulley that is used to lift a block does which one of the following?
olga55 [171]
The answer is C, it makes the block easier to lift by changing the direction of the force needed to lift it 
4 0
3 years ago
Read 2 more answers
when you burn 2 L of propane (C3H8) at stp , you find 5.6L of carbon dioxide has been produced what is the percent yeild
Oksanka [162]

Answer:

93%

Explanation:

First write the balanced reaction

C3H8 + 5O2 --> 3CO2 +4H2O

2nd, find the theoretical yield

2L C3H8 (1mol/22.4L) (3 mol CO2/1 molC3H8) (22.4 L/ 1mol) = 6L

3rd, Find percent yield

%yield = (actual / theoretical) x100 = (5.7/6) x 100 = 93%

7 0
3 years ago
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