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Finger [1]
3 years ago
10

A wooden block has a mass of 20 g and dimensions of 5 cm x 1 cm x 1 cm.

Chemistry
1 answer:
marta [7]3 years ago
4 0

Answer:

V = 5 cm³

ρ = 4 g/cm³

Explanation:

Step 1: Calculate the volume (V)

We have a wooden cuboid of dimensions 5 cm × 1 cm × 1 cm. We can calculate its volume using the following expression.

V = 5 cm × 1 cm × 1 cm

V = 5 cm³

Step 2: Calculate the density (ρ)

The density is equal to the mass divided by the volume.

ρ = m / V

ρ = 20 g / 5 cm³

ρ = 4 g/cm³

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How many mole of HCL is produced if 4g of hydrogen is completely reacted with chlorine​
Elenna [48]

Answer:

4 moles of HCl are produced.

Explanation:

Given data:

Mass of hydrogen = 4 g

Number of moles of HCl = ?

Solution:

H₂ +  Cl₂   →    2HCl

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/2 g/mol

Number of moles = 2 mol

now we will compare the moles of hydrogen and HCl.

                 H₂        :        HCl

                  1          :          2

                  2         :         2/1×2 = 4 mol

Thus, 4 moles of HCl are produced.

5 0
3 years ago
Students were given four unknown substances and asked to observe their
alexandr1967 [171]

Answer:

b

Explanation:

3 0
3 years ago
5. Didderent betwen group and period.​
Ronch [10]
A group goes vertically and a period goes horizontally.

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3 0
3 years ago
Which of these equations best summarizes photosynthesis?
elena-14-01-66 [18.8K]

Answer: C

Explanation:

                                              Sunlight

6 CO2       +          6 H2O   -------------->            C6H12O6    +        6 O2

                                            Chlorophyll

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7 0
3 years ago
Two tons of water is pumped into a tank 15 ft. High in 5 minutes. Determine the power output of the pump. (Note: One ton is equa
Semmy [17]

Answer:

200 lb•ft/s

Explanation:

From the question given above, the following data were obtained:

Force (F) = 2 tons

Time (t) = 5 mins

Height (h) = 15 ft

Power (P) =?

Next, we shall convert 2 tons to pound. This can be obtained as follow:

1 ton = 2000 lb

Therefore,

2 tons = 2 × 2000

2 tons = 4000 lb

Next, we shall convert 5 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

5 mins = 5 × 60

5 mins = 300 s

Finally, we shall determine the power of the pump. This can be obtained as follow:

Force (F) = 4000 lb

Time (t) = 300 s

Height (h) = 15 ft

Power (P) =?

P = F × h / t

P = 4000 × 15 / 300

P = 60000 / 300

P = 200 lb•ft/s

Thus, the power of the pump is 200 lb•ft/s

5 0
3 years ago
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