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Georgia [21]
3 years ago
12

The observation that 4.0 g of hydrogen reacts with 32.0 g of oxygen to form a product with O:H mass ratio-8:1, and 6.0 g of hydr

ogen reacts with 48.0 g of oxygen to form the same product with O/H mass ratio = 8:1 is evidence for the law of 1. multiple proportions 2. erergy conservation. 3. mass conservation 4. definite proportion
Chemistry
1 answer:
irinina [24]3 years ago
8 0

Answer:

Law of definite proportion

Explanation:

As per law of definite proportion, ratio of elements present in a compound is always fixed irrespective of the  source, amount and method of preparation.

In the given case, the hydrogen and oxygen react with each other to form a compound. The ratio of oxygen and hydrogen is fixed which is 8 : 1 and this ratio does not change upon changing amount of oxygen and hydrogen.

So, the this experiment support the law of definite proportion.

Therefore, the correct option is option 4

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Answer:The 1st Quarter Moon is a primary Moon phase when we can see exactly half of the Moon's surface lit up. ... The First Quarter Moon rises around midday and is visible in the day sky. ... when the Moon has reached the first quarter of its orbit around Earth, hence the name. ... Full Moon Names · Taking pictures of the Moon.

Explanation:

6 0
3 years ago
If 5.0 kJ of energy is added to a 15.5-g sample of water at 10.°C, the water is Group of answer choices
BaLLatris [955]

Answer:

The water is completely vaporized at this stage.

Explanation:

The complete question is

If 5.0 kJ of energy is added to a 15.5-g sample of water at 10.°C, the water is

-boiling

-completely vaporized

-frozen solid

-decomposed

-still a liquid

Energy added = 50 kJ = 50000 J

mass of water = 15.5 g = 0.0155 kg

temperature of water = 10 °C

We know that the energy posses by a mass of water at a given temperature is given as

H = mcT

where H is the energy possessed by the mass of water

m is the mass of the water

c is the specific heat capacity of water = 4200 J/ kg- °C

T is the temperature of the water

substituting values, the energy of this amount of water is

H = 0.0155 x 4200 x 10 = 651 J

If 50 kJ is added to the water, the energy increases to

50000 J + 651 J = 50651 J

Temperature of this water at this stage will be gotten from

H = mcT

we solve for the new temperature

50651 = 0.0155 x 4200 x T

50651 = 65.1 x T

T = 50651/65.1 = 778.05 °C

This temperature is well over 100 °C, which is the vaporization temperature of water, but less than 3000 °C for its molecules to decompose.

3 0
3 years ago
Now that you have the knowledge of the highest specific heat capacity and lowest porosity, which material would you choose to bu
Svet_ta [14]

Answer:

Now that you have the knowledge of the highest specific heat capacity and lowest porosity, which material would you choose to build Rover's new doghouse roof?

Oak has the highest heat capacity; therefore, oak can absorb a lot of heat without raising its temperature. This is good for very hot areas. Concrete has the lowest porosity so water will not leak through its pores and drip into the doghouse. This is good for rainy areas. However, clay is second on both lists and might be a good choice overall for hot and rainy weather conditions. Rover should be happy with this.

xXxAnimexXx

Have a great day!

7 0
3 years ago
Read 2 more answers
Match the term with its description.
Yuliya22 [10]

Photosynthesis is The process that uses sunlight energy to convert water, and carbon dioxide into high energy glucose, and oxygen.




Chloroplast is This organelle of a cell, is where chlorophyll is found. The organelle most involved in photosynthesis.








Hope that helps!!! :)



Chlorophyll is a green pigment present in all plants, that absorbs light to provide energy for photosynthesis.




Energy is the ability to do work, That can produce physical changes within living, and non-living systems.

7 0
3 years ago
When a bond between a hydrogen atom and a sulfur atom is formed, electrons are?
nekit [7.7K]
They become an ionic bond, and are weakly bonded compared to covalently bonded atoms
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3 years ago
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