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Assoli18 [71]
3 years ago
7

In the Chemical formula H 2o which description explains what the two represents

Chemistry
2 answers:
laila [671]3 years ago
8 0

Answer:

The number of hydrogen atoms

Explanation:

natima [27]3 years ago
3 0

Answer:

The 2 represents 2 hydrogens

:

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A balloon with a volume of 2.0 L at 25°C is placed in a hot room at 35°C. The pressure on the balloon is constant at 1.0 atm. Ho
7nadin3 [17]

Answer:

The volume increases,

Final volume is 2.1L

Explanation:

Based on Boyle's law, the absolute temperature of a gas is directly proportional to the volume of the gas.

As the balloon change increases its temperature, the volume increases

The Boyle's equation is:

V1T2 = V2T1

<em>Where V is volume and T is absolute temperature of 1, initial state and 2, final state of the gas.</em>

<em />

Replacing:

V1 = 2.0L

T2 = 35°C + 273.15 = 308.15K

V2 = ?

T1 = 25°C + 273.15 = 298.15K

2.0L*308.15K = V2*298.15K

2.1L = V2

<h3>Final volume is 2.1L</h3>

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4 0
3 years ago
Which of the following planets has the strongest winds in the solar system? Jupiter Mars Neptune Venus
Aleks04 [339]
The answer is actually Neptune, if you dont believe me look it up. 
6 0
3 years ago
Read 2 more answers
In an acid-base neutralization reaction 38.74 ml of 0.500 m potassium hydroxide (ki) reacts with 50.00 ml of sulfuric acid solut
g100num [7]

Answer: 0.19M

Explanation: 2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O

Using Molarity equation:

n_1M_1V_1=n_2M_2V_2

M_1 = molarity of acid

V_1 = volume of acid

M_2 = molarity of base

V_2 = volume of base

2\times M_1\times 50ml=1\times 0.500M\times 38.74ml

M_1=0.19M

Thus the concentration of the H_2SO_4 solution is 0.19M.

6 0
3 years ago
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The three end stages of stars are Red Giant Phase, Second Red Giant Phase and White Dwarf Phase correct?
solong [7]

Answer: Most of the stars in the universe are main sequence stars — those converting hydrogen into helium via nuclear fusion. A main sequence star may have a mass between a third to eight times that of the sun and eventually burn through the hydrogen in its core. Over its life, the outward pressure of fusion has balanced against the inward pressure of gravity. Once the fusion stops, gravity takes the lead and compresses the star smaller and tighter.

Temperatures increase with the contraction, eventually reaching levels where helium is able to fuse into carbon. Depending on the mass of the star, the helium burning might be gradual or might begin with an explosive flash.

6 0
3 years ago
Mina is attending cooking school, where she prepares different mixtures of ingredients. She works with both homogenous and heter
rodikova [14]

Answer:

Honey is an homogeneous mixture

Salsa is an heterogeneous mixture

Explanation:

Honey is a sweet uniformly colored liquid that can be of a dark variety or of clear golden color. Honey is made in nature by bees from flower nectar and is used as a food additive or sweetener

Honey is a homogeneous mixture because the concentration of the components of honey are uniformly distributed throughout the mixture. Every portion has the same concentration of components

Salsa is a sauce made by mixing chopped tomatoes, onions, chilies, lime juice and seasoning and therefore consists of both solid and liquid components mixed in varying proportion such that part will have continuous  that comes in between different types of solid and no two parts have exactly the same composition

Therefore, salsa is an heterogenous liquid.

3 0
4 years ago
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