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White raven [17]
2 years ago
11

Characteristic ions of water: OH- and H3O+​

Chemistry
1 answer:
oee [108]2 years ago
3 0

Answer:

H2O

Explanation:

water is made up of 1 hydrogen snd 2 oxygen

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A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin
lorasvet [3.4K]

Answer : The mass of the water in two significant figures is, 3.0\times 10^1g

Explanation :

In this case the heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of iron metal = 0.45J/g^oC

c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of iron metal = 32.3 g

m_2 = mass of water = ?

T_f = final temperature of mixture = 59.2^oC

T_1 = initial temperature of iron metal = 21.9^oC

T_2 = initial temperature of water = 63.5^oC

Now put all the given values in the above formula, we get

32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC

m_2=30.16g\approx 3.0\times 10^1g

Therefore, the mass of the water in two significant figures is, 3.0\times 10^1g

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3 years ago
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A solution is a homogeneous mixture of one or more solutes dissolved in a solvent. A specific volume of solvent is only able to
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A neutral atom becomes a positive ion when it
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Answer:

Neutral atoms can be turned into positively charged ions by removing one or more electrons.

Explanation:

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Using a ph meter, you find the ph of an unknown solution to be 8. 0. How would you describe this solution?.
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Just Barely Base/Neutral

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a pH of 8.0 is greater than Neutral (7.0) but is still neutral due to it being more neutral than a base

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