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Alexeev081 [22]
3 years ago
9

In a sample of a solid the particles are

Chemistry
1 answer:
Andre45 [30]3 years ago
6 0
I believe the answer is B.
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When the moon is between the earth and the sun how is the moon most likely seen
kvasek [131]

Its seen like the lunar shadow

7 0
4 years ago
What is the mass of 1 mole of water
Lady bird [3.3K]

Answer:

18.01528 g/mol

Explanation:

Using the equation to figure this out

4 0
4 years ago
Read 2 more answers
In H2SO4, the oxidation number of H is , that of S is , and that of O is .
adell [148]

Answer:

Explanation:

A) In H2SO4, the oxidation number of H is , that of S is , and that of O is .

In H₂SO₄ the oxidation sate of H is +1 (H₂= +2) that of sulfur is +6 and O is -2 (O₄= -8)

In SO₄ the oxidation state is -2, because negative and positive charges are not equal. That's why two hydrogen atoms are attached with one SO₄ to balance the charge.

B) In CaSO4, the oxidation number of Ca is , that of S is . , and that of O is .

In CaSO₄ the oxidation sate of Ca is +2 that of sulfur is +6 and O is -2 (O₄= -8)

In SO₄ the oxidation state is -2, because negative and positive charges are not equal. That's why one calcium atoms is attached with one SO₄ to balance the charge.

C) In HF, the oxidation number of H is , and that of F is .

In HF the oxidation state of hydrogen is +1 and that of fluorine is -1. Both form ionic compound.

4 0
3 years ago
Characteristics of the water at the mountain source: Speed: Temperature Oxygen Level Nutrient Level
aksik [14]

Describe the characteristics of the water at the mountain source:

Answer:

The answer is below

Explanation:

Speed: there will be faster speed due to the steep slope movement of water from the mountain.

Temperature: there will be lower temperatures as a result of the faster speed of water movement which reduces the influence of solar radiation on it.

Oxygen: the oxygen content is higher due to little or no residue particles present in it.

Nutrient Level: this is considered somewhat low as a result of the water coldness and speed which does not support the nutrition base to form.

6 0
3 years ago
Which of the pairs of compounds below could be used to prepare a buffer solution? hcl and nacl hc2h3o2 and kc2h3o2 nh3 and nh4no
Basile [38]
We have that the correct answer is the last one. NH4NO3 is called ammonium nitrate and is the salt that appears from combining HNO3 (acid) with NH3 (ammonia, base). We have then that a solution of this type is a buffer solution because ammonia is a weak base and the salt contains its conjugate acid (definition of buffer solution). The 2nd example is wrong because both potassium acetate and Acetic Acid are acids; no conjugate base is involved. HCI and NaCl are pairs of conjugacy (HCI is an acid and NACI can be produced by NaOH and HCI), but HCI is a strong acid and NACI is a salt. Hence, it cannot be a buffer solution (weak acid needed). Weak acid or base means that it does not fully break down in ions when in water.
8 0
4 years ago
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