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jasenka [17]
3 years ago
11

What makes the periodic table arrangement so unique and useful?​

Chemistry
1 answer:
Zepler [3.9K]3 years ago
8 0
Elements are ordered from left to right, increasing atomic number as they go. The periodic table allows us to find out and predict things about elements that haven’t been discovered yet!
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Formulate a hypothesis based on something recently observed.
lara [203]

Answer:

If garlic repels fleas, then a dog that is given garlic every day will not get fleas. Bacterial growth may be affected by moisture levels in the air. If sugar causes cavities, then people who eat a lot of candy may be more prone to cavities.

Explanation:

3 0
3 years ago
Does nitrogen triiodide dipole?.
Dmitriy789 [7]
Answer: Yes

Explanation:

due to the nitrogen atom and its lone pair is in opposition to the moment associated with the three polar N-F bonds in NF3. NCl3 also has a small dipole moment
8 0
3 years ago
Calculate the grams of nitrogen in 125 g of NH4NO3
Marta_Voda [28]

Answer:

43.75 g of Nitrogen

Explanation:

We'll begin by calculating the mass of 1 mole of NH₄NO₃. This can be obtained as follow:

Mole of NH₄NO₃ = 1 mole

Molar mass of NH₄NO₃ = 14 + (4×1) + 14 + (3×16)

= 14 + 4 + 14 + 48

= 80 g/mol

Mass of NH₄NO₃ =?

Mass = mole × molar mass

Mass of NH₄NO₃ = 1 × 80 = 80 g

Next, we shall determine the mass of N in 1 mole of NH₄NO₃.

Mass of N in NH₄NO₃ = 2N

= 2 × 14

= 28 g

Thus,

80 g of NH₄NO₃ contains 28 g of N.

Finally, we shall determine the mass of N in 125 g of NH₄NO₃. This can be obtained as follow:

80 g of NH₄NO₃ contains 28 g of N.

Therefore, 125 g of NH₄NO₃ will contain = (125 × 28) / 80 = 43.75 g of N.

Thus, 125 g of NH₄NO₃ contains 43.75 g of Nitrogen

5 0
3 years ago
Which formula represents the compound commonly known as phosphine?
sineoko [7]
Your answer should be c ph3
3 0
3 years ago
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Why is DDT a dangerous environmental pollutant?
Slav-nsk [51]

it is because it reacts readily with other compounds


4 0
3 years ago
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