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notka56 [123]
3 years ago
15

Which best describes the relationship between air temperature and high and low pressure air

Chemistry
1 answer:
Vsevolod [243]3 years ago
5 0
Snkxmskkxkskkxlalxkmmskzkzk
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Which atomic model was proposed as a result of J.J Thomson work
kow [346]
The atomic model that J . J Thomson was famous for noting would be the plum pudding model, where he proposed that electrons would actually be embedded as raisins within the atomic nucleus. I believe.
5 0
3 years ago
If a compound has a composition of 82% nitrogen and 18% hydrogen, what is the empirical formula for this compound
Damm [24]

Answer: The empirical formula for the given compound is NH_3

Explanation : Given,

Percentage of H = 18 %

Percentage of N = 82 %

Let the mass of compound be 100 g. So, percentages given are taken as mass.

Mass of H = 18 g

Mass of N = 82 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Hydrogen = \frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{18g}{1g/mole}=18moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{82g}{14g/mole}=5.8moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.8 moles.

For Hydrogen  = \frac{18}{5.8}=3.10\approx 3

For Nitrogen = \frac{5.8}{5.8}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of H : N = 3 : 1

Hence, the empirical formula for the given compound is NH_3

3 0
3 years ago
An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. Only 2.5 g of this isotope is now left. What is its
MA_775_DIABLO [31]
1.25, you divide 2.5 by 80, then times by 40
3 0
3 years ago
Read 2 more answers
Correct the name to match the formula of the following compounds: (a) calcium(ll) dichloride. CaClZ; (b) copper(|l) oxide. Cu20;
tangare [24]

Answer:

Explanation:

Incorrect name                                  correct name

a) calcium dichloride                         calcium chloride

b) copper(II) oxide                               copper(I) oxide

c) stannous tetrafluoride                      stannic fluoride

d) hydrogen chloride acid                     hydrochloric acid

5 0
3 years ago
Which statement explains why H2O has a
Rama09 [41]

Answer:

3

Explanation:

H2O has a higher intermolecular force (hydrogen bonding) where N2 only has London Dispersion.

5 0
2 years ago
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