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3 years ago

What phase(s) would you expect to observe when the substance is at a temperature of 275 kelvin?

1 answer:

4 0

The phase of a substance at a temperature of 275 K or 1.85 degrees Celsius can be any of the three phases namely a solid, a liquid and a gas. This depends on the pressure where the substance is subjected. Also, the phase can be determined by a phase diagram where it shows the phase of a certain substance at a specific temperature and pressure.

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6) A 14.5 g sample of sodium chloride reacts with excess fluorine gas according to

Ann [662]

The mass of chlorine gas produced by 14.5 grams of sodium chloride is 10.42 g.

The mass of chlorine gas produced by 14.5 grams of sodium chloride is 8.81 g.

The given parameters;

mass of the sodium chloride, = 14.5 g
2NaCl(s) + F2(g) → 2NaF(s) + Cl2(g)

In the reaction above, we can deduce the following;

molecular mass of 2Nacl = 2(58.44) = 116.88 g

molecular mass of 2NaF = 2(42) = 84 g

molecular mass of Cl2 = 71 g

The mass of sodium fluoride produced by 14.5 grams of sodium chloride is calculated as follows;

116.88 g of NaCl --------------- 84 g of NaF

14.5 g of NaCl ------------------- ?

$= \frac{84 \times 14.5}{116.88} \\\\= 10.42 \ g$

The mass of chlorine gas produced by 14.5 grams of sodium chloride is calculated as follows;

116.88 g of NaCl --------------- 71 g of Cl2

14.5 g of NaCl ------------------- ?

$= \frac{14.5 \times 71}{116.88} \\\\= 8.81 \ g$

Learn more here:brainly.com/question/8470145

8 0

3 years ago

The primary reason some parts of Earth are hotter than other parties because the hotter parts of Earth

Shtirlitz [24]

Answer: the core

Explanation:

6 0

3 years ago

Question 10 (1 point)

Vinil7 [7]

Answer:

A,C,D,B

Explanation:

1killometer=1000m

1mm=0.001m

1cm=0.01m

base unit of length is meter

7 0

3 years ago

Type the correct answer in the box.

Murljashka [212]

Answer:

a= In scientific notation

6.96×10⁵ Km

b =In expanded notation

0.00019 mm

Explanation:

Given data:

Radius of sun = 696000 Km

size of bacterial cell = 1.9 ×10⁻⁴ mm

Radius of sun in scientific notation = ?

Size of bacterial cell in expanded notation = ?

Solution:

Radius of sun:

696000 Km

In scientific notation

6.96×10⁵ Km

Size of bacterial cell:

1.9 ×10⁻⁴ mm

In expanded notation

1.9/ 10000 = 0.00019 mm

8 0

3 years ago

A solid precipitate is formed from the reaction of lead nitrate and sodium chromate. What would be the best method to separate t

Sliva [168]

The appropriate response is filtration. Filtration is any of different mechanical, physical or organic operations that different solids from liquids by including a medium through which just the liquid can pass. The liquid that goes through is known as the filtrate

8 0

3 years ago

Read 2 more answers