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Leno4ka [110]
3 years ago
11

Periodic Table:Question 6

Chemistry
1 answer:
nika2105 [10]3 years ago
4 0

Answer:

The position of an element on the periodic table is determined by how many protons it has in its nucleus.

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What is the molar mass of h2
alekssr [168]

Answer:

The answer is one

Explanation:

I will just type any rubbish here bcuz my answer should be more than 20 words..... Just know the answer is 1

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True or False: Your blood is a neutral solution.
MaRussiya [10]

Answer:

True

Explanation:

Neutral solutions maintain a pH of 7. Water and human blood are great examples of neutral solutions. Acids mixed with bases can be neutralized and given a pH of 7.

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The metal which does react vigorously with halogens to form halides?
pshichka [43]

Answer:

RUBIDIUM

Explanation:

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a mineral a.has a chemical formula b. occurs naturally c. has a characteristic internal structure d.all of the above
Anuta_ua [19.1K]
Answer: option d. all of the above.

Explanation:

A mineral is an element or a inorganic compound that existes in nature as solid cristals; usually combined with other minerals in ores.

Some examples of minerals, among many, are titania, wich is TiO2, zirconia, which is ZrO2, silica, which is SiO2, gold, Au, silver, Ag.

As you see the definition and examples given meet the whole features included in the stament: a. the have a chemical formula, b they occur naturally, and c.have a characteristic internal structure (that is the way how the atoms are arranged in the specifi cristal).
4 0
3 years ago
Read 2 more answers
The temperature of 6.24 L of a gas is increased from 25.0°C to 55.0°C at constant pressure. The new volume of the gas is Questio
Sphinxa [80]

Answer:

Heating this gas to 55 °C will raise its volume to 6.87 liters.

Assumption: this gas is ideal.

Explanation:

By Charles's Law, under constant pressure the volume V of an ideal gas is proportional to its absolute temperature T (the one in degrees Kelvins.)

Alternatively, consider the ideal gas law:

\displaystyle V = \frac{n \cdot R}{P}\cdot T.

  • n is the number of moles of particles in this gas. n should be constant as long as the container does not leak.
  • R is the ideal gas constant.
  • P is the pressure on the gas. The question states that the pressure on this gas is constant.

Therefore the volume of the gas is proportional to its absolute temperature.

Either way,

V\propto T.

\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1}.

For the gas in this question:

  • Initial volume: V_1 = \rm 6.24\; L.

Convert the two temperatures to degrees Kelvins:

  • Initial temperature: T_1 = \rm 25.0\;\textdegree{C} = (25.0 + {\rm 273.15})\; K = 298.15\;K.
  • Final temperature: T_1 = \rm 55.0\;\textdegree{C} = (55.0 + {\rm 273.15})\; K = 328.15\;K.

Apply Charles's Law:

\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1} = \rm 6.24\;L \times \frac{328.15\; K}{298.15\;K} = 6.87\;L.

7 0
3 years ago
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