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svetlana [45]
3 years ago
6

Can someone help me on this please

Chemistry
2 answers:
creativ13 [48]3 years ago
8 0

Answer:

the answer for 5 is liquid

zhenek [66]3 years ago
6 0
The answer is liquid
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Radiant heat transfers energy
il63 [147K]

so????? any question?

5 0
3 years ago
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Suppose two 200.0-L tanks are to be filled separately with the gases helium and hydrogen. What mass of each gas is needed to pro
Aneli [31]

Answer:

Mass of helium  = 4426.9524 g

Mass of hydrogen gas = 2213.4762 g

Explanation:

Pressure = 135 atm

Temperature = 24 °C

Volume = 200 L

Number of moles = ?

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (24 + 273.15) K = 297.15 K  

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

135 atm × 200 L = n × 0.0821 L.atm/K.mol × 297.15 K  

⇒n = 1106.7381 moles

<u>For helium gas:</u>

Molar mass = 4 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

1106.7381= \frac{Mass}{4}

Mass= 4426.9524\ g

<u>For hydrogen gas:</u>

Molar mass = 2 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

1106.7381= \frac{Mass}{2}

Mass= 2213.4762\ g

4 0
4 years ago
A chemist examines an ionic compound that contains magnesium and one other element. She
Igoryamba

Group 7

Explanation:

The unknown element belongs to the seventh group on the periodic table of elements.

Ionic bonds are usually formed between metals and nonmetals. They formed by the transfer of electrons from the less electronegative specie to the more electronegative one.

The metals usually lose electron because they are highly electropositive species.

  • If we have a magnesium atom with two valence electrons.
  • To form ionic bonds, it must transfer the two electrons to another atom.
  • The other atom, a nonmetal must be ready to accommodate and receive the donated electrons.
  • This ensure that its own octet is complete.
  • Group 6 elements requires 2 electrons to have a complete octet.
  • They can receive the two electrons

But we were told that there are two atoms of that element for each of the magnesium atom;

  the atom must have a capacity of collecting one electron each to be stable.

Such atoms are found in Group 7 on the periodic table.

learn more:

Ionic bond brainly.com/question/6071838

#learnwithBrainly

3 0
3 years ago
4Cuo - 2Cu,O + O, AH = 288 kJ
Anna35 [415]
I am a little slow i cannot help with these that why i got this app lol
6 0
3 years ago
Write the chemical equation for the reaction whose enthalpy change is the standard enthalpy of formation of fructose, C6H12O6(s)
ziro4ka [17]

Answer:

6 C(s) + 6_{H2}(g) + 3_{O2}(g)

Explanation:

The chemical equation of the reaction is as follows

According to the question, data provided in the question is shown below:

C_6H_12O_6

The C = Carbon and its standard state is Graphite C(s)

The H = Hydrogen and its standard state is H_2 (s)

The O = Oxygen and its standard state is O_2 (s)

Now the chemical equation for the reaction is

6 C(s) + 6_{H2}(g) + 3_{O2}(g)

5 0
4 years ago
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