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Varvara68 [4.7K]
3 years ago
10

Positional isomers

Chemistry
1 answer:
zimovet [89]3 years ago
7 0
<span>The answer is D)<em> </em>are compounds that have the same number and types of atoms but are arranged differently.

Source: <em>just took the test :)</em></span>
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The volume of a given mass of agas is 360cm cubic at 50 degrees and 700 milimetres Hg .find it's volume at s.t.p​
saveliy_v [14]

Answer:

V₂  =279.9 cm³

Explanation:

Given data:

Initial volume = 360 cm³

Initial temperature = 50°C

Initial pressure = 700 mmHg

Final volume = ?

Final temperature = 273 k

Final pressure = 1 atm

Solution:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Solution:

<em>We will convert the mmHg to atm.</em>

700/760 = 0.92 atm

<em>and °C to kelvin.</em>

50+273 = 323 K

P₁V₁/T₁ = P₂V₂/T₂

V₂ = P₁V₁ T₂/ T₁ P₂

V₂ = 0.92 atm × 360 cm³ × 273 K / 323 K ×1 atm

V₂  =  290417.6 atm .cm³.  K  / 323 k. atm

V₂  =279.9 cm³

8 0
3 years ago
Given that equation Na+(s)O2–&gt; Na2O. Find the mass of sodium needed to produce 12.5 grams of sodium oxide.
Norma-Jean [14]

Answer: 9.27 g of Na

Explanation:Please see attachment for explanation

7 0
3 years ago
What occurs during a chemical reaction? *
Romashka [77]

Answer:

c. Atoms of two or more elements bond together

Explanation:

a chemical reactions forms products ( new substances); where it rearranges themselves to form new bonds.

7 0
3 years ago
Read 2 more answers
3 kelebihan watak utama dalam novel meniti impian​
In-s [12.5K]
I honestly don’t know sorry
7 0
3 years ago
Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation:
egoroff_w [7]

The grams  of  oxygen that are required  to produce 1  mole  of H₂O  is 16 g ( answer  B)

<u><em> calculation</em></u>

2 CH₄  + 2NH₃ +3 O₂ → 2HCN  + 6H₂O

step 1: use the mole ratio to find moles of O₂

from equation above the  mole ratio  of O₂: H₂O  is 3:6 therefore the moles of O₂  = 1 mole x3/6 =0.5 moles

step  2: find   mass of O₂

mass= moles x molar mass

from periodic table the molar mass  of O₂ = 16 x2= 32 g/mol

mass O₂ = 0.5 moles x 32 g/mol = 16 g (answer B)

6 0
3 years ago
Read 2 more answers
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