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sveticcg [70]
1 year ago
13

Solve the simultaneous equation -4x+3y=1 6x-y=2

Chemistry
2 answers:
Maslowich1 year ago
5 0

Answer:

x = 1/2 y = 1

andrew11 [14]1 year ago
5 0

Step-by-step explanation:

Now form equation for y,

→ 6x - y = 2

→ y = 6x - 2

Then the value of x will be,

→ -4x + 3y = 1

→ -4x + 3(6x - 2) = 1

→ -4x + 18x - 6 = 1

→ 14x = 1 + 6

→ x = 7/14

→ [ x = 1/2 ]

Hence, the value of x is 1/2 (or) 0.5.

Now the value of y will be,

→ y = 6x - 2

→ y = 6(1/2) - 2

→ y = 3 - 2

→ [ y = 1 ]

Hence, the value of y is 1.

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The equation below shows lithium reacting with nitrogen to produce lithium nitride. 6Li + N2 2Li3N If 12 mol of lithium were rea
Andreyy89

Answer:

4 mol  of lithium nitride would be produced

Explanation:

6Li + N2  → 2Li3N

This equation means that 6 mol of lithium are reacted with 1 mol of nitrogen to make, 2 mol of lithium nitride.

So this is the rule of three to find out, how many moles of lithium nitride are been made, from 12 mol of Li.

6 Li _____ 2 Li3N

12 Li ________ (12. 2) / 6 = 4 moles

5 0
4 years ago
Read 2 more answers
Sulfur and oxygen form both sulfur dioxide and sulfur trioxide. When samples of these are decomposed, the sulfur dioxide produce
bezimeni [28]

<u>Answer:</u>

<u>For A:</u> The mass of oxygen per gram of sulfur for sulfur dioxide is 0.997 g

<u>For B:</u> The mass of oxygen per gram of sulfur for sulfur trioxide is 1.5 g

<u>Explanation:</u>

  • <u>For A:</u>

The chemical equation for decomposition of sulfur dioxide follows:

SO_2\rigtarrow S+O_2

We are given:

Mass of sulfur = 3.47 g

Mass of oxygen = 3.46 g

To calculate the mass of oxygen per gram of sulfur, we apply unitary method:

For every 3.47 g of sulfur, 3.46 g of oxygen will form.

So, for 1 gram of sulfur, \frac{3.46g}{3.47g}\times 1g=0.997g of oxygen will form.

Hence, the mass of oxygen per gram of sulfur for sulfur dioxide is 0.997 g

  • <u>For B:</u>

The chemical equation for decomposition of sulfur trioxide follows:

2SO_3\rigtarrow 2S+3O_2

We are given:

Mass of sulfur = 5.50 g

Mass of oxygen = 8.25 g

To calculate the mass of oxygen per gram of sulfur, we apply unitary method:

For every 5.50 g of sulfur, 8.25 g of oxygen will form.

So, for 1 gram of sulfur, \frac{8.25g}{5.50g}\times 1g=1.5g of oxygen will form.

Hence, the mass of oxygen per gram of sulfur for sulfur trioxide is 1.5 g

3 0
3 years ago
Para el elemento de Z-56 b, que formula minima tiene el compuesto que forma con 17-cl¿ c, que tipo de union hay en dicho compues
inessss [21]

Answer:

ver explicacion

Explanation:

El elemento que tiene el número atómico 56 en la tabla periódica del bario. El bario es un elemento del grupo dos.

Se combina con el cloro para formar cloruro de bario. que tiene la fórmula BaCl2 de acuerdo con la valencia de ambos elementos.

El cloruro de bario es un compuesto iónico.

5 0
3 years ago
¿Quién estableció el concepto moderno de elemento?
Zina [86]

Answer:

Robert Boyle

Explanation:

En muchos textos se suele considerar a Robert Boyle como el científico que introdujo en la Química un concepto de elemento diferente al empleado por los aristotélicos o por los alquimistas y que sirvió de antecedente al que formulara Lavoisier en 1789.

7 0
3 years ago
Not including the noble gases, which area of the periodic table has the highest electronegativities?
Anna71 [15]
The answer is the upper right Fluorine is the most electronegative. 
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4 years ago
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