All categories

3 years ago

Give 2 Examples of gasses

Chemistry

1 answer:

Greeley [361]3 years ago

8 0

Oxygen, carbon dioxide

You might be interested in

Elements can be described by various properties, and identified by their boiling and melting points. For example, gold melts at

aleksandr82 [10.1K]

Answer:

Explanation:

Melting and boiling point variations are not clear (do not have uniform pattern) in periodic table. But we can see, some elements have higher melting and boiling points and some have less. Here we study melting and boiling points of s, p, d blocks elements. IVAth group elements (C,Si) show high melting and boiling points because they have covalent gigantic lattice structures.

5 0

2 years ago

Read 2 more answers

Someone please help me, the picture is shown above !

Agata [3.3K]

The quality of being easily dissolved in liquid.

Hope this help and Happy holidays

3 0

3 years ago

Read 2 more answers

Mars2501 [29]

Explanation:

area of rectangle=l×b

15=5×b
b=3cm

2.area of rectangle=l×b

28=l×4
l=7cm

3. perimeter of square=4×L

24=4×L
L=6cm

4. perimeter of rectangle=2(L+b)

14=2(4+b)
14=8+2b
2b=6
b=3cm

hope it helps.

4 0

2 years ago

Read 2 more answers

The branch of chemistry that looks at the release of electrical energy is called

sergij07 [2.7K]

B is the correct answer tbh

3 0

3 years ago

When NH3(g) reacts with N2O(g) to form N2(g) and H2O(g), 105 kcal of energy are evolved for each mole of NH3(g) that reacts. Wri

Ganezh [65]

Answer : The balanced chemical equation is,

$2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal$

Explanation :

Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.

The given unbalanced chemical reaction is,

$NH_3(g)+N_2O(g)\rightarrow N_2(g)+H_2O(g)+105kcal$

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the $NH_3$ , the coefficient 3 is put before the $N_2O\text{ and }H_2O$ and the coefficient 4 is put before the $N_2$ .

The energy evolved in this reaction = $105Kcal\times 2=210Kcal$

Thus, the balanced chemical reaction will be,

$2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal$

7 0

3 years ago