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lawyer [7]
4 years ago
11

17 Which substance can not be broken down by a chemical change?(1) ammonia (3) propanal

Chemistry
2 answers:
lyudmila [28]4 years ago
6 0
Zirconium cannot be broken down by a chemical change, because it is an element. The others are all molecules.
Sindrei [870]4 years ago
5 0
(4) Zirconium

Because it cannot be broken down by chemical change neither a chemical property. It is an element. It consists of only one atom.
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Q2. The table gives the composition of three particles.
Kisachek [45]

Answer:

The proton and electrons are equal,

15protons and 15electrons

Explanation:

An atom is the smallest electrical neutral particle of an element so it means that every atom have same number of protons and electrons.

8 0
3 years ago
How many grams of ammonium chloride (NH4Cl) would be required to make a saturated solution in 1000 grams of water at 50 degrees
Pavel [41]
<span>Since,
1000 grams of water = 1000 mL of water</span><span>
So, 
At any of the given temperature:
</span>1000 mL = 10 x 100 mL
<span>
moles of NH4Cl = 53.5/53.49
                          = 1.0 m
                          = 1.0 mol/Kg
Delta T = 2 x 1.86 x 1.0
             = 3.72 c
             = - 3.72 °C</span>
3 0
3 years ago
Which of the following is not a statement of Dalton's atomic theory of matter?a. Elements are made of atomsb. Atoms of a given e
Alona [7]

Answer:

c. The atoms of one element can be identical to the atoms of another element.

Explanation:

<em>Which of the following is not a statement of Dalton's atomic theory of matter?</em>

<em>a. Elements are made of atoms.</em> TRUE. An atom is the smallest particle of a chemical element that can exist.

<em>b. Atoms of a given element are identical.</em> TRUE. The only slight difference is in the mass of isotopes.

<em>c. The atoms of one element can be identical to the atoms of another element.</em> FALSE. The atoms of different elements are different from one to another.

<em>d. A given compound always has the same number and kinds of atoms. </em>TRUE. This is known as Dalton's law of constant composition.

3 0
3 years ago
The reaction of ammonia and hydrogen chloride gas:
oee [108]
It's replacement reaction. Hope it helped
8 0
3 years ago
Hwlp meeeeeeeeeeeeeeeeeeee
Vanyuwa [196]
The most appropriate answer is C !!
4 0
3 years ago
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