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My name is Ann [436]
2 years ago
10

Đơn chất nào sau đây tác dụng với dung dịch axit sunfuric loãng sinh ra khí ?

Chemistry
1 answer:
viva [34]2 years ago
6 0

Answer:

C. Al

Explanation:

2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2

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The atomic nucleus contains two subatomic particles, the proton and the neutron. Atoms of different elements have different numb
Nostrana [21]

Answer:

The correct option is;

A) 1 to 1.

Explanation:

A stab;e nuclei requires the presence of a neutron to accommodate the the protons repulsion forces within the nucleus. An increase in the number of protons should be accompanied by an even more instantaneous increase in the number of neutrons to balance the forces in the nucleus. If there is an excess of neutrons or a deficit in protons a state of unbalance exists in the nucleus, which results to nuclear instability.

Therefore, the ratio of neutrons to protons is an appropriate way in foretelling nuclear stability and a stable nuclei is known to have a proton to neutron ratio of 1:1 and the number of protons and neutrons in the stable nuclei are usually even numbers.

4 0
2 years ago
Help! I can't find this answer anywhere!
Gnom [1K]
What is the question that needs an answer?
8 0
3 years ago
How many atoms are in a molecule of hydrogen peroxide?
Alenkasestr [34]
2 Hydrogen and 2 Oxygen
7 0
3 years ago
What are 6 types of energies except Potential and Kinetic energy.
aivan3 [116]

Answer:

The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

Explanation:

Hope this helps :D

7 0
3 years ago
Do you know how to do this? if you have 4 grams of carbon-14, how much carbon 14 remains after 11,460 years? the half life is 5,
Delvig [45]
Carbon dating has<span> given archeologists a more accurate method by which they </span>can<span> determine the age of ancient artifacts. The </span>halflife<span> of </span>carbon 14<span> is </span>5730<span> ± 30 </span>years<span>, and the method of dating lies in trying to determine how </span>much carbon 14<span> (</span><span>the radioactive isotope of carbon) is present in the artifact and comparing it to levels</span>
6 0
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