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AVprozaik [17]
3 years ago
7

Need help balancing equations please.

Chemistry
1 answer:
densk [106]3 years ago
3 0

Answer:

A, 4,3,2

B, 1,1,2

C, 1,1,1,2

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Determine which decay process is being described in each case. the atomic number deceases by one, and the atomic mass is unchang
Sav [38]
1. The atomic number deceases by one and the atomic mass is unchanged - β⁺/positron emission. In this a proton is converted to a neutron, hence no net change in mass. Since a proton is converted to neutron, the daughter nuclide's proton number /atomic number decreases by 1. Then atomic number decreases by 1 and no change in mass.

2.the atomic number decreases by two, and the atomic mass decreases by four - alpha decay / ⁴₂α. alpha particles have 2 neutrons and 2 protons. Since 2 protons and 2 neutrons are emitted, the mass of the nuclide decreases by 4. Since 2 protons have been emitted, this results in atomic number decreasing  by 2.

3.<span>the atomic number increases by one, and the atomic mass remains unchanged. - </span>β⁻ beta decay. In this type of decay - beta decay , a neutron is converted to a proton, therefore no net change in mass. Since a proton is formed, atomic number increases by 1. Therefore atomic number increases by 1 and no change in mass.
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3 years ago
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How has the modern research in chemistry impacted society
Anastaziya [24]

Answer:

Here is ur answer;

  • Modern research in chemistry has impacted society by allowing us to make informed decision. With the knowledge of chemistry, you can form better opinions about today's news. You will be able to distinguish the truth from the lies in environmental reporting and better understand the meaning of a chemical spill.
  • Modern research in chemistry can lad to technologiesthat aim to benefit the environment, conserve and produce energy, improve human life, and expand our knowledge of the universe. Modern research in chemistry has impacted society by gathering data from afar analyse matter that is brought back to the earth.
  • The industrial application of chemistry directly affects our daily lives --- what to eat, what we wear, our transport, the technology we use, how we treat our illness and how get electricity -- to name a few. Research is constantly deepening our understanding of chemistry and leading to new discoveries.
  • Chemistry is essential to meeting our basic needs of food, clothing, shelter, health, energy and clean air, water and soil. Chemical technologies enrich our quality of life in numerous ways by providing new solutions to problems of health, problems in health, materials and energy usage... For better or for worse, everything is chemical.

<h3>Hope it helps!!</h3>

<em>Then</em><em>;</em>

<h3><em>Please</em><em> </em><em>mark me as brainliest</em><em>!</em><em>!</em><em>!</em></h3>

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7 0
3 years ago
A compound ‘X’ is used for drinking, has pH =7.Its acidified solution undergoes decomposition in presence of electricity to prod
umka21 [38]

Answer:

X = Water (H2O) ; Y = Hydrogen ; Z = Oxygen

Explanation:

2(H2O) -------> 2H2 + O2

6 0
3 years ago
Which is easier to remove: a valence electron from, Li or Na? Explain why.
scZoUnD [109]

The atomic number of Li is 3

Electron configuration of Li : 1s² 2s¹

The atomic number of Na is 11

Electron configuration of Na : 1s²2s²2p⁶3s¹

Thus there is one electron in the valence shell of Li (2s¹) and that of Na (3s¹). However, the valence electron in Na is in a shell that is farther away from the nucleus compared to that of Li. As a result, the Na valence electron will be held less tightly by the nucleus i.e. it will experience a reduced nuclear attraction and can be removed easily than the Li 2s electron.

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3 years ago
Help i have the stupid
marin [14]
I think the answer is D in my opinion
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3 years ago
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