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never [62]
2 years ago
13

How do chemicals hurt our environment

Chemistry
2 answers:
Ilya [14]2 years ago
6 0

Answer:also depending on the chemicals. So basically EXCESSIVE or misuse of chemicals can be harmful by getting into the air , water, animals etc.

Explanation:

goblinko [34]2 years ago
5 0
Chemicals can enter the air, water, and soil when they are produced, used or disposed
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each of the following nuclides is used in nuclear medicine. list them in order of most active to least active
Naddika [18.5K]

Different radioactive nuclides decay into their respective daughter nuclides at distinct rates. Some of the nuclides decay briskly, while others decay gradually. The time it consumes for half of the parent nuclide in a radioactive sample to decay to the daughter nuclides is known as the half-life of the radioactive sample.  

The nuclides, which decay briskly exhibit short half-lives and are very active. The half-life can be utilized to find the rates of radioactive decay. In the given question, the half-lives of various nuclides are given. So, the order to the most active (shortest half-life or largest number of decays per second) to least reactive (largest half-life or the smallest number of decays per second) is:  

Tc-99m > Y-90 > In-111 > I-131


8 0
4 years ago
Does standard atmospheric pressure correspond to the normal air pressure at sea level.
pochemuha

Answer:

Yes

Explanation:

Standard temperature and pressure conditions are defined as 1 atm pressure and 273.15 K. On the other hand, standard ambient temperature and pressure conditions are defined as 1 atm pressure and 298.15 K.

Notice, however, that the only change between them is in temperature.

In any standard conditions, the standard atmospheric pressure is equal to 1 atm.

At sea level, the atmospheric pressure is also equal to 1 atm.

Therefore, we may conclude that the standard atmospheric pressure is equivalent to the normal air pressure at sea level. With an increase in altitude, however, the atmospheric pressure decreases.

7 0
3 years ago
What is the mass of 1.45 moles of silver sulfate?
tatuchka [14]

Answer:

449.5 g

Explanation:

Silver sulfate- Ag2SO4

M(Ag)=107 g/mol => M(Ag2)=214 g/mol

M(S)=32 g/mol

M(O)=16 g/mol => M(O4)=64 g/mol

M(Ag2SO4)=310 g/mol

n=1.45 mol

m(Ag2SO4)=M(Ag2SO4)*n=310 g/mol *1.45 mol= 449.5 g

3 0
3 years ago
Read 2 more answers
Calculate the number of atoms in exactly 3.5 moles of naturally occurring calcium.
trapecia [35]
2.11x10^24 Ca atoms

In order to find the amount of atoms we must use Avogadro’s number, 6.022 x 10^23

Since we have moles, 3.5 the equation would look like this

3.5 moles Ca x 6.022x10^23/1 = 2.1077 x 10^24, which we round to 2.11 x 10^24 atoms of Ca
4 0
2 years ago
Which is an example of ionization?
Reptile [31]
Ionization is a formation of ions from neutral atoms or molecules.

SO₂ + H₂O = HSO₃⁻ + H⁺

Mg(OH)₂ = Mg²⁺ + 2OH⁻
3 0
3 years ago
Read 2 more answers
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