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olga nikolaevna [1]
2 years ago
6

URGENT !!!! write a letter to the "city council" PLEASE HELP ILL GIVE THE BRAINIEST AND A BUNCH OF POINT !!What happens to pure

substances and mixtures we create and use in our homes and businesses? As a Material Engineer you have been hired by your city council to investigate how to safely handle waste in your community. For example, household toxic waste (batteries, paint, cleaners), sewage, pesticides. Research household carbon monoxide, lead, bleach, and paint to determine if they are a pure substance or a mixture. Choose 1 pure substance example and 1 mixture example to compare and contrast in a presentation to the City Council along with a plan for how each can be safely disposed of into the environment.
Chemistry
1 answer:
aleksley [76]2 years ago
4 0
Bleach and anytype of cleaner like window cleaner or disinfectant is very dangerous because if you mix those two together it might cause a very deadly fume and can cause lung failure and death within about 5 hours
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After 4 half-lives 10 grams of uranium remains. How much uranium did you start with?
Free_Kalibri [48]

Answer:

i think 40 grams

Explanation:

4 0
3 years ago
An oxygen atom has a mass of 2.66 x 10^-23 g and a glass of water has a mass of 0.050kg. Use this information to answer the ques
fomenos
<h2>ANSWER OF EACH PART ARE GIVEN BELOW</h2>

Explanation:

A)

We know, each mole contains N_A= 6.023 \times 10^{23} atoms.

It is given that mass of one oxygen atom is m= 2.66\times 10^{-23}\ g.

Therefore, mass of one mole of oxygen, M=m\times N_A.

Putting value of n and N_A,

M=2.66\times 10^{-23}\times 6.023\times 10^{23} \ gm\\M=16.0\ gm

B)

Given,

Mass of water in glass=0.050 kg = 50 gm.

From above part mass of one mole of oxygen atoms = 16.0 gm.

Therefore, number of mole of oxygen equivalent to 50 gm oxygen=\dfrac{50}{16}=3.1 \ moles.

LEARN MORE :

Avogadro's number

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3 0
2 years ago
How many of these transition metals have you heard of before?
AleksAgata [21]

Answer:

38 elements or Element 31: Gallium Element 32: Germanium Element 33: Arsenic Element 34: Selenium Element 35: Bromine Element .

Explanation:

How many transition metals are there?

The 38 elements in groups 3 through 12 of the periodic table are called "transition metals". As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat.

6 0
2 years ago
Why do atoms form blonds​
lakkis [162]

Answer:

Atoms form chemical bonds to make their outer electron shells more stable. ... An ionic bond, where one atom essentially donates an electron to another, forms when one atom becomes stable by losing its outer electrons and the other atoms become stable (usually by filling its valence shell) by gaining the electrons.

Explanation:

7 0
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Where can find the neutrons in an atom
il63 [147K]

Answer:

neutrons are found in the nucleus of an atom.

Explanation:

6 0
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