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Helen [10]
2 years ago
6

What is atom?????????????

Chemistry
2 answers:
kiruha [24]2 years ago
6 0

Answer:

An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. ... The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons. A proton is positively charged.

Katena32 [7]2 years ago
4 0

Answer:

An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. ... The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons. A proton is positively charged.

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PLEASEEE HELPPP I SUCK AT CHEM :(
Luda [366]

Answer:

a) H2SO4 + 2KOH -> 2H2O + K2SO4

b) 9.809 ml

Explanation:

Number of Moles = Mass/ Molar Mass

Therefore: Mass = Number of moles * Molar Mass

--------------------------------------------

Molar mass of H2SO4:

H2= 2.02

S= 32.07

O4= 64

--------------------------------------------

H2SO4 has the molar mass of 98.09

--------------------------------------------

the Moles of H2SO4 is given to be 0.100M

Therefore:

Mass= 98.09*0.1

          = 9.809g

---------------------------------------------------

Assuming that 1 g= 1 ml, the volume of sulfuric acid is 9.809 ml.

7 0
3 years ago
Which of the following are likely to form a covalent bond?
Marat540 [252]

hydrogen and oxygen atoms

Explanation:

this is because they are non metals and there will be sharing of electrons between the two atoms forming the bond

4 0
3 years ago
5.2 X 1026 molecules of CH4
olya-2409 [2.1K]

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8 0
3 years ago
How do disease causing organism reach from one organism to other​
Anon25 [30]

Answer:

Infectious diseases are commonly transmitted through direct person-to-person contact.

The main four pathogens are virus, bacteria, protists and fungi.

Bacteria, fungi and protists can reproduce wherever the conditions are warm, with plenty of moisture, nutrients, and space. Viruses can only reproduce by invading living cells.

4 0
3 years ago
__Pb(NO3)2 + __NaCI = __NaNO3 + __PbCI2
Elena L [17]

Answer:

Pb(NO3)2 + 2NaCl = 2NaNO3 + PbCl2

6 0
1 year ago
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