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Inessa05 [86]
4 years ago
6

What was Thompson’s model of the atom called

Chemistry
2 answers:
shtirl [24]4 years ago
4 0

J. J. Thomson, who discovered the electron in 1897, proposed the plum pudding model of the atom in 1904 before the discovery of the atomic nucleus in order to include the electron in the atomic model. In Thomson's model, the atom is composed of electrons (which Thomson still called “corpuscles,” though G. J.

Eddi Din [679]4 years ago
4 0

Answer:

plum pudding -APEX-

Explanation:

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butalik [34]
That looks like cells of a multicellular organism, so B.
8 0
3 years ago
Read 2 more answers
A compound contains 36.48% Na, 25.41% S, and 38.11% O. Find it’s empirical formula
MAXImum [283]

Answer:

we can use 100g of compounds as the basis.

Explanation:

3 0
2 years ago
A 260.0 −mL buffer solution initially contains 2.5×10−2 M of HCHO2 and 2.5×10−2 M of NaCHO2
FinnZ [79.3K]

The mass of HCHO2 and NaCHO2 to be added to the buffer solution are 0.23g and 0.44g respectively

Data;

  • Volume of solution = 260mL
  • conc. of HCHO2 = 2.5*10^-2M
  • conc. of NaCHO2 = 2.5*10^-2M

<h3>Mass of Reagent Added</h3>

To calculate the mass of reagent added,  let's start with HCHO2

The mass of HCHO2 to be added is the number of moles of HCHO2 multiplied by it's molar mass.

260*10^-^3 * 2.5*10^-^2 * 46 = 0.229 = 0.23g

The mass of NaCHO2 to be added in the buffer solution is

260*10^-^3*2.5*10^-^2*68 = 0.442 = 0.44g

The mass of HCHO2 and NaCHO2 to be added to the buffer solution are 0.23g and 0.44g respectively

Learn more about buffer solution here;

brainly.com/question/22390063

3 0
2 years ago
Reaction btwn zinc and hydrochloric acid<br>​
KIM [24]

Answer:

Zn + 2HCl = ZnCl2 + H2

Explanation:

as Zinc is more active than Hydrogen

as it lies before it in chemical activity series

so zinc can replace hydrogen ions found at acidic solutions

in simple substitution reaction

8 0
3 years ago
The atom in a sample of an element must contain nuclei with the same number of?
slava [35]
Hey there! 

Answer: Protons 

The atom in a sample of an element must contain nuclei with the same number of protons. If the protons change in number, then the element will modify as well. 

Thank you!
7 0
3 years ago
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