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kipiarov [429]
3 years ago
6

Ernest Rutherford discovered that atoms were mostly:

Chemistry
2 answers:
Bezzdna [24]3 years ago
7 0
The answer is empty space!!
Elden [556K]3 years ago
5 0

Answer:

The answer is positively charged.

Explanation:

The Rutherford model supplanted the atomic model of English physicist Sir J.J. Thomson, in where the electrons were set in a positively charged atom.

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2
nignag [31]

Answer:

D

Explanation:

I think it is D. Think about it- if a human jumps, they are less than the gravitational force. But, if you are greater than the gravitational force, I think you will go into space.

4 0
3 years ago
9.
Wewaii [24]
Answer: A) Water Explanation: Water molecules are polar molecules
6 0
3 years ago
Read 2 more answers
The 54.9-g sample of the compound X2O7 contains 33.6 g of oxygen atoms. What is the molar mass of element X?
vazorg [7]
Mass of X₂O₇ = 54,9g

2x + 33,6g = 54,9g
2x = 54,9g - 33,6g
2x = 21,3g  | :2
x = 10,65g/mol
7 0
3 years ago
Read 2 more answers
The molar mass of copper is 63.55 g/mol. How many moles of copper were reacted?
Oksana_A [137]
The moles of any substance are equal to the substance's mass divided by its molar mass. Therefore, in order to calculate the moles of copper, you would divide the reacted mass by 63.55
8 0
3 years ago
Read 2 more answers
Which is least likely to be reduced? <br> A. Zn^2+ <br> B. Fe^3+ <br> C. Cu^2+ <br> D. Fe^2+
alekssr [168]

A. Zn²⁺

<h3>Further explanation</h3>

Given

Cations of several elements

Required

The least to be reduced

Solution

If we look at the voltaic series:

<em>Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe²⁺-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Fe³⁺-Ag-Pt-Au </em>

The electrode which is easier to reduce than the hydrogen (H2) electrode has a positive sign (E red= +) and is located to the right of the voltaic series (right of H)

The electrode which is easier to oxidize than the hydrogen (H2) electrode and is difficult to experience reduction has a negative sign (E red= -) and is located to the left of the voltaic series (left of H)

Or you can look at the standard reduction potential value of the metals in the answer options, and the most negative reduction E° value which will be difficult to reduce.

The Zn metal is located far left of the other metals in the answer choices, so it is the most difficult to reduce

6 0
3 years ago
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