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OlgaM077 [116]
3 years ago
15

Nucleus of an atom is negatively charged why​

Chemistry
2 answers:
podryga [215]3 years ago
8 0
Nucleus of an atom are positively charged because it has neutrons and protons. the shells of an atom are negatively charged because they have electrons.
NeX [460]3 years ago
7 0

Answer:

No <em>the </em><em>nucleus</em><em> of</em><em> </em><em>an</em><em> </em><em>atom</em><em> </em><em>is </em><em>positively</em><em> </em><em>charged</em>

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Does gas have a definite denisty?​
sergeinik [125]

Answer:

<h2><em>no</em></h2>

Explanation:

<h2><u><em>the particles in gas move so freely that it cannot have a definite density</em></u></h2><h2><u><em></em></u></h2><h2><u><em></em></u></h2><h2><u><em></em></u></h2><h2><u><em>moo</em></u></h2>
7 0
3 years ago
What is the molar mass of Ba3(PO4)2?
Yakvenalex [24]

Answer:

<h3>601.93 g/mol</h3>

<h3>explanation:</h3>

Problem: The Ba3(PO4)2 (molar mass = 601.93 g/mol) precipitate that formed from a salt mixture has a mass of 0.667 g.

5 0
2 years ago
Be sure to answer all parts. calculate δg ocell for the reaction between cr(s) and cu2+(aq). e ocell = 1.08 j/c. enter your answ
Mademuasel [1]

Answer:

\boxed{-6.29 \times10^{5}\text{ J}}

Explanation:

Step 1. Determine the cell potential

                                                  <u>    E°/V     </u>

2×[Cr ⟶ Cr³⁺ + 3e⁻]                  0.744  V

<u>3×[Cu²⁺ + 2e⁻ ⟶ Cu]             </u>   <u>0.3419 V </u>

2Cr + 3Cu²⁺ ⟶ 3Cu  + 2Cr³⁺    1.086  V

Step 2. Calculate ΔG°

\Delta G^{\circ} = -nFE_{\text{cell}}^{^{\circ}} = -6 \times 96 485 \times 1.086 = \text{-629 000 J}\\\\= \boxed{-6.29 \times10^{5}\text{ J}}

6 0
3 years ago
What is the capillary rise of ethanol in a glass tube with a 0.1 mm radius if the surface tension of ethanol is 0.032Jm2 and the
sweet [91]

Answer: The capillary rise(h) in the glass tube is = 0.009m

Explanation:

Using the equation

h = 2Tcosθ/rpg

Given

Contact angle, θ = Zero

h = height of the glass tube=?

T = surface tension = 0.032J/m^2

r = radius of the tube = 0.1mm =0.0001m

p= density of ethanol = 0.71g/cm^3

g= 9.8m/s^2

h = (2 * 0.032 * cos 0)/( 710*9.8*0.0001)

h= 0.09m

Therefore the capillary rise in the tube is 0.09m

5 0
3 years ago
Which environmental changes occur Fastest
aleksklad [387]
Assuming you have multiple choices... According to the internet, this question is a multiple choice question.

Here are following answers.

"The environmental change that occurs faster is definitely volcanic eruption. It may happen in an instant and destroy everything in its way, whereas the process of regrowth of forest after volcanic eruption is a slow one."

Oil spills may also have the fastest occurring changes in the environment.

Quoted answers are NOT Mine! All credits reserved to the owners:

@WorldlyGlass49 and @<span>Avery123</span>  


7 0
3 years ago
Read 2 more answers
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