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3 years ago

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the atomic mass of the atom?

Chemistry

1 answer:

Vedmedyk [2.9K]3 years ago

5 0

Answer:

20.179

Explanation:

The answer is 20.179 because the element you are talking about is the element Neon, which has the atomic mass of 20.179.

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Write a balanced overall reaction from these unbalanced half-reactions.

ANTONII [103]

The first half reaction is:
Sn+ -> Sn2+

You add 1 electron on the right side:
Sn+ -> Sn2+ + 1e-

The second half reacation is:
Ag+ -> Ag

You add 1 electron to the left side:
Ag+ + 1e- -> Ag

Then, you combine both reactions to get the balanced overall reaction since both half reactions have 1 electrons on the right and left side, respectively. You get:
Sn+ + Ag+ -> Sn2+ + Ag

7 0

3 years ago

Read 2 more answers

Which of these substances i) jello ii) the liquid called tea iii) distilled water is a mixture?

11111nata11111 [884]

The answer is ii) the liquid called tea.

That is ii) the liquid called tea is a mixture.

the liquid called tea is a homogeneous mixture that contains organic and inorganic compounds, sugar(organic carbohydrate),tea leaf extract(organic), water(inorganic).

Whereas (iii) distilled water, is a pure substance while (I) gello is a colloid.

7 0

3 years ago

Wine goes bad soon after opening because the ethanol (CH3CH2OH) dissolved in it reacts with oxygen (O2) gas to form water and aq

andrezito [222]

The number of mole of oxygen needed is of 0.080 mole.

To solve this question, we'll begin by writing the balanced equation for the reaction. This is illustrated below:

From the balanced equation above,

2 moles of O₂ reacted to produce 2 moles of H₂O.

Finally, we shall determine the number of mole of O₂ needed to produce 0.080 mole of H₂O. This can be obtained as follow:

From the balanced equation above,

2 moles of O₂ reacted to produce 2 moles of H₂O.

Therefore,

0.080 mole of O₂ will also react to produce 0.080 mole of H₂O.

Thus, 0.080 mole of oxygen, O₂, is needed for the reaction.

Learn more: brainly.com/question/1563415

7 0

3 years ago

A 27.5g piece of aluminum sits in a room and cools. It loses 6120.0 J of heat. If the initial

madreJ [45]

Answer:

$T_2= -90.0°C$

Explanation:

Hello!

In this case, according to the given description of how the temperature changes for aluminum in agreement to the loss of heat of 6120.0 J, we can use the following equation:

$Q=mC\Delta T=mC(T_2-T_1)\\\\$

Thus, by knowing Q, m, C and the initial temperature, we are able to obtain:

$T_2=T_1+\frac{Q}{mC}\\\\T_2=157.3\°C+\frac{-6120.0J}{27.5g*0.900 J/g\ºC}\\\\T_2= -90.0°C$

Regards!

5 0

3 years ago

Write the balanced COMPLETE ionic equation for the reaction when Cs3PO, and AgNO3 are mixed in aqueous solution. If no reaction

OLEGan [10]

Answer:help

Explanation:

3 0

3 years ago