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4 years ago

An atom has atomic number 11 and mass number 23. How many electrons does the atom have?

Chemistry

1 answer:

Deffense [45]4 years ago

3 0

Answer:

Explanation:

The number of electrons is the same as the number of protons. Protons are the atomic number.

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How is the stability of a nucleus affected by changing the number of nuclear particles?

Svet_ta [14]

Answer:

Greatly affected.

Explanation:

The stability of a nucleus is greatly affected by changing the number of nuclear particles because changing the number of nuclear particles i.e. neutron or proton will leads to change the element. When we change the number of protons in an atom, we will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive in nature so we can conclude that changing number of nuclear particles impact the stability of nucleus of an atom.

5 0

3 years ago

The temperature of a sample of gas in a steel

Snezhnost [94]

Answer:

$P_2=51.7kPa$

Explanation:

Hello,

In this case, we apply the Gay-Lussac's law which allows us to understand the pressure-temperature behavior via a directly proportional relationship:

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$

Thus, since we are asked to compute the final pressure we solve for it in the previous formula, considering the temperature in absolute Kelvin units:

$P_2=\frac{P_1T_2}{T_1}=\frac{30.0kPa*(25.0+273)K}{(-100.0+273)K} \\\\P_2=51.7kPa$

Best regards.

3 0

3 years ago

Read 2 more answers

What Happens During Fermentation?

Stella [2.4K]

Answer:

Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol.

Sometimes bacteria perform fermentation, converting carbohydrates into lactic acid...

You can look up videos of yeast fermentation in apple juice.

5 0

3 years ago

Hi how has your day been

Lady bird [3.3K]

Answer:

good man thanks

Explanation:

8 0

3 years ago

Read 2 more answers

Name 2 physical properties that would allow differentiation between copper, lead and iron shot.

Olegator [25]

Answer:

Two physical properties that would allow differentiation between copper, lead and iron shot are - Color and Density

COPPER - Color - Copper has a reddish brown color .

 Density - Density of copper is 8.96 $g/cm^{3}$

LEAD - Color - Lead is grey in color.

Density - Density of Lead is 11.34 $g/cm^{3}$ 

IRON SHOT - Color- Iron shot is in grey color with extra shine .

 Density - Density of iron shot is 10.49 $g/cm^{3}$

Explanation:

COPPER- Copper (Cu) is a reddish, highly ductile metal that belongs to Group 11 (Ib) of the periodic table and is a particularly excellent conductor of electricity and heat. Copper is found in nature in its free metallic state.

LEAD- Lead (Pb) is a soft, silvery white or grayish metal in Periodic Group 14 (IVa). Lead is a weak conductor of electricity and is very malleable, ductile, and thick. Lead, which has been known since antiquity and is considered the oldest of metals by alchemists, is extremely durable and corrosion-resistant, as evidenced by the continued use of lead water pipes constructed by the ancient Romans.

IRON SHOT - Small round iron balls used as projectiles are known as iron shot. Balance scales are used with simple weights. Iron balls are used in the shot put competition.

Hence , the differentiation is mentioned in the above answer.

4 0

3 years ago