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2 years ago

Zirconium has an atomic number of 40, And an atomic mass of 91. How many electrons does zirconium have?

Chemistry

2 answers:

Musya8 [376]2 years ago

5 0

Answer:

Explanation:

because the atomic number is how many electrons

Vedmedyk [2.9K]2 years ago

3 0

Answer: 40

Explanation: Whatever the atomic number is, that’s also the number of electrons and protons.

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When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write balanced molec

Aleks04 [339]

Yes, a precipitation process does take place here. BaCO₃ and KOH are the byproducts of this double displacement reaction, and since BaCO₃ is soluble in solution, it precipitates as a solid.

Molecular: Ba(NO₃)₂(aq) + K₂CO₃(aq) → 2K⁺(aq) + 2NO₃¯(aq) + BaCO₃(s) ⬇︎

The complete ionic reaction can be written as follows:

Ba²⁺(aq) + 2NO₃¯(aq) + 2K⁺(aq) + CO₃²¯(aq) → 2K⁺(aq) + 2NO₃¯(aq) + BaCO₃(s) ⬇︎

All the ions in solution have been written out. Now, on to the net ionic equation:

Ba²⁺(aq) + CO₃²¯(aq) → BaCO₃(s) ⬇︎

<h3>what is precipitation?</h3>

Any liquid or frozen water that condenses in the atmosphere and falls to the ground is known as precipitation. Snow, sleet, and rain are just a few of the variations. One of the three main processes that make up the global water cycle is precipitation, along with evaporation and condensation.

Water vapor in the clouds condenses into increasing-sized droplets of water, forming precipitation. Droplets fall to the Earth when they are sufficiently heavy. The water droplets may freeze to produce ice if a cloud is colder, as it would be at higher elevations. Depending on the temperature within the cloud and at the Earth's surface, these ice crystals eventually discharge to the Earth as snow, hail, or rain.

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1 year ago

Hi I like a guy (He knows I like him too cause my friend told him) but me and this guy are really good friends how do I deal wit

kirza4 [7]

Answer:

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When you start to feel you are desiring more than just a casual friendship with your best friend and you’re not sure what to do next, let me offer you some advice that could strengthen both your relationship and your love for each other.

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2 years ago

Can u helmp me, i can give u a 25 points

tester [92]

They’re less reactive, they don’t react quickly with water or oxygen which they resist corrosion.

Answer : true

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3 years ago

How is synthesis and decomposition reaction related to each other???

Anit [1.1K]

They are kind of opposite processes. Chemical synthesis is execution of chemical reactions to make products. Like you take two substances, you put them together, they react and you have new a substance. For example. $2Na+{ Cl }_{ 2 }\rightarrow 2NaCl$ here Sodium and Chlorine react to make a new substance which is Sodium Chloride.

Chemical decomposition is process of seperating a substance to different substances. There is a substance by a reaction this substance becomes two substances, Like : XY -> X+Y For example : $2{ H }_{ 2 }O(l)\quad \rightarrow 2{ H }_{ 2 }+{ O }_{ 2 }$

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3 years ago

Read 2 more answers

Plz answer this i will mark brainly like and ratr

matrenka [14]

Answer:

answer what ?

Explanation:

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2 years ago

Zirconium has an atomic number of 40, And an atomic mass of 91. How many electrons does zirconium have?￼￼

Zirconium has an atomic number of 40, And an atomic mass of 91. How many electrons does zirconium have?