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3 years ago

Can somebody plz help answer both these 2 questions ONLY 1-2 sentences if good! thanks :]

Chemistry

2 answers:

Gekata [30.6K]3 years ago

6 0

I already answered number one, so I'll do number two. A turbine is a machine that spins in order to create energy or electricity, in some cases. The turbine collects the wind and it flows throughout the body of the turbine, where the machine then forms it into electricity.

Brrunno [24]3 years ago

4 0

Answer: 1. Generating energy is the meaning of process, which generates the electric power coming from sources of foremost energy. 2. A turbine is a machine that is for producing constant power, which works by a wheel or rotor, consisting of vanes, made to spin by speedy movement of steam, gas, air, water, etc. Due to this process, it allows for energy to be produced.

Explanation:

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Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Zn2+, Ni4+, F-

hram777 [196]

Ionic compounds are formed between oppositely charged ions.

A binary ionic compound is composed of ions of two different elements - one of which is a positive ion(metal), and the other is negative ion (nonmetal).

To write the empirical formula of binary ionic compound we must remember that one ion should be positive and other ion should be negative, then only the correct formula should be written. To write the empirical formula the charges of opposite ions should be criss-crossed.

First empirical formula of binary ionic compound is written between $Zn^{2+} (Positive ion)and F^{-} (Negative ion)$

First Formula would be $ZnF_{2}$

Second empirical formula is between $Zn^{2+}(Positive ion) and O^{2-}(Negative ion)$

Second Formula would be $Zn_{2}O_{2}$

Note : When the subscript are same they get cancel out, so $Zn_{2}O_{2}$ would be written as $ZnO$

Third empirical formula is between $Ni^{4+}(Positive ion) and F^{-}(Negative ion)$

Third Formula would be : $NiF_{4}$

Forth empirical formula is between $Ni^{4+}(Positive ion)and O^{2-}(negative ion)$

Forth Formula would be : $Ni_{2}O_{4}$ or $NiO_{2}$

Note- The subscript will be simplified and the formula will be written as $NiO_{2}$ .

The empirical formula of four binary ionic compounds are : $ZnF_{2}, ZnO, NiF_{4},NiO_{2}$

8 0

3 years ago

Read 2 more answers

Stained glass is homogeneous heterogeneous.

Serjik [45]

Answer:

It is heterogeneous as it is made up of visibly different substances or phases.

6 0

3 years ago

Three isotopes of silicon have mass numbers of 28,29, and 30 with an average atomic mass of 28.086 what does this say about the

Sedbober [7]

Answer is: silicon isotope with mass number 28 has highest relative abundance, this isotope is the most common of these three isotopes.

Ar₁(Si) = 28; the average atomic mass of isotope ²⁸Si.

Ar₂(Si) =29; the average atomic mass of isotope ²⁹Si.

Ar₃(Si) =30; the average atomic mass of isotope ³⁰Si.

Silicon (Si) is composed of three stable isotopes, ₂₈Si (92.23%), ₂₉Si (4.67%) and ₃₀Si (3.10%).

ω₁(Si) = 92.23%; mass percentage of isotope ²⁸Si.

ω₂(Si) = 4.67%; mass percentage of isotope ²⁹Si.

ω₃(Si) = 3.10%; mass percentage of isotope ³⁰Si.

Ar(Si) = 28.086 amu; average atomic mass of silicon.

Ar(Si) = Ar₁(Si) · ω₁(B) + Ar₂(Si) · ω₂(Si) + Ar₃(Si) · ω₃(Si).

28,086 = 28 · 0.9223 + 29 · 0.0467 + 30 · 0.031.

8 0

3 years ago

Use the picture to answer the question.

natima [27]

Answer:

3 holes

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Explanation:

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3 years ago

The table below gives the numbers of protons, electrons, and neutrons in four atoms.

PolarNik [594]

Answer:

Atom 3

Explanation:

Protons have a +1 charge, electrons have a -1 charge, and neutrons have no charge and are therefore neutral. The charges will cancel each other when equal. To determine which atom has the a -1 charge, find the atom that has one more electron than it has protons.

4 0

3 years ago

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