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Evgesh-ka [11]
2 years ago
15

Pls help nowwJust want to see who's the smartest herepromise to tag u as brainliest​

Chemistry
1 answer:
sveta [45]2 years ago
4 0

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

1. The equation representing the equation is ~

\mathrm{Na + Cl\rightarrow NaCl}

The given reaction is a <u>redox reaction</u> because there's a <u>transfer of electron</u> from <u>Sodium</u> (Na) to <u>chlorine</u> (Cl)

where sodium is <u>oxidized</u> (due to loss of electron) and chlorine get <u>reduced</u> (due to gain of electron).

2. <u>Sodium</u> is a <u>highly reactive</u> element which belongs to the 1st group of periodic table, hence it can catch fire if it is kept free in atmosphere. so in order to prevent that it is stored in <u>kerosene</u> oil, which doesn't let Sodium come in contact with air .

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Which important change in electronic devices, such as televisions and computers, is a result of the use of metalloids as semicon
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electronic devices now use more energy

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3 years ago
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On a mission to a newly discovered planet, an astronaut finds chlorine abundances of 13.85 % for 35cl and 86.15 % for 37cl. What
Evgen [1.6K]
<h3>Answer:</h3>

              36.70 amu

<h3>Solution:</h3>

Data Given:

                       Atomic Mass of ³⁵Cl  =  34.9700 amu

                       Natural Abundance of ³⁵Cl  =  13.85 %

                       Atomic Mass of ³⁷Cl  =  36.9700 amu

                       Natural Abundance of ³⁷Cl  =  86.15 %

Formula Used:

Average Atomic Mass  =  [(Atomic Mass of ³⁵Cl × Natural Abundance of ³⁵Cl) + (Atomic Mass of ³⁷Cl × Natural Abundance of ³⁷Cl)] ÷ 100

Putting values,

Average Atomic Mass  =  [(34.9700 × 13.85) + (36.9700 × 86.15)] ÷ 100

Average Atomic Mass  =  [(484.3345) + (3184.9655)] ÷ 100

Average Atomic Mass  =  3669.3 ÷ 100

Average Atomic Mass  =  36.70 amu

8 0
3 years ago
How many grams of Fe2O3 will be produced from 10.0 g of Fe and 7.00 g of O2?
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Answer:

0.01790670606142 we assume you converting between moles fe and gram. you can reveiw more details on each measurement unit: molecular weight of fe or grams the sI base unit for amount of substance is the mole.1 mole is equal to 1 moles fe,or 55.845 grams

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Which statement is always true about conversation of matter?
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The mass of a system does not change during a chemical reaction

Explanation:

Correct Answers

8 0
2 years ago
write the equilibrium expression for the base ionization of the weak base of methylamine, ch3 nh2 . hint: first write the balanc
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CH3NH2 + HOH ==> CH3NH3^+ + OH^-Which molecule/ion accepts a proton. That is the base. Which molecule/ion donates a proton. That is the acid.

A stable subatomic particle known by the symbol for "proton"

e elementary charge, p, H+, or 1H+ having a positive electric charge. Its mass is 1,836 times greater than an electron's mass and just a little bit less than that of a neutron (the proton–electron mass ratio). "Nucleons" refers to protons and neutrons together, each of which has a mass of roughly one atomic mass unit (particles present in atomic nuclei).

Each atom. has a nucleus. that contains one or more protons. In order to keep the atomic electrons bound, they offer the central attractive electrostatic force. An element's defining characteristic, known as the atomic number, is the number of protons in the nucleus (represented by the symbol Z)

Learn more about proton here:

brainly.com/question/1252435

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