How to determine the charge of a polyatomic ion?

Answers

Answer 1

Answer: There are rules that needs to be followed.

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Can someone help plsCalculate the mass in grams of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

Answers

18.22 g of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

What is STP and how the amount of HCL came out to be 18.22 grams after the reaction?

STP is standard temperature and pressure which is taken into account in the question to compare the value to standardized values.
Here is given 5.6 L of hydrogen measured at STP reacting with an excess of chlorine gas.
According to STP, T = 273 K , P= 1 atm , R = 0.0821L atm/K mol. The equation would be like: H2 + Cl2 = 2HCl .
Now using ideal gas law , PV =nRT , n =PV/RT = 1 x 5.6L/0.0821Latm/K mol x 273 = 0.2498 mol.
Now molar mass of HCl = 0.4996 x 36.485 = 18.22 g . Hence the amount of HCl produced would be 18.22 grams.

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Pure,24k gold is very malleable.by mixing gold with other metals it becomes less malleable.in what situations would you want to use gold that is not as malleable?

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You could use the less malleable mixture of minerals. Say you have a gold earring this is bad because overtime it goes through lots of wear and tear, the shape of the earring will change. If it was less malleable it will withstand more wear and tear.

According to one acid-base theory, a water molecule acts as a base when it accepts(1) an H+ ion (3) a neutron
(2) an OH- ion (4) an electron

Answers

Answer : The correct option is, (1) an $H^+$ ion

Explanation :

According to the Bronsted-Lowry or acid-base concept, a substance is called as an acid if it can donate a proton and a substance is called as a base if it can accept a proton. And the substance may be a molecule or an ion.

When a water molecule acts as an acid then it can donate a proton or $H^+$ ion.

When a water molecule acts as a base then it can accepts a proton or $H^+$ ion.

Hence, the correct option is, (1) an $H^+$ ion

Final answer:

In accordance to the Brønsted-Lowry theory, a water molecule acts as a base when it accepts an H+ ion during the ionization of water. This capability for water to function both as an acid when donating an H+ ion, and a base when accepting an H+ ion makes it amphoteric.

Explanation:

According to the Brønsted-Lowry theory of acids and bases in Chemistry, a water molecule acts as a base when it accepts an H+ ion. This occurs during the ionization of water, a chemical reaction that takes place when water auto-ionizes into a hydronium ion (H3O+) and a hydroxide ion (OH-). Therefore, the correct choice from your options is (1) an H+ ion.

Water acts as an acid when it donates an H+ ion and as a base when it accepts an H+ ion, transforming it into a hydronium ion. This capacity for water to act as both an acid and a base makes it amphoteric.

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Similarities and differences between the male and female reproductive systems

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Another significant difference is that the female reproductive system produces only one egg per month during a woman's reproducive years. This translates to only several hundred eggs produced during her lifetime. The male reproductive has literally millions of sperm cells available daily, as opposed to a single egg per month.

Final answer:

The male and female reproductive systems have similarities and differences. Both systems have specialized organs involved in reproduction, but they produce different gametes and have different external genitalia. The female system can support the development of a fertilized egg.

Explanation:

SIMILARITIES

The male and female reproductive systems have a common goal of producing offspring. Both systems include specialized organs and structures involved in the process. For example, both have gonads (testes in males and ovaries in females) that produce gametes (sperm in males and eggs in females).

DIFFERENCES

One major difference is the production of different gametes: sperm in males and eggs in females. Another difference is the presence of different external genitalia: male genitalia and scrotum in males and vulva in females. The female reproductive system also has the ability to support the development of a fertilized egg, while the male system does not have this capability.

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Which two gases make up most of the atmosphere?

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nitrogen wich comprises 78% of the atmosphere and oxygen wich accounts for 21%

Dinitrogen trisulfide symbol

Answers

Dinitrogen trisulfide symbol:N2S3

Final answer:

The symbol for the compound dinitrogen trisulfide is N2S3. It is derived from the number of nitrogen and sulfur atoms present in the compound.

Explanation:

The chemical compound dinitrogen trisulfide is composed of two elements: nitrogen (N) and sulfur (S). When we name the compound according to IUPAC nomenclature rules, we consider the number of each type of atom present. Dinitrogen means there are two nitrogen atoms, represented by the subscript 2, and trisulfide implies that there are three sulfur atoms, signified by the subscript 3. Hence, the symbol or chemical formula for dinitrogen trisulfide is N2S3.

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In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 140 g of chlorine gas. Express the quantity in moles to three significant figures.