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Akimi4 [234]
4 years ago
10

If this cup of iced tea sits for a while on your kitchen table what will happen to its thermal energy

Chemistry
1 answer:
Alexus [3.1K]4 years ago
5 0
Because the tea is iced, it would be lower than room temp, meaning it would absorb thermal energy until it was the same temp as room temp, because thermal energy always goes where it is less concentrated until equilibrium has been reached.
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A) find out from the electron configurations in the picture what element preferably makes a compound with Na.
irakobra [83]
A) Picture D

B) Chlorine

C) Natrium chloride (NaCl) / salt
5 0
3 years ago
How to do limiting reagents for chemistry?
gavmur [86]
Balance the chemical equation for the chemical reaction.
Convert the given information into moles.
Use stoichiometry for each individual reactant to find the mass of product produced.
The reactant that produces a lesser amount of product is the limiting reagent.
The reactant that produces a larger amount of product is the excess reagent.
To find the amount of remaining excess reactant, subtract the mass of excess reagent consumed from the total mass of excess reagent given.
4 0
3 years ago
Determine the number of atoms in a 48.3-g sample of zinc. express your answer in zinc atoms using scientific notation.
Paladinen [302]
To answer this question, you need to know the molecular weight of zinc so you can determine how many mol zinc you have. Zinc molecular weight is 65.38gram/mol. Then the calculation would be: 48.3gram/(<span>65.38gram/mol)= 0.74 mol

Since you are asked the amount of atom, you need to multiply the unit in mole with Avogadro number. The calculation should be: 0.74 * 6.02 * 10^23= 4.45* 10^23 molecules</span>
8 0
3 years ago
Identify which compound is an alkane: ch2o, c6h14, or c3h4. Explain your reasoning.
andrey2020 [161]
<h3>Answer:</h3>

               C₆H₁₄ is the only Alkane in given compounds.

<h3>Explanation:</h3>

The General Formula for Alkanes is as follow;

                                                    Cₓ H₂ₓ ₊ ₂

where;

           x  =  whole number

It means in alkanes for every x number of carbon atoms we have 2x + 2 number of hydrogen atoms. Let's apply this formula on given compounds.

CH₂O:

          As there is one carbon atom in this compound hence, the number of hydrogen atoms  present for one carbon atom in alkane must be equal to,

                                                    H₂₍₁₎ ₊ ₂

                                                    H₂ ₊ ₂

                                                    H₄

Hence, this compound is not alkane because it contains only two hydrogen atoms.

C₆H₁₄:

          As there are six carbon atoms in this compound hence, the number of hydrogen atoms present for six carbon atoms in alkane must be equal to,

                                                    H₂₍₆₎ ₊ ₂

                                                    H₁₂ ₊ ₂

                                                    H₁₄

Hence, this compound is alkane because it contains fourteen hydrogen atoms.

C₃H₄:

          As there are three carbon atoms in this compound hence, the number of hydrogen atoms present for three carbon atoms in alkane must be equal to,

                                                    H₂₍₃₎ ₊ ₂

                                                    H₆ ₊ ₂

                                                    H₈

Hence, this compound is not alkane because it contains only four hydrogen atoms.

8 0
3 years ago
22. Which statement best describes the use of catalytic converters in automobiles?
AysviL [449]

Answer:

B. They oxidize hydrocarbons to form less toxic gases.

Explanation:

A catalytic converter can be defined as an anti-pollution device containing a catalyst like platinum-iridium, installed in the exhaust chamber of an automobile so as to chemically convert harmful (poisonous) pollutants such as unburned hydrocarbons and carbon monoxide (CO), sulfur dioxide (S02), nitrogen oxide (NO) etc., into less harmful, poisonous or toxic chemical compounds.

This ultimately implies that, catalytic converters are typically used for converting harmful gases into less harmful, poisonous or toxic gases and molecules e.g carbon dioxide (C02) and water (H2O). This helps to prevent global warming, enhance the conservation of natural resources, as well as preserve the lives of living organisms and their natural habitat.

<em>Hence, the statement which best describes the use of catalytic converters in automobiles is that they oxidize hydrocarbons to form less toxic gases.</em>

3 0
3 years ago
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