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2 years ago

Two types of liquids, two types of gases, two types of solids.

Chemistry

2 answers:

JulsSmile [24]2 years ago

5 0

Liquid=soda, water
Gases=air, carbon dioxide
Solid=food, ice

snow_tiger [21]2 years ago

3 0

Answer:

liquids: water and soda

gases: oxygen and carbon dioxide

solid: a chair and a notebook

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Schach [20]

Answer: The correct option is option d

Explanation - The mean deal with science is that it allows people to carry on research in an organized manner to find or make new discoveries and inventions.

The basic purpose of science is to try new things or ways to get an outcome by constant perseverance on research and negating the ways that don't work thus giving and improving knowledge of what is correct and what is not to make a new Discovery or invention.

7 0

3 years ago

Read 2 more answers

If the theoretical yield of RX is 56.0 g , what is it’s percent yield ?b

Angelina_Jolie [31]

<span>the theoretical yield which is the expected yield and the actual yield obtained are not always the same. therefore percent yield is calculated which shows how much of the percentage of the theoretical yield is actually obtained.
the theoretical yield = 56.0 g
actual yield = 47.0 g
percent yield = actual yield / theoretical yield x 100 %
percent yield = 47.0 / 56.0 x 100% = 83.9 %
percent yield = 83.9 %</span>

8 0

3 years ago

Read 2 more answers

2Pb(s) + O2(aq) + 4H+(aq) → 2H2O(l) + 2Pb2+(aq)

defon

Answer:

The answer to your question is 0.269 g of Pb

Explanation:

Data

Lead solution = 0.000013 M

Volume = 100 L

mass = 0.269 g

atomic mass Pb = 207.2 g

Chemical reaction

2Pb(s) + O₂(aq) + 4H⁺(aq) → 2H₂O(l) + 2Pb₂⁺(aq)

Process

1.- Calculate the mass of Pb in solution

Formula

Molarity = $\frac{number of moles}{volume}$

Solve for number of moles

Number of moles = Volume x Molarity

Substitution

Number of moles = 100 x 0.000013

Number of moles = 0.0013

2.- Calculate the mass of Pb formed.

207.2 g of Pb ----------------- 1 mol

x g ----------------- 0.0013 moles

x = (0.0013 x 207.2) / 1

x = 0.269 g of Pb

8 0

3 years ago

Read 2 more answers

The specific heat for liquid ethanol is 2.46 J/(g•°C). When 210 g of ethanol is cooled from

avanturin [10]

Answer:

a) heat it from 23.0 to 78.3

q = (50.0 g) (55.3 °C) (2.46 J/g·°C) =

b) boil it at 78.3

(39.3 kJ/mol) (50.0 g / 46.0684 g/mol) =

c) sum up the answers from the two calculations above. Be sure to change the J from the first calc into kJ

Explanation:

3 0

3 years ago

The complete orbital notation diagram of an atom is shown.

Yuki888 [10]

Answer:

Explanation:

From the description provided by the statement of the problem, we can easily solve for the values of the angular momentum quantum number.

Let us represent the atom as J:

In atom J, we have five sub-orbitals in which there 9 electrons. From the designation used to represent sublevels, we can write the notation as below:

J = 10 electrons = 1s² 2s² 2p⁵

The s-sublevel can only contain 2 electrons

p-sublevel can contain 6 electrons but we have just 5 electrons in there.

Now, to find the angular momentum quantum number, we need to understand what this quantum number denotes.

This quantum number is also known as azimuthal or secondary quantum number. It gives the shape of the orbitals in subshells accomodating electrons. This quantum number is designated by (l).

l (n-1) name of orbital shape of orbital

0 s spherical

1 p dumb-bell

2 d double dumb-bell

3 f complex

J = 1s² 2s² 2p⁵

where 1 and 2 coefficients are the principal quantum numbers(n).

s and p are the shape of the orbitals

For 1s², the l vaue is 0 because the electron is in the s orbital

2s² the l value is 0, 1 and the electron can be in the s or p orbitals

2p⁵ the l value is 0, 1 and the electrons can be in the s or p orbitals

The quantum number gives the shape of the orbital.

8 0

3 years ago