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balu736 [363]
3 years ago
9

Please answer these questions

Chemistry
2 answers:
lions [1.4K]3 years ago
7 0
I found number one
Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom. Methane (CH4), a common greenhouse gas, has five atoms, one of carbon (C) and four of hydrogen (H, see Fig.
VMariaS [17]3 years ago
3 0

Explanation:

1) Is imposible to determine an element from a simple drawing, more information is need or a higher level of details. Also, a "red blob of atoms" sounds like the  description of a molecule (a union of two or more atoms) that may or may not be formed by only one element.

2) There are 92 natural elements, the other ones are synthetic and/or radioactive. You can identify them in the periodic table because their molecular weights are between ( ).

3) False, a molecule is a particular arrangement of atoms that can be from one or more elements. An element is a particular arrangement of atomic particles (neutrons, protons and electrons.)

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Does a bottle of acetic acid contain a solid or a liquid on a chilly morning with the window open and the laboratory at 10 ∘ C ?
Fofino [41]

Answer is:  a bottle of acetic acid contains a solid.

Acetic or ethanoic acid (CH₃COOH) when undiluted is called glacial acetic acid.

Glacial acetic acid has freezing point (melting point) around 16.6°C, so it will be at solit state.

Vinegar is mixture of acetic acid (CH₃COOH) and water (H₂O). Vinegar  is colourless liquid with sour taste and pungent smell, freezing point of the vinegar is lower than glacial acetic acid.

Acetic acid dissociate in aqueous solution to form hydrogen ions (H⁺) and acetic anion (CH₃COO⁻).

Balanced chemical reaction (dissociation):  

CH₃COOH(aq) ⇄ CH₃COO⁻(aq) + H⁺(aq).


7 0
3 years ago
According to the kinetic-molecular theory, the collision between two ideal gas particles is a result of
lakkis [162]

Answer:

neither attraction nor repulsion.

Explanation: bec they are 2 identical gasess

7 0
3 years ago
Read 2 more answers
Which is the correct set of products for the acid-base neutralization reaction between hydrochloric acid and sodium hydroxide?
nydimaria [60]

Answer: I think the answer is C. NaCl and H2O

Explanation: I’m not sure tho

3 0
2 years ago
How many liters are equivalent to 43 milliliters?
marysya [2.9K]

Answer:

The answer is B) 0.043 L

Explanation:

Hope this helps :))

8 0
3 years ago
Read 2 more answers
How many per tickets are in one mole?
Alexeev081 [22]

Answer:

Avogadro's number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro's number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.

Explanation:

7 0
3 years ago
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