Which of the following is NOT a true statement about liquids?1. Liquids have no definite shape.
2. The boiling point of a liquid will increase with increasing atmospheric pressure.
3. The boiling point of a liquid will decrease with decreasing atmospheric pressure.
4. Liquids have no definite volume.
Answers
Answer:
4
Explanation:
1 is correct
Liquids have no definite shape as they take up the shape of the container. Thus, we can say a liquid has no shape of its own but rather has the shape of the container in which it is filled.
2 is correct
When the atmospheric temperature is increased, it also will increase the boiling point of the liquid
3 is correct
This is an extension of the statement 2. While we decrease the atmospheric pressure, we are also decreasing the boiling point
4 is incorrect
A liquid have a definite volume. When we say a volume is definite, it means the volume is fixed and does not change. The volume of liquids is definite for a particular mass of the liquid and does not change
Final answer:
The statement 'Liquids have no definite volume' is not true. Liquids do have a definite volume, but no definite shape. The boiling point of a liquid changes with atmospheric pressure.
Explanation:
The statement ' Liquids have no definite volume' is NOT a true statement about liquids. In fact, while they do not have a definite shape and take on the shape of their container, liquids do have a definite volume under given conditions.
Statements 2 and 3 accurately describe that the boiling point of a liquid varies with changes in atmospheric pressure. Specifically, the boiling point increases with increasing atmospheric pressure, and conversely decreases with decreasing atmospheric pressure.
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Which two particles in an atom have the same mass ? protons and electrons or protons and neutrons
Given the balanced ionic equation representing a reaction:2A1(s) + 3Cu2+(aq) ==>2A13+(aq) + 3Cu(s) Which half-reaction represents the reduction that occurs?(I ) Al ==> Al3+ + 3e- (2) Al3+ + 3e- ==>Al (3) Cu ==> Cu2+ + 2e- (4) Cu2+ + 2e- ==>Cu
According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 2C(s) + 3H2(g) → C2H6(g) 2C(s) + 2H2(g) → C2H4(g) N2(g) + 3H2(g) → 2NH4(g) N2(g) + O2(g) → 2NO(g)
Which has should only be produced in a fume hood?a. Cl2 b. CO2 c. H2 d. H2O
Answers
b. valence
c. metallic
d. covalent
Answers
I hope this helps let me know in the comments if anything is unclear.
An ionic bond is when we transfer electrons. This means that the atoms would gain a charge.
Na+Cl- would be the resulting compound because:-
Na (sodium) loses : which means it would GAIN a positive charge.
Cl (chlorine) gains: which means it GAINS a negative charge.
Answers
Power is not a vector quantity in the provided query. The correct answer is option c.
A vector quantity is a physical quantity with magnitude as well as direction. Displacement, velocity, acceleration, and force are the types of vector quantities.
In contrast, power is a scalar quantity, which means it has simply magnitude and no direction. Power is measured in watts (W) or joules per second (J/s) and is defined as the rate at which work is done or energy is moved.
Therefore, the physical quantity that is not a vector quantity is option c, power.
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The given question is incomplete. The complete question is:
Which of the following is not a vector quantity? Select one:
a. acceleration
b. displacement
c. power
d. velocity.
one atom of nitrogen and one atom of oxygen.
B.
two atoms of nitrogen and one atom of oxygen.
C.
two atoms of nitrogen.
D.
one atom of nitrogen.
Answers
Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of two atoms of nitrogen.
The correct option is C.
Explanation:
Nitrogen gas has the chemical formula , which means that two atoms of nitrogen element combined to form nitrogen gas.
The combination of two atoms of element nitrogen produce dinitrogen atom.
Dinitrogen is the nitrogen gas usually present in atmosphere of the earth in abundance.
2 atoms of nitrogen element
N + N =
the gas is colorless and odorless formed at standard condition of temperature and pressure. The two nitrogen atoms are tightly bonded with triple bonds in between the atoms.
Answers
Part 1: If 1 mol = 6.022 x 10^23 atoms of anything, including Na, then,
4.0 mol Na = 4 x 6.022 x 10^23 atoms Na = 2.4 x 10^24 atoms Na
Part 2: 3.01E23 / 6.022E23 and the answer comes out to .49983394 you would then round this to .500 with significant figures. Hope I helped. :)
1=2.4*10^24 atoms NA
2= .49983394 round this to .500
Hope this helps!
Answers
15.0 moles of ammonium sulfate are formed by the reaction of 30.0 moles of ammonia with sulfuric acid.
Let's consider the reaction between ammonia and sulfuric acid to produce ammonium sulfate.
2 NH₃ + H₂SO₄ ⇒ (NH₄)₂SO₄
The molar ratio of NH₃ to (NH₄)₂SO₄ is 2:1. The moles of (NH₄)₂SO₄ produced from 30.0 moles of NH₃ are:
15.0 moles of ammonium sulfate are formed by the reaction of 30.0 moles of ammonia with sulfuric acid.
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