A scientist studying the properties of two different gases recorded this data. If the scientist wants to study gas samples A and B at
standard temperature and pressure (STP), what must she do before continuing experimentation?
Answers
Answer:
C. Decrease the pressure of Gas A and increase the temperature of Gas B.
Explanation:
The values for standard temperature and pressure (STP) are zero degrees Celsius and one atmosphere. Since the temperature of gas A is higher than zero degrees, it will have to be reduced. Since the pressure of gas B is less than one atmosphere, it will have to be increased.
Related Questions
negative ions form when atoms _______ valence electrons.
Answers
Answer:
Negatively charged ions are called anions, and an anion is formed when an atom gains an electron. Thus, the atom has an extra charge of electrons,
Explanation:
so it becomes negatively charged.
Negative ions (or anions) are atoms that have gained electrons.
Electrons have a negative charge so if an atom is getting more of them, it's becoming more negative.
which two particles would be attracted to each other?
Answers
Answer: protons and electrons.
Explanation:
In a simple covalent compound, which statement is TRUE
about naming the second element in the compound?
a
The second element to be named is the one closer
to the left side of the periodic table.
The second element is given a prefix to represent
b how many of the element are present, and there
are no other changes to the element's name.
The second element to be named is the one closer
c to the right side of the periodic table, and it is given
the suffix -ide.
The element closer the right side of the periodic
d table is given its usual element name with no
changes.
Answers
Answer:
C:to the right side of the periodic table, and it is given
the suffix -ide.
Briefly discuss the 3 most important properties of metals
Answers
Answer: Luster: Metals are shiny when cut, scratched, or polished.
Malleability: Metals are strong but malleable, which means that they can be easily bent or shaped.
Conductivity: Metals are excellent conductors of electricity and heat.
Explanation: Hope this helped!
15.24. Calcium hydroxide, also known as slaked lime, is used in industrial processes in which low concentrations of base are required. Only 0.16 g of Ca(OH)2 dissolves in 100 mL of water at 25°C. What is the concentration of hydroxide ions in 250 mL of a solution containing the maximum amount of dissolved calcium hydroxide?
Answers
The concentration of the hydroxide ions, OH¯ in 250 mL of the solution containing the maximum amount of dissolved calcium hydroxide is 0.01728 M
We'll begin by calculating the number of mole of in 0.16 g of Ca(OH)₂. This can be obtained as follow:
Mass of Ca(OH)₂ = 0.16 g
Molar mass of Ca(OH)₂ = 40 + 2[16 + 1] = 74 g/mol
Mole of Ca(OH)₂ =?Mole = mass / molar mass
Mole of Ca(OH)₂ = 0.16 / 74
Mole of Ca(OH)₂ = 0.00216 mole Next, we shall determine the molarity of the stock solution of Ca(OH)₂.Mole of Ca(OH)₂ = 0.00216 mole
Volume = 100 mL = 100 / 1000 = 0.1 L
Molarity of Ca(OH)₂ =?Molarity = mole / Volume
Molarity of Ca(OH)₂ = 0.00216 / 0.1
Molarity of Ca(OH)₂ = 0.0216 MNext, we shall determine the molarity of the diluted solution. This can be obtained as follow:Volume of stock solution (V₁) = 100 mL
Molarity of stock solution (M₁) = 0.0216 M
Volume of diluted solution (V₂) = 250 mL
Molarity of diluted solution (M₂) =?M₁V₁ = M₂V₂0.0216 × 100 = M₂ × 250
2.16 = M₂ × 250
Divide both side by 250
M₂ = 2.16 / 250
M₂ = 0.00864 MThus, the molarity of the diluted solution is 0.00864 M
Finally, we shall determine the concentration of the hydroxide ions, OH¯ in the diluted solution. This can be obtained as follow:Ca(OH)₂(aq) —> Ca²⁺(aq) + 2OH¯(aq)
From the balanced equation above,
1 mole of Ca(OH)₂ contains 2 moles of OH¯
Therefore,
0.00864 M Ca(OH)₂ will contain = 2 × 0.00864 = 0.01728 M OH¯
Thus, the concentration of the hydroxide ions, OH¯ in 250 mL of the solution containing the maximum amount of dissolved calcium hydroxide is 0.01728 M
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Which factor of production would water be considered?
A) Land
B)Labor
C) capital
D)entrepreneurship
Answers
Explanation:
land.
I think it is the answer
Answer:
land .......................
Can someone help me please I would really appreciated
Answers
Explanation:
whats the question. cause I didn't see it
as a bystander, the _______ approach doesn’t work when drugs or alcohol are involved, as the person you’re trying to stop is more likely to become defensive or hostile.
Answers
When trying to step into an argument or misunderstanding between people as a bystander with drugs and alcohol involved, the direct approach won't work.
When trying to make peace between quarelling individuals as a bystander, the direct approach would fail if alcohol or drugs is being held as the prsin might see you as a villian. Only when the person knows and trusts you will this approach work. Hence, when drugs or alcohol is involved, other methods of rendering help should be employed.Therefore, the direct approach won't work in the this scenario.
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What is patagium and what do you meant by prehensile tail
Answers
The patagium (plural: patagia) is a membranous structure that assists an animal in gliding or flight. The structure is found in living and extinct groups of animals including bats, birds, some dromaeosaurs, pterosaurs, gliding mammals, some flying lizards, and flying frogs.
A prehensile tail is the tail of an animal that has adapted to grasp or hold objects. Fully prehensile tails can be used to hold and manipulate objects, and in particular to aid arboreal creatures in finding and eating food in the trees.
Answer:
patagium in American English
1. a wing membrane, as of a bat. 2. the extensible fold of skin of certain insects or of a gliding mammal or reptile, as a flying squirrel.
Explanation:
A prehensile tail pertains to the tail of certain animals that enable the latter to grasp or hold objects. ... A fully prehensile tail is one in which the animal can fully hold on to and manipulate an object with its tail.
cân bằng phương trình Al + HCl → AlCl3 + H2
Answers
Answer:
Explanation:
Balance the reaction of Al + HCl = AlCl3 + H2 using this chemical equation balancer!
Beth measured her brand new figurine to be
17.550 cm tall. However, the manufacturer
claims that it is 17.260 cm tall. What is the
percent error in Beth's measurement?
A 1.68%
B
1.65%
Answers
Answer: A
Explanation: I just answered mine
What two factors must be held constant for density to be a constant ratio?
Answers
Answer:
Temperature and Pressure
Explanation:
Temperature and pressure cause change in volume.
So any change in volume will alter the ratio of density as given by equation of density.
Density = mass/ volume
Change in volume will alter the ratio.
Kindly mark it branliest if the answer is little bit satisfying.
Why do you think lone pairs of electrons create greater repulsion when located near other
lone pairs or bonding pairs? Orbitals containing lone pairs of electrons require more space
than orbitals containing bonding pairs. Why do you think this is the case? What does the
presence of one or more lone pairs of electrons do to the bond angles in a molecule (in other
words, do bond angles get larger, smaller, or remain unchanged?)
Answers
When there are lone pairs on the valence shell of the central atom in a molecule, the bond angle is decreased.
The shape of molecules depend on the number of electron pairs on the valence shell of the molecules. These electron pairs could be lone pairs or bond pairs. Lone pairs occupy more space around the central atom since it is attracted to only one nucleus compared to bond pairs which are attracted to two nuclei.
When lone pairs are present on the central atom in a molecule, they tend to "squeeze" the molecule thereby decreasing the bond angle in the molecule. Hence, presence of one or more lone pairs of electrons make the bond angles get smaller.
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Since sodium chloride is classified as a compound, a sample of it contains
A. atoms that are gases, liquids, and solids.
O
B. more than one kind of atom.
C. matter that cannot be reduced to atoms.
O
D. a solution of atoms and molecules.
Answers
Answer:
more than one kind of atom. a solution of atoms and molecules.
Explanation:
a compound always contains more than one type of atom.
Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. Rather, it contains equal numbers of sodium ions with a charge of positive one (Na+) and chloride ions with a charge of negative one (Cl−).
What happens if metal is in acid?
I'm having a blank
Answers
Answer:
it dissolves or disintegrates
Explanation:
I need help with this question can someone help me with it
Answers
Answer:
sorry but can't understand your question properly
How to determine the speed of light.
Please, if you wish not to receive multiple notifications, ignore answering this, for which you will be stressed and annoyed.
Answers
Answer:
Hey mate....
Explanation:
This is ur answer....
By adjusting the path length while observing the interference pattern and carefully measuring the change in path length, the wavelength of the light (λ) can be determined. The speed of light is then calculated using the equation c = λf.
Hope it helps!
Brainliest pls!
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Use the diagram to identify each item.
Answers
Explanation:
atomic no. is 42
chemical symbol is Mo
no. of protons is 42
atomic mass is 95.95
no. of electrons is 42
no. of electron in outer most shell is 1
no of electrons in the n 3 shell is 18
no. of neutron is 96
The element molybdenum is 42nd element in periodic table with the symbol Mo and a mass of 96. It have 42 electrons and 42 protons.
What is Molybdenum?Molybdenum (Mo) is a transition metal in periodic table included in the d-block. The atomic number of molybdenum is 42 which is the number of protons and electrons in it.
The atomic number of a neutral atom is equal to the number of electrons in it. For a neutral atom the number of electrons and protons are equal and thus the number of both electrons and protons in Mo is 42.
Mass number is the sum of number protons and neutrons in an atom. The mass number of Mo is 96 and number of protons is 42. Thus, the number of neutrons is 96 -42 = 54.
The outer shells of Mo are 4d and 5s containing 4 and 2 electrons respectively. Thus the number of outer electrons is 6.The level n= 3 is M shell which contains 18 electrons for Mo.
To find more about Mo, refer the link below:
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#SPJ5
quotes for climate change
for example ‘’CLIMATE CHANGE IS REAL!’’
‘’SMALL CNAGES CAN MAKE A DIEFFENCE!’’
give me 3 and more
Answers
Answer:
Explanation:
WAKE FOR CLIMATE CHANGE IS NOT FAKE
SAVE THE GLACIERS
HELP THE ARCTIC ANIMALS
write the stracture of 2,2-dimetyl butane
Answers
Answer:
Explanation:
Let's break it down:
Butane- A 4 carbon alkaneMethyl - A CH₃ group2,2 - Both the Methyl groups are attached at carbon 2We can now draw the structure of 2,2-dimethyl butane using the following steps:
Draw the backbone (butane)Draw the substituents (2 methyl groups at carbon 2)on an energy diagram, where is a stable equilibrium point?
Answers
Answer:
1.2
Explanation:
What is the range of valence electrons that metals have?
Answers
As the volume of a gas at 101.3kPa changes from 30mL to 95mL the volume of the gas will?
1)Increases
2) Decreases
3 Remains the same
Answers
hello
Describe the structure of solid potassium iodide.
Answers
Answer:
Potassium iodide is a metal-halide salt that has an ionic connection between the potassium cation (K+) and the iodide anion (I–). It is colorless to white and appears as cubical crystals, powder, or white granules. It has a salty, astringent flavor. This chemical is made from iodine and potassium hydroxide.
1. Select the animals which are vertibrates
A. Tigers
B. Lions
C. Butterfly
D. Frogs
E. Ants
F. Spiders
G. Dogs
H. Cats
I. Eagles
J. Snail
Answers
Answer:
A.Tigers
B.Lions
C.Frogs
G.Dogs
H.Cats
I.Eagles
What is the wavelength of a radio wave that has a frequency of 9.40 X 10^8Hz?
3.1
Answers
Explanation:
Wavelength relates to frequency as follows:
λ
=
v
f
in which
f
is the frequency,
v
is the speed of light, and
λ
is the wavelength.
Filling this in for the example:
v
=
3
⋅
10
8
m
s
f
=
4.47
⋅
10
14
H
z
=
4.47
⋅
10
14
s
−
1
λ
=
3
⋅
10
8
m
s
4.47
⋅
10
14
s
−
1
=
6.71
⋅
10
−
7
m
from m to nm is
⋅
10
9
So the wavelength is:
671
n
m
(red light).
A central atom is found to have one double bond, one single bond, and one non-bonding pair of electrons. how many electron domains does the central atom have?
Answers
Answer:
A central atom is found to have one double bond, one single bond, and one non-bonding pair of electrons
Atoms share one or more pairs of electrons.
Options:
Ionic Bond or Covalent Bond?
Answers
Answer:
covalent bonds
Explanation:
ionic transfer of e^- ions formed (charges)
ionic=non-metal+ metal
ex: F+Ca
covalent sharing e^- no true charges
covalent= non-metal+ non-metal
ex: F+P
( my notes)
When the skydiver is falling at a constant velocity after the parachute is open, what is their acceleration?
Answers
Answer:
Once the parachute is opened, the air resistance overwhelms the downward force of gravity. The net force and the acceleration on the falling skydiver is upward. ... The skydiver thus slows down. As the speed decreases, the amount of air resistance also decreases until once more the skydiver reaches a terminal velocity.
When the skydiver is falling at a constant velocity after the parachute is open, acceleration is zero.
The acceleration of the skydiver will be zero shortly after the parachute opens, but we can not call it as “acceleration due to gravity”.It's the acceleration due to gravity and air resistance together, and the forces cancel each other out to give an acceleration of zero.Once the parachute is opened, the air resistance overwhelms the downward force of gravity. The net force and the acceleration on the falling skydiver is upward.Learn more:
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Someone help me with this I will make you brain
Answers
Answer:
D, took the test
Explanation:
Answer:
D: To show how using a list of examples can strengthen a claim
Hope this helps! <3
