Answer:
Your answer should be D
Please help-- 16 pts!
A sample of oxygen gas (O2) applies 152 mmHg pressure on the walls of an 11.2 L steel container at 273 K. Assume ideal gas behavior. The ideal gas constant is 62.36 (L·mmHg)/(K·mol), and the molar mass of oxygen gas is 32 g/mol.
How many grams of oxygen gas are in the steel container?
16 g
1.6 g
32 g
3.2 g
Answer:
B) 1.6 g
Explanation:
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Pla helppp due in 5 minutes!!..
Which of the following is a strong base?
a. h2o
b. NH3
c.CaCo3
d. NaOh
Answer:
d. naoh
Explanation:
Will give brainliest
What type of bond is formed between atoms of a molecule of the product of this reaction? How can you determine which type of bond is formed between these atoms?
2 H2(g) + O2(g)⇒ 2 H2O(l)
Answer:
Explanation:
A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
Answer:
Covalent bond
Explanation: Hydrogen and Oxygen are both non-metals, with a low difference in electronegativity. They will share electrons.
Which type of energy is always generated, at least in small amounts, when an energy transfer or transformation accounts? A. Potential energy
B.thermal energy
C. Chemical energy
D. Radiant energy
the characterstic part of a molecule that determines its chemical properties is known as
Answer: The atomic number indicates the number of protons within the core of an atom. The atomic number is an important concept of chemistry and quantum mechanics. An element and its place within the periodic table are derived from this concept. ... These electrons mainly determine the chemical behaviour of an atom. The chemical properties of an element, are determined by the number of protons in the nucleus. This number of protons is called the atomic number. The mass of the atom, its atomic mass, depends upon the sum of the number of protons and the number of neutrons present in the nucleus.
Hope this helps....... Stay safe and have a Merry Christmas!!!!!!! :D
Explanation:
Outer Electrons/Valence Electrons determine the chemical properties....Or Somehow we can say in organic compounds, functional group determine mostly chemical properties...
What information does a solubility table give?
Answer:
A solubility chart with a list of ions
Explanation:
when mixed with other ions, they can become precipitates or remain aqueous. The following chart shows the solubility of multiple independent and various compounds, in water, at a pressure of 1 atm and at room temperature (approx. 293.15 K).
Answer:
it tells which compounds will dissolve in water
Explanation:
a p e x :)
___C + ___S8 → ___CS2
Answer:
4,1,4
Explanation:
Balancing a synthesis equation
what is the mass of 1.506 x 10^24 atoms of Argon
Answer:
99.90g
Explanation:
1.506 x 10^24atoms × [tex]\frac{1mol}{6.022*10^{23}atoms}[/tex] × [tex]\frac{39.948grams}{1mol}[/tex] = 99.90grams
multiply the atom by constant and by its molar mass
1.506 x 10²⁴ atoms of argons gas is two moles. One mole of argon weighs 35.9 g. Thus mass of two moles of argon is 89.9 g.
What is argon?Argon is 18th element in periodic table. It is placed in 18 the group and it is a noble gas or inert gas with completely filled orbitals. The group members of argon are neon, krypton, xenon and radon.
One mole of every substance contains 6.022 × 10²³ atoms. This number is called Avogadro number. Therefore, one mole of every element contains Avogadro number of atoms. The atomic mass of an element is the mass of one mole of that element.
Mass of one mole of argon is 35.9 g. Thus, it contains 6.022 × 10²³ atoms. Hence, the number of moles that contains 1.506 x 10²⁴ atoms is calculated as follows:
no.of moles = 1.506 x 10²⁴ / 6.022 × 10²³
= 2.5 moles.
The mass of 2.5 moles of argon is 2.5 × 35.9 = 89.9 g. Hence, the mass of 1.506 x 10²⁴ argon atoms is 89.9 g.
To find more about argon, refer the link:
https://brainly.com/question/133359
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How many grams is 1.700 moles of KCl?
Answer:126.73720999999999
Explanation:
Answer:
126.7 grams/mole of KCl
One isotope of a nonmetallic element has mass num- ber 127 and 74 neutrons in the nucleus. The anion derived from the isotope has 54 electrons. Write the symbol for this anion.
Answer:
I⁻
Explanation:
The identity of the element is obtained when the proton number is known.
Mass Number = 127
Neutrons = 74
Number of protons is obtained from;
Protons = Mass Number - Number of Neutrons
Protons = 127 - 74 = 53
The element is Iodine and it's symbol is I.
However, The anion derived from the isotope has 54 electrons
A neutral Iodine should have 53 electrons. This means it has gained a single electron. The symbol is now written as;
I⁻
highlight the correct answer - polar or non polar
1. A (polar / non-polar) bond is one where there are more shared electrons grouped around one atom than the other.
2. A (polar / non-polar) bond is one where the electrons are evenly distributed between the two atoms sharing electrons.
3. A molecule with symmetry is (polar / non-polar).
4. A molecule that does not have symmetry is (polar / non-polar).
5. A (polar / non-polar) molecule has its valence electrons evenly distributed around the molecule.
6. A (polar / non-polar) molecule has one of its sides with more or fewer electrons than the other sides.
Answer:
1. Polar
2. Non-polar
3. Non-polar
4. Polar
5. Non-polar
6. Polar
Explanation:
Polar bonds are formed between molecules that share electrons unequally/unevenly. In a polar molecule, one atom is more electronegative than the other i.e it attracts/pulls more electrons than the other atom, hence, it ends up leaving the other atom with a positive charge i.e fewer electrons around its atom. Also, every molecule that has a symmetrical arrangement is NON-POLAR while the opposite is POLAR.
Based on this, the answers to the asked questions are in BOLD.
1. A POLAR bond is one where there are more shared electrons grouped around one atom than the other.
2. A NON-POLAR bond is one where the electrons are evenly distributed between the two atoms sharing electrons.
3. A molecule with symmetry is NON-POLAR
4. A molecule that does not have symmetry is POLAR.
5. A NON-POLAR molecule has its valence electrons evenly distributed around the molecule.
6. A POLAR molecule has one of its sides with more or fewer electrons than the other sides.
I need help :(((((((((((((((
During photosynthesis, plants take carbon dioxide from the air and water and convert them into:
A. amino acids
B. glucose and oxygen
C. oxygen and chlorophyll
D. water and sunlight
Answer:
c I am pretty sure it's c because I learned this today in science and I think that what it is but if it's not see then it's I don't know
Hi! Can you help me with this?
Is a hydrogen gas a element, compound, or mixture?
Answer:
Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.
Explanation:
Hope this helped!!!
-BB
please mark me brainly
Answer:
It's an element. :)
Explanation:
what does the pH scale for acids and bases range from?
Answer:
Anything below 7.0 is acidic, and anything above 7.0 is alkaline, or basic. pH scale, ranging from 0 (very acidic) to 14 (very basic/alkaline) and listing the pH values of common substances.
Explanation:
PRESS THE CROWN
The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
Explanation:
A. 207 kJ
B. 4730 kJ
C. 9460 kJ
D. 414 kJ
Answer:
[tex]\boxed {\boxed {\sf C. \ 9460 \ kJ}}[/tex]
Explanation:
The formula we must use is given to us:
[tex]q=mL_{vapor}[/tex]
q is the energy, m is the mass, and L(vapor) is the latent heat of vaporization.
The energy is what we calculate and the mass is 2 kilograms. We need to find the latent heat of vaporization, which is on the table.
We know the sample is copper. Find that element on the table, then the third box tells us it's latent heat of vaporization is 4730 kJ/kgNow we know:
[tex]m= 2 \ kg \\L_{vapor}=4730 \ kJ/kg[/tex]
Substitute the values into the formula.
[tex]q=(2 \ kg ) * (4730 \ kJ/kg)[/tex]
Multiply. Note that the kilograms (kg) will cancel each other out.
[tex]q= 2* 4730 \ kJ[/tex]
[tex]q= 9460 \ kJ[/tex]
9460 kilojoules are required to vaporize 2 kilograms of copper.
In the above picture, suppose the rod was follow instead of solid. Which statement is correct?
Due to convection, glob A will melt faster
Due to conduction, glob C will melt first
Due to convection, glob A will take longer to melt
Due to conduction, glob A will melt faster
Answer:
Due to conduction, glob A will melt faster
Determine the LIMITING reactant in the following balanced equation:
2KBr + CI2 --> 2KCI+ Br2, when 4g of KBr react with 6 g of CI . MM(KBr)=
119 g/mol MM(CI2)=70 g/mol *
Answer:
KBr is limiting reactant.
Explanation:
Given data:
Mass of KBr =4g
Mass of Cl₂ = 6 g
Limiting reactant = ?
Solution:
Chemical equation:
2KBr + Cl₂ → 2KCl + Br₂
Number of moles of KBr:
Number of moles = mass/molar mass
Number of moles = 4 g/ 119 gmol
Number of moles = 0.03 mol
Number of moles of Cl₂:
Number of moles = mass/molar mass
Number of moles = 6 g/ 70 gmol
Number of moles = 0.09 mol
Now we will compare the moles of reactant with product.
KBr : KCl
2 : 2
0.03 : 0.03
KBr : Br₂
2 : 1
0.03 : 1/2×0.03= 0.015
Cl₂ : KCl
1 : 2
0.09 : 2/1×0.09 = 0.18
Cl₂ : Br₂
1 : 1
0.09 : 0.09
Less number of moles of product are formed by the KBr thus it will act as limiting reactant while Cl₂ is present in excess.
How many moles are equal to 12.65 grams of Al2(SO4)3?
Answer:
0.03697 mol Al₂(SO₄)₃
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
12.65 g Al₂(SO₄)₃
Step 2: Identify Conversions
Molar Mass of Al - 26.98 g/mol
Molar Mass of S - 32.07 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Al₂(SO₄)₃ - 2(26.98) + 3(32.07) + 12(16.00) = 342.17 g/mol
Step 3: Convert
[tex]12.65 \ g \ Al_2(SO_4)_3(\frac{1 \ mol \ Al_2(SO_4)_3}{342.17 \ g \ Al_2(SO_4)_3} )[/tex] = 0.03697 mol Al₂(SO₄)₃
Step 4: Check
We are given 4 sig figs. Follow sig fig rules and round.
We already have 4 sig figs in the final answer, so no need to round.
The density of lead is 11.3g/ml. What is the volume in ml of 50.75g of lead?
Answer:
4.49 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\[/tex]
From the question we have
[tex]volume = \frac{50.75}{11.3} \\ = 4.491150...[/tex]
We have the final answer as
4.49 mLHope this helps you
true or false boron carbon and nitrogen I have the same valence electrons
Answer:
false
Explanation:
Because in a periodic table they are not located below each other and therefore do not have the same number of electrons.
Please answer for me.
Answer:
54.5%
Explanation:
The percentage composition of oxygen in C₆H₈O₆ can be obtained as follow:
Molar mass of C₆H₈O₆ = (12×6) + (8×1) + (16×6)
= 72 + 8 + 96
= 176 g/mol
Next, there are 6 oxygen atoms in C₆H₈O₆. Therefore the mass of oxygen in C₆H₈O₆ is:
Mass of Oxygen = 16 × 6 = 96 g
Finally, we shall determine the percentage composition of oxygen in C₆H₈O₆ as follow:
Percentage of oxygen =
Mass of Oxygen/mass of C₆H₈O₆ × 100
Percentage of oxygen = 96 / 176 × 100
Percentage of oxygen = 54.5%
Thus, the percentage composition of oxygen in C₆H₈O₆ is 54.5%.
WHICH DEFINTIOION GOES TO EACH LETTER/WORD. FILL IN THE BLANK
-
The place inside Earth where the energy is an earthquake is centered is the ________.
-
The instrument used to record earthquake activity is a/an __________.
-
The __________ of an earthquake is the point on the surface of Earth directly above the focus.
-
The __________ of an earthquake is based on the amplitude of the seismic waves.
-
An undersea earthquake may produce a/an _________.
-
Buildings constructed to withstand most earthquakes are said to be _________ ________.
-
_______ is magma that has flowed onto Earth's surface.
-
The __________ is divided into about 13 major plates.
-
________ are long cracks produced at divergent plate boundaries.
-
The __________ scale measures the magnitude of an earthquake.
-
The seismic waves that do the most damage to structures and property during an earthquake are _________ _________.
-
An avalanche of glowing rocks flowing on a cushion of hot gases is called a/an ___________ __________.
-
A large, broad volcano with gently sloping sides that is formed by the build-up of basaltic layers is a ________ volcano.
-
A relatively small volcano formed by moderate to explosive eruptions of tephra is a _________________ volcano.
-
A steep-sided volcano formed from alternating layers of violent eruptions of tephra and quieter eruptions of lava is a ___________ volcano.
-
The movement of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound is called a/an ______________.
-
A fracture that occurs when rocks break and that results in relative movement of opposing sides is called a ________.
A.
lava
B.
fault
C.
seismic safe
E.
shield
F.
cinder-cone
G.
focus
H.
tsunami
I.
rifts
J.
seismograph
K.
hot spot
L.
surface waves
M.
epicenter
N.
Richter
O.
lithosphere
P.
earthquake
R.
composite
T.
magnitude
A diagram represents the life cylce of a frog. The diagram shows that, in a frog...
1) methods of sexually reproduction depends on the species
2) metabolism is the sum of all chemical reactions
3) body structures change during development
4) Offspring always look like the adult
PLEASE HELP AND ANSWER
Answer:
I think 1 option ok basically I am a scientist
Answer:
(3)
Explanation:
A. 1720 kJ
B. 125.6 kJ
C. 3440 kJ
D. 4730 kJ
Answer:
Q = 3440Kj
Explanation:
Given data:
Mass of gold = 2kg
Latent heat of vaporization = 1720 Kj/Kg
Energy required to vaporize 2kg gold = ?
Solution:
Equation
Q= mLvap
It is given that heat required to vaporize the one kilogram gold is 1720 Kj thus, for 2 kg
by putting values,
Q= 2kg × 1720 Kj/Kg
Q = 3440Kj
Which statement describes clean air as a natural source
Answer:
as I guess it is last statement
the process by which alkanoic acid reacts reversibly with alkanols is known as what?
Answer:
esterification process
4. Substances that existed before mixing-still exist-after substances-are-mixed----
True of false
-how dose photosynthesis work on animals and what is it called.
Explanation:
carbon dioxide is it gas that is present in the air plants collect carbon dioxide through tiny holes called Stomates. during the process of photosynthesis, Stomates are also used to expel a gas called oxygen. Oxygen is very important for animals like human -- we need it to breathe !
