Answer:
the first oneeeee
Explanation:
this i because it impacts as in change
WHAT BLOCK IN THE PICTURE HAS:
The highest density? The lowest density?
How do you know?
Answer:
the highest is "A" and the lower is "C"
Identify the state(s) of matter that each property describes.
takes the shape of its container:
gas
liquid
solid
fills all available space:
gas
liquid
solid
maintains its shape:
gas
liquid
solid
can be poured:
gas
liquid
solid
is compressible:
gas
liquid
solid
has a fixed volume:
gas
liquid
solid
Answer:
See below!
Explanation:
Gases and liquids take the shape of the container.
A gas fills all available space.
A solid maintains its shape.
A liquid can be poured.
A gas is compressible.
A liquid and solid have fixed volumes.
Identification of the state(s) of matter that each property describes.
The Gas and liquid takes the shape of the container.A gas fills all available space.A solid maintains its shape.A liquid can be poured.A gas is compressible.A liquid and solid have fixed volumes.Difference between properties of solid, liquid and gas?Solids liquids Gases
Rigidity Highly rigid Less rigid Not rigid
Shape Difinite Acquires shape Acquires shape
of the container. of the container.
Volume Difinite Difinite Indifinite
Compressibility Not Slightly Highly
compressible compressible compressible
Fluidity Can not flow Can flow Can flow
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Will a paper airplane with longer wings fly farther than shorter wings? IV DV Hypothesis
Answer: yes
Explanation:
longer wing
CO2 + H2O → C6H12O2 + O2
In a chemical equation, such as the one for photosynthesis above, which is thec
correct order of terms from left to right?
Products, Yield, Reactants
There is no correct order, any order is acceptable.
O Yield, Reactants, Products
Answer:
B
Explanation:
Answer:
bExplanation:
This is due in 2 minutes help!!!..
Answer:A
Explanation: I think I am right
Why is The Law of Conservation of Matter a law and not a theory? will brainlist
g is the maximum number of grams of ammonia, NH , which can be obtained from the reaction of 10.0 g of H and 80.0 g of N
Answer:
56.67 g of NH₃.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
N₂ + 3H₂ —> 2NH₃
Next, we shall determine the masses of N₂ and H₂ that reacted and the mass of NH₃ produced from the balanced equation. This is illustrated below:
Molar mass of N₂ = 14 × 2 = 28 g/mol
Mass of N₂ from the balanced equation = 1 × 28 = 28 g
Molar mass of H₂ = 1 × 2 = 2 g/mol
Mass of H₂ from the balanced equation = 3 × 2 = 6 g
Molar mass of NH₃ = 14 + (3×1) = 14 + 3 = 17 g/mol
Mass of NH₃ from the balanced equation = 2 × 17 = 34 g
SUMMARY:
From the balanced equation above,
28 g of N₂ reacted with 6 g of H₂ to produce 34 g of NH₃
Next, we shall determine the limiting reactant. This can be obtained as follow:
From the balanced equation above,
28 g of N₂ reacted with 6 g of H₂.
Therefore, 80 g of N₂ will react with = (80 × 6)/28 = 17.14 g of H₂.
We can see from the calculation made above that a higher mass (i.e 17.14 g) of H₂ than what was given (i.e 10 g) is required to react completely with 80 g of N₂. Thus, H₂ is the limiting reactant and N₂ is the excess reactant.
Finally, we shall determine the maximum mass of ammonia (NH₃) produced from the reaction.
To obtain the maximum mass of NH₃, the limiting reactant will be used because all of it is consumed in the reaction.
The limiting reactant is H₂ and the maximum mass of NH₃ can be obtained as follow:
From the balanced equation above,
6 g of H₂ reacted to produce 34 g of NH₃.
Therefore, 10 g of H₂ will react to produce = (10 × 34)/6 = 56.67 g of NH₃.
Therefore, 56.67 g of NH₃ is produced from the reaction.
The molar mass of a compound is equal to which of the following?
Group of answer choices
the sum of the number of protons in the compound
the sum of the atomic numbers of the elements
the sum of the number of electrons in the compound
the sum of the atomic masses of the elements
Answer:
the sum of the atomic masses of the elements
Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate. Therefore, the correct option is option D.
What is mass?Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes. It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.
The relative mass is the mass that is with respect to mass of a matter that is considered as standard. In chemistry relative mass is equal to the mass of one-twelfth the mass of C-12 isotope .
Out of relative and average atomic mass, relative atomic mass is more accurate as it is calculated with respect to a standard quantity. Molar mass is mass of 1 mole of a compound. Molar mass is the sum of the atomic masses of the elements.
Therefore, the correct option is option D.
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On the island of Hawaii, Keanu notices that the sand on the beach is black, the same color as the rock formations on the island. Keanu realizes the sand used to be part of the rock formations. How did material from the rock formations turn into sand?
a
Rays from the sun shone down on the rock, and it broke into pieces.
b
If anything were left out for a long time, it would break into small pieces.
c
The sand was formed by earthquakes, tsunamis, and other natural disasters. These disasters were strong enough to break the rock into small pieces.
d
Wind and rain interacted with the rock, breaking it into small pieces.
Answer: d
Explanation: Wind and rain interacted with the rock, breaking it into small pieces.
Keanu realizes the sand used to be part of the rock formations. Wind and rain interacted with the rock, breaking it into small pieces and turn into sand. Therefore, option D is correct.
What is rock formation?A rock formation refers to a specific arrangement or pattern of rocks in a particular area that has formed over a long period of time due to geological processes such as erosion, weathering, and tectonic activity.
Wind and rain interacted with the rock, breaking it into small pieces. Over time, the forces of weathering and erosion can break down rock formations into smaller and smaller particles, including sand.
Wind can carry these particles away from their original location and deposit them elsewhere, such as on a nearby beach. In the case of the black sand on the beach in Hawaii, it is likely that the sand was formed from the weathering and erosion of the volcanic rock that makes up much of the island.
Thus, option D is correct.
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The very top layer of Earth is the crust, which is relatively quite thin when compared to the other layers of Earth. Which of these best describes the composition of Earths crust?
Group of answer choices
Rocky
Gaseous
Liquid
Metallic
PLEASEEEE HELP MEEEEEEEEEEEEEEEEEEE
Answer:
D
Explanation:
Answer:
Girl it's "D"
Explanation:
Formation of a new substance is a sign of a
change.
A)
Physical
B)
Chemical
Kinetic
D)
Electrical
Sound waves can travel across outer space true or false
Answer:
False
Explanation:
sounds waves can't travel so far
Can someone please help me I've searched all over and can't find these answers Ive uploaded 3 images too make it easier on you I too a photo of part E to help with part F please help all I need is answers too part D and F I will give brainiest
Answer:
Hey.
Explanation:
I will paste my explanation in the comments because apparently my answer has inappropriate words
Which of the following elements has the smallest ionic radius?
How many iodine atoms are there in one molecule of HI
Answer:
There is 1.
Explanation:
There is only 1 iodine atom in HI. In addition to this, there is 1 hydrogen atom in HI.
According to the chemical formula, there is one iodine atom in one molecule of hydrogen iodide.
What is chemical formula?Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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describe what happens in each stage of mitosis
Answer:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. ... These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.
Explanation:
How many electrons are in the nucleus of an atom with an atomic number of 7?!!
HELP HELP HELP! NOW ANSWER THE IMGAGE'S 50POINTS!
[tex]\rule{100}{3}[/tex]
Multicellular Plants and animals have organs with specific function.
Which structures do eukaryotic cells have for performing functions?
Ans:-
Organelles
[tex]\rule{100}{3}[/tex]
Which process takes place with in mitochondria?
Ans:-
Cellular Respiration
Answer:
The ribosomes on the rough endoplasmic reticulum (ER) use the RNA to create different types of proteins needed by the body. These proteins are then modified, packaged, and transported by the endomembrane system, which includes organelles such as the Golgi apparatus and lysosomes
it is a property of a substance that is independent of amount and used to identify substance?
Answer:
Some properties, such as solubility, melting point, boiling point, and density are independent of the amount of substance being examined. These properties are known as intensive properties and are used to identify a substance. The density of a substance is defined as the mass per unit volume.
Explanation:
7. Given a 32.0 g sample of methane gas (CH), determine the pressure that would be exerted on a container with
a volume of 850 cm at a temperature of 30 °C. Note: Carbon = 12.0 and Hydrogen = 1.0
Answer:
P = 58.52 atm
Explanation:
Given data:
Mass of sample = 32.0 g
Pressure of sample = ?
Volume of gas = 850 cm³
Temperature of gas = 30°C
Solution:
Number of moles of gas:
Number of moles = mass/molar mass
Number of moles = 32.0 g/ 16 g/mol
Number of moles = 2 mol
Pressure of gas:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
30+273 = 303 K
850 cm³ × 1L /1000 cm³ = 0.85 L
by putting values,
P× 0.85 L = 2 mol × 0.0821 atm.L/ mol.K × 303 K
P = 49.75 atm.L/ 0.85 L
P = 58.52 atm
Balance the following:
C₂ + B → B₂C₂
Ag₄ + SO₂ → AgO + S₂
Answer:
The balanced reactions are:
C₂ + 2B → B₂C₂
Ag₄ + 2SO₂ → 4AgO + S₂
Explanation:
The Law of Conservation of Matter postulates that "the mass is not created or destroyed, only transformed." This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. In other words, then the mass before the chemical reaction is equal to the mass after the reaction.
In other words, the law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts .
The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.
You have:
C₂ + B → B₂C₂
Left side: 2 C and 1 B.
Right side: 2 C and 2 B.
Carbon C is balanced since you have the same amount of the element on each side of the reaction, but boron B is not balanced. So, balancing the reaction:
C₂ + 2B → B₂C₂
Left side: 2 C and 2 B.
Right side: 2 C and 2 B.
Now you have the same amount of each element on each side of the reaction, so the reaction is balanced.
Now you have:
Ag₄ + SO₂ → AgO + S₂
Left side: 4 Ag, 1 S and 2 O.
Right side: 1 Ag, 2 S and 1 O.
Balancing the Ag:
Ag₄ + SO₂ → 4AgO + S₂
Left side: 4 Ag, 1 S and 2 O.
Right side: 4 Ag, 2 S and 4 O.
Balancing the O:
Ag₄ + 2SO₂ → 4AgO + S₂
Left side: 4 Ag, 2 S and 4 O.
Right side: 4 Ag, 2 S and 4 O.
You have the same amount of each element on each side of the reaction, so the reaction is balanced.
how many protons does manganese-55 have
Answer:
25
Explanation:
What happens when a covalent
substance dissolves in water?
and Why doesn’t it conduct electricity?
Answer: Covalent compounds form when atoms that have similar electronegativity values form covalent chemical bonds. When a covalent compound dissolves in water, it does not dissociate into ions. Because there are no free electrons or ions in the water (electrolytes) dissolved covalent compounds can't conduct electricity.
Explanation:
dude. g o o g l e.
What volume is occupied by 12 moles of nitrogen molecules at
standard temperature and pressure?
a 371.1 liter
B 440.8 liter
C 221.4 liter
d 268.8 liter
Answer:
V = 268.8 L
Explanation:
Given data:
Number of moles of nitrogen = 12 mol
Temperature = 273 K
Pressure = 1atm
Volume occupy = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
1 atm × V = 12 mol ×0.0821 atm.L/ mol.K × 273 K
V = 268.95 atm.L / 1 atm
V = 268.8 L
A selenide ion is isoelectronic with which noble gas?
a argon
b xenon
C radon
d krypton
Help ASAP please
Answer:
the correct answer is D which is krypton
When an atom makes a transition from a higher energy level to a lower one, a photon is released. What is the wavelength of the photon that is emitted from the atom during the transition?
Answer:
Wavelength of the photon depends on transition from different states.
Explanation:
The wavelength of the photon that is emitted from the atom during the transition depends on the transition from different states. If the photon is emitted from n=4 state to n=3 state, the wavelength of photon is 1875 while on the other hand, if the photon is emitted from n=5 state to n=3 state, the wavelength of photon is 1282. If the photon is emitted from n=3 state to n=2 state, the wavelength of photon is 656.
what is the cause of desertification
A. Farming
B. Creating reservoirs
C. Overgrazing
D. Driving motor vehicles
Answer:
C overgrazing is the answer
Answer:
yeah he got it right
Explanation:
it's C
A juggler is juggling four bean bags. When does each bean bag have the greatest potential energy with respect to the floor
Answer:
When it is at its highest point
Explanation:
It is talking about potential not kinetic
A sample of nitrous Oxide has a volume of 1 £.20 at 1500 mm HG and -10°C. Calculators pressure when it’s value is compressed 250 L and its temperature increase to 34°c
Answer:
nitric acid will be if you get you will pixel purpose
Determine the oxidation state of each of the following species.
Pb2+
Answer:
Pb oxidation number is +2
C in CH4 is -4. H is +1. 4H + 1C = 0. ; 4(+1) + C = 0 ; C = -4
O is usually -2. 3O = 3(-2) = -6. ; 2Fe =. +6 ; each Fe is +3
2Ag = +2 since O = -2 ; each Ag = +1
