Answer:
The noble gases (Argon, Neon, Xenon, Helium, Krypton, Radon)
what type of bond is between H2?
Explanation:
covalent bond enjoy your anseer
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this is the text code sir
Answer:
okay?
Explanation:
Answer:
[tex]\huge\blue{\boxed{\tt{\colorbox{black}{babyheaven}}}}[/tex]
Choose the incorrect statement from the following:
(a) The disadvantage of natural gas is that it can not be used directly for burning in homes.
(b) Natural gas is stored under high pressure as compressed natural gas.
(c) Natural gas cannot be used for power generation.
(d) It is difficult to transport natural gas through pipes.
Answer:
d
Explanation:
Generally, it is transported through pipes so I think statement d is incorrect.
When reactants are not used to make new substances, are they destroyed?
In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
The pathogen below is a single-celled organism without a nucleus that can cause illness in a humans.
Answer:
bacteria
Explanation:
The pathogen below is a single-celled organism without a nucleus that can cause illness in a humans.
When electricity runs through an electric stove, what other type of energy is produced?
A.
heat energy
B.
sound energy
C.
chemical energy
D.
mechanical energy
What change will occur if liquid gallium is removed from a hand
Answer:
Gallium's melting point is low enough that it can be melted in the human hand and then refrozen if the hand is removed. The liquid metal has a significant propensity to supercool below its melting/freezing points when exposed to high temperatures.
Explanation:
Hope it helps:)
In the image above, the region labeled “ A “ is called the . . .
White matter
Dorsal Horn
Central Canal
Ventral Root
Answer:
Ans B)=====> Dorsal Horn
Two arms, each known as a Dorsal Horn, are formed by the core grey matter at the back of the spinal cord. In the image, the region labeled “ A “ is called the Dorsal Horn. Therefore, option B is correct.
What is dorsal horn ?One of the gray longitudinal columns discovered inside the spinal cord is the dorsal horn. Through the dorsal roots of the spinal nerves, it predominantly serves as the end of primary afferent fibers.
A complex network of excitatory and inhibitory interneurons, as well as projection neurons, make up the dorsal horn, which serves as an intermediary processing center for this information. It transmits the processed somatosensory information from the spinal cord to the brain.
The cell bodies of sensory neurons are located in the dorsal horns. The ventral horns are two arms of central grey matter that are found at the front of the spinal cord.
Thus, option B is correct.
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will give 80 points: Use the word bank to fill in the rock cycle steps in the diagram below. You many only use each word 1 time. 2 of the words will not be used at all
Word Bank:
Erosion, Heat and Pressure, Crust, Metamorphic Rock, Magma, Sedimentary Rock, Igneous Rock, Compaction, Melting, Earth
Filling the rock cycle steps with the world Bank is as follows;
1 = Erosion1 = Erosion2 = Compaction1 = Erosion2 = Compaction3 = Sedimentary rock1 = Erosion2 = Compaction3 = Sedimentary rock4 = Heat and Pressure1 = Erosion2 = Compaction3 = Sedimentary rock4 = Heat and Pressure5 = Metamorphic rock1 = Erosion2 = Compaction3 = Sedimentary rock4 = Heat and Pressure5 = Metamorphic rock6 = Melting1 = Erosion2 = Compaction3 = Sedimentary rock4 = Heat and Pressure5 = Metamorphic rock6 = Melting7 = Magma1 = Erosion2 = Compaction3 = Sedimentary rock4 = Heat and Pressure5 = Metamorphic rock6 = Melting7 = Magma8 = Igneous rock.Additionally, the conversion of igneous, Sedimentary and metamorphous rock to sediments happens by a process termed Erosion/Weathering.
Also, conversion of magma to igneous rock is by cooling and vice versa is by heating.
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Which of the following shows a valid combustion reaction?
Answer:
May be third one because of the formation of H2(hydrogen)on the product side.
The equation that shows the valued combustion reaction is [tex]C_2H_4 + 3O_2 \rightarrow 2CO_2 + 2H_2O[/tex]
The following information should be considered:
For [tex]2Al + 2O_2 \rightarrow 2AlO + O_2[/tex] it should not Balanced Properly [tex]2Al + O_2 = 2AlO[/tex] For [tex]2CH_4 + O_2 \rightarrow 2CO + 4H_2[/tex] as CO should be [tex]CO_2[/tex] For [tex]Ca + O_2 \rightarrow CaOH[/tex] it should Not Balanced and No source for the H.Learn more: brainly.com/question/16911495
please help me with this question as it's really important
Answer:
(i)
A → CH3CH2CH3 ( Propane )
B → CH3CH(Cl)CH3 ( 2-Chloropropane )
C → No product
D→ CH3CH=CH2 ( 2-propene )
E → CH3CH2COOH ( Propanoic acid )
(ii)
Reagent X → Acidified water [ H+ / H2O ]
Reagent Y → Bromine with Carbon tetrachloride [ Br2 / CCl4 ]
Reagent Z → Sodium hydroxide [NaOH]
A 13. 00 g sample of citric acid reacts with an excess of baking soda as shown in the equation. Upper H Subscript 3 Baseline Upper C Subscript 8 Baseline Upper H Subscript 5 Baseline Upper O Subscript 7 Baseline 3 Upper N a Upper H Upper C Upper O Subscript 3 Baseline right arrow 3 Upper C Upper O Subscript 2 Baseline 3 Upper H Subscript 2 Baseline Upper O Upper N a Subscript 3 Baseline Upper C Subscript 8 Baseline Upper H Subscript 5 Baseline Upper O Subscript 7. What is the theoretical yield of carbon dioxide? 0. 993 g 2. 98 g 3. 65 g 8. 93 g.
Answer:
The answer is C.
Explanation:
i got a 100 on the test
The theoretical yield of carbon dioxide, CO₂ obtained from the reaction is 8.93 g
We'll begin by calculating the mass of citric acid, H₃C₆H₅O₇ that reacted and the mass of carbon dioxide, CO₂ produced from the balanced equation.
H₃C₆H₅O₇ + 3NaHCO₃ —> 3CO₂ + 3H₂O + Na₃C₆H₅O₇
Molar mass of H₃C₆H₅O₇ = (3×1) + (12×6) + (5×1) + (7×16) = 192 g/mol
Mass of H₃C₆H₅O₇ from the balanced equation = 1 × 192 = 192 g
Molar mass of CO₂ = 12 + (2 × 16) = 44 g/mol
Mass of CO₂ from the balanced equation = 3 × 44 = 132 g
From the balanced equation above,
192 g of H₃C₆H₅O₇ reacted to produce 132 g of CO₂
Finally, we shall determine the theoretical yield of CO₂. This can be obtained as follow:
From the balanced equation above,
192 g of H₃C₆H₅O₇ reacted to produce 132 g of CO₂.
Therefore,
13 g of H₃C₆H₅O₇ will react to produce = (13 × 132) / 192 = 8.93 g of CO₂.
Thus, the theoretical yield of CO₂ is 8.93 g
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The difference between Physical/Chemical properties and Physical/Chemical changes
Physical changes can be reversed and chemical changes can’t be reversed. A physical property is a characteristic which can be identified without changing the substance but to identify a chemical property, you do have to change the substance.
define pure substance
Segments of DNA found in chromosomes are called ——— ?
Answer:
Physically, a gene is a segment (or segments) of a chromosome. Functionally, a gene can play many different roles within a cell.
Explanation:
Excited hydrogen atoms emit light in the ultraviolet at 2.47x1015Hz. What is the
energy of a single photon with this frequency?
The energy of a single photon of this frequency is 1.638 × 10⁻¹⁸ J
Using Planck's equation, the energy of the photon E = hf where h = Planck's constant = 6.63 × 10⁻³⁴ Js and f = frequency of ultraviolet light = 2.47 × 10⁻¹⁵ Hz.
Substituting the values of the variables into the equation, we have
E = hf
E = 6.63 × 10⁻³⁴ Js × 2.47 × 10¹⁵ Hz.
E = 16.3761 × 10⁻¹⁹ J
E = 1.63761 × 10⁻¹⁸ J
E ≅ 1.638 × 10⁻¹⁸ J
So, the energy of a single photon of this frequency is 1.638 × 10⁻¹⁸ J
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why are there no elementary substances that have the ionic bond?
This problem is asking for the reason behind the nonexistence of elementary substances with ionic bonds. First of all, it is necessary to bear to mind that the definition of the type of bond in a compound depends on the difference electronegativity that is present between two of the atoms composing it.
For instance, in binary salts, such as KCl, NaCl, KBr and so on, we are able to know these are all ionic because they are composed by a metal and a nonmetal, which have the smallest and largest electronegativities, so that the difference electronegativity is large enough to produce an ionic bond.
In contrast, elementary susbtances, such as liquid bromine (Br2) and gases such as H2, N2, Cl2, F2 and O2, since they are all nonmetals and the same type, the electronegativity difference will be 0 and therefore, they will not be ionic but covalent.
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https://brainly.com/question/15105831https://brainly.com/question/14509196How do catalysts generally affect chemical reactions? A They increase the temperature of the system. B They increase the surface area of the reactants. C They increase the activation energy by introducing enzymes. D They lower the activation energy by providing an alternate pathway.
Answer:
D
Explanation:
A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy without itself being consumed by the reaction.
Activation energy is the minimum amount of energy required for a chemical reaction to proceed in the forward direction.
A catalyst increases the reaction rate by providing an alternative pathway or mechanism for the reaction
what are valence electrons? why are they so important in chemistry?
Answer:
Valence electrons are negatively charged particles located in the outermost shell of atoms that can be transferred or shared with other atoms. Valence electrons are important in chemistry because the number of valence electrons in a particular atom can be used to determine how the atom will react chemically with other atoms.
In your own words, what is the conservation of mass?
Answer:
In chemistry, the law of conservation of mass states that the mass of the products (the chemical substances created by a chemical reaction) will always equal the mass of the reactants (the substances that make the chemical reaction). Think of it as being similar to balancing an algebraic equation.
Explanation:
(winks and runs off)
Answer:
Mass cannot be created or destroyed.
Explanation:
Conservation of mass is "a principle stating that mass cannot be created or destroyed" (Oxford Languages).
Have a nice day! (there is not much rewording/etc you can do here as it is a simple principle, but I hope this will still help!)
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
An element has 3 electrons, 3 protons and 4 neutrons. What will be its atomic number and mass number? (
Answer:
its atomic number will be 3 and it's mass number will be 7. it is lithium
How many molecules are in 0.79 moles of NH4?
Answer:
14
Explanation:
what happens to the 1s orbitals on the hydrogen atoms as they approach to make a covalent bond?
i dont know im only doing for points
Answer: They begin to overlap
Which over lappings are present in carbon(iv)oxide molecule
Answer:
the double carbon to oxygen bond
A chemist has dissolved a certain substance in water. The chemist knows that more of the substance could be dissolved into the water before it stops dissolving. Therefore, the current solution is
.
Answer is: the current solution is unsaturated.
Unsaturated solution means that more of a substance can be dissolve.
For example:
Solubility of potassium chlorate (KClO₃) at 100 grams of water at 80°C is 37.5 g, that means that all 37.5 g is completely dissolves, this is the saturated solution.
If we add 20 grams of potassium chlorate in 100 grams of water, there is less solute than the saturated solution, so this is unsaturated solution.
How do I convert 50 years into seconds. Express your answer in scientific notation?
Answer: 15768 seconds
Explanation: (50 years) x (365 da/yr) x (86,400 sec/da)
= (50 x 365 x 86,400) seconds
= 1.5768 x 10⁹ seconds
Atoms: SC.8.P.8.7
Match the definition to proper definition:
Term:
Definition:
1. Atoms
A.Positive subatomic particles found in the
nucleus of the atom
2. Neutron
B. Negative subatomic particle found in the cloud
3. Proton
C. Substance that has no electrical charge
4. Nucleus
D. Basic building block of all matter
5. Electron cloud
E. Substance that consists of only one type of ato,
6. Electrons
F. Center of an atom with a positive charge
G. Outside of the atom with a negative charge
7. Element
Answer:
1 = D
2 = C
3 = A
4 = F
5 = G
6 = B
7 = E
HURRY
What type of reaction is this? 2H2 + O2=>2H 20 + Energy
A. Exothermic reaction
B. Endothermic reaction
C. Chemical reaction
D. Nuclear reaction
Answer: Both A and C
Explanation:
It is a combustion reaction that is exothermic. It is a chemical reaction. Choices A and C are both correct, so I'm not certain what criteria are most important in answering.
What type of rays result in shorter days? (science)
Answer:
verical rays
Explanation:
The rays result in shorter days are the vertical rays.
What are vertical rays ?Vertical rays are another name for direct rays. Rays that are straight overhead are referred to as vertical. Because the Earth is spherical, not all the Sun's rays hit it directly or vertically.
Vertical rays lose less heat because they cover a shorter distance. Slanted rays cover more ground and dissipate more heat. Sun's vertical rays fall between the Tropics of Cancer and Capricorn, along its migratory belt.
The length of a day is determined by the Earth's rotation around its axis, which has been accelerating during the past several decades. Our days have been becoming shorter due to this tendency.
Thus, vertical rays are responsible for shorter days.
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What type of flower structures do you see in a ovary in a flower
Answer:
The ovary contains ovules
Explanation: