Answer:
It is true! Have a great day/night :). & make sure you drink water and eat!
Explanation:
Write the chemical symbol for the ion
with 33 protons and 36 electrons
Now here is 36 electrons so it's. tri cation.
Symbol
[tex]\\ \tt\hookrightarrow As^{3+}[/tex]
The chemical symbol for an ion with 33 protons and 36 electrons is As³⁺.
As is the chemical symbol for the element arsenic, which has 33 protons in its nucleus since the number of protons determines the identity of the element.The number of electrons in an atom is equal to the number of protons in a neutral atom, but in this case, the atom has 36 electrons, which means it is negatively charged.
In order to become a positively charged ion, the atom must lose electrons equal to the charge magnitude. In this case, the atom loses three electrons, giving it a charge of +3, making it an ion with 33 protons and 36-3=33 electrons.
Thus,the chemical symbol for the ion with 33 protons and 36 electrons is written as As³⁺.
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What are two types of energy?
Kinetic
Transformational
Potential
Random
Translating
Answer:
Many forms of energy exist, but they all fall into two basic categories:Potential energy.Kinetic energy.
Which element is the most reactive?sodiumnickelcarbonoxygen.
Answer:
The answer is sodium which is the element is the most reactive.
Describe an element and a compound. Compare and contrast their similarities and differences. Identify how elements are related to compounds. Be sure to include the following key vocabulary terms: Pure substance, chemical symbol, chemical formula.
Answer:
» Similarities :
☑ They both react by chemical means, to produce either an element or compound as the end product of the chemical reaction.
• Take an example of Magnesium reacting with cold water:
[tex]{ \rm{Mg_{(s)} + 2H _{2} O _{(l)} → Mg(OH)_{2(aq)} + H_{2(g)}}}[/tex]
• If it reacts with steam:
[tex]{ \rm{Mg _{(s)} + H _{2} O_{(l)} → MgO_{(s)} + H_{2(g)}
}}[/tex]
• [ Element: Magnesium and Compound: Water ]
They are both classified under atomic substances cause they are made up of microscopic molecules known as atoms.
☑ They are both formed up by microscopic substances known as atoms.
» Differences :
☑ Compounds generally have higher molecular masses than elements.
☑ Compounds are formed through bonding by elements while elements can naturally exist or formed by extraction, purification and concentration
Trevor dissolves sodium hydroxide pellets in a beaker of water at room temperature, and notes that the beaker becomes warm. Which correctly designates the signs of Delta. H, Delta. S, and Delta. G for this process? Delta. H > 0, Delta. S > 0, and Delta. G < 0 Delta. H < 0, Delta. S > 0, and Delta. G < 0 Delta. H > 0, Delta. S > 0, and Delta. G > 0 Delta. H < 0, Delta. S < 0, and Delta. G > 0.
The change in energy for the reaction is [tex]\Delta H[/tex] < 0, [tex]\Delta S[/tex] > 0, and [tex]\Delta G[/tex] < 0. Hence, option B is correct.
The chemical reaction with the loss of energy is exothermic reactions, and the reaction with the gain of energy is an endothermic reaction.
The change in enthalpy for the reaction is given by [tex]\Delta H[/tex], the change in entropy is given by [tex]\Delta S[/tex], and the change in free energy is given by [tex]\Delta G[/tex].
What is the energy change in the exothermic reaction?The energy in the NaOH dissolution is released, which turns the solution warm.
The release of the energy by the sample in dissolution makes the value [tex]\Delta H[/tex] negative.Thus, [tex]\Delta H[/tex] is < 0 for the reaction.
The release of the energy results in increased disorder in the reaction mixture. The value [tex]\Delta S[/tex] becomes positive.Thus, the [tex]\Delta S[/tex] is > 0 for the reaction.
The reaction for the exothermic process is spontaneous. Thus, the value [tex]\Delta G[/tex] is negative for the reaction.Thus, the [tex]\Delta G[/tex] < 0.
Hence. the change in energy for the reaction is [tex]\Delta H[/tex] < 0, [tex]\Delta S[/tex] > 0, and [tex]\Delta G[/tex] < 0. Hence, option B is correct.
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9. A student wished to prepare ethylene gas by dehydration of ethanol at 140oC using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give ethylene
We have that the the liquid is
C_2H_5OH (ethanolAnd at a condition of H_2SO4 as catalyst and temp 170From the question we are told
A student wished to prepare ethylene gas by dehydration of ethanol at 140oC using sulfuric acid as the dehydrating agent.A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give ethyleneEthylene formationGenerally the equation is
2C_2H_5OH------CH3CH_2O-CH_2CH_3+H_20
Therefore
with ethanol at 140oC
The product is diethyl ethen
The reaction at 170 ethylene will give
C_2H_5OH-------CH_2=CH_2+H_2O( at a condition of H_2SO4 as catalyst and temp 170)
Therefore
The the liquid is
C_2H_5OH (ethanolFor more information on Ethylene visit
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How much energy is released when 42. 5 g of water freezes?.
Answer:
The energy released by freezing 42.5 g of water is 14.2 kJ.
Explanation:
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Since gasses weigh nothing when they are produced in a reaction they do not have to be accounted for.
Answer:
No
Explanation:
You can not have a reaction that produces "no mass". This breaks the law of conservation of mass. When gasses are produced, they will have a specific amount of mass associated with them which means they will have a weight. They will have to be accounted for
The boiling point of a liquid is the temperature at which the vapor pressure of the liquid is equal.
Answer:
100° C (212° F).
Explanation:
All matter is made of particles that are in constant motion, True or False?
Answer:
When the particles collide, they hit each other, and hence, they move here and there. Thus liquid molecules are in constant motion. Hence, the given statement is true.
Explanation:
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1. Which of the following happens when an ionic bond is formed?(1 point)
Two atoms share an electron.
Two atoms attain equal electronegativities.
One atom becomes more electronegative than another atom.
One atom pulls an electron from another atom.
2. Which statement about bonding is correct?(1 point)
Forming bonds requires energy and is endothermic.
Breaking bonds releases energy and is endothermic.
Forming bonds releases energy and is exothermic.
Breaking bonds requires energy and is exothermic.
3. Fluorine is the most electronegative element on the periodic table, which means that, in an ionic bond, fluorine will always (1 point)
share electrons unequally with other elements.
share electrons equally with other elements.
pull electrons away from other elements.
give electrons away to other elements.
4. The bond energy between carbon and oxygen is 358 for a single bond (C–O) and 745 for a double bond (C=O). Why is the bond energy higher for double-bonded carbon and oxygen (C=O)?(1 point)
Additional bonds require less energy to break, so the bond energy is higher.
Additional bonds require more energy to break, so the bond energy is higher.
Additional electrons attract each other, decreasing the distance between atoms, and increasing bond energy.
Additional electrons repel each other, increasing the distance between atoms, and increasing bond energy.
5. Use the bond energies to answer the question.
H–H = 432
H–O = 467
O–O = 146
O=O = 495
H2 (H–H) combines with O2 (O=O) to become hydrogen peroxide (H2O2) bonded as such: H–O–O–H. Which option shows the difference in total bond energy between the reactants and the products?
(1 point)
−927
1,080
153
−153
Answer:
1. One atom pulls an electron from another atom.
2. Forming bonds releases energy and is exothermic.
3.pull electrons away from other elements.
4. Additional bonds require more energy to break, so the bond energy is higher.
5. −153
Explanation:
I just took it amor :) beijos good luck !
Answer:
1. One atom pulls an electron from another atom.
2. Forming bonds releases energy and is exothermic.
3. pull electrons away from other elements.
4. Additional bonds require more energy to break, so the bond energy is higher.
5. −153
Explanation:
i did the quick check i got 100%
ASPA!!!! How could a scientist determine what elements are present in a distant star by looking at its absorption spectrum?
Answer:
Spectroscopy
Explanation:
They can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy
Why is Fluorine more electronegative than Iodine?
PLEASE HELP!!
Answer:
Fluorine has smaller size than iodine, has more tendency to attract shared pair of electron towards itself
7. True or False. Camouflage is a physical adaptation.
8. True or False. Coloring is the only physical adaptation an animal can have.
9. What adaptations do amphibians have? _________________ and ________________
10. Natural selection is the process for passing important _______________ for survival to
______________________ to come.
11. Adaptations like migration are called ___________________ ____________________.
12. Inherited behaviors are ________________, actions, or things organisms do to maximize
How does volcanic activity affect climate? Gas and ash filter out solar radiation, causing the temperature to. Water vapor and carbon dioxide are released into the atmosphere, causing the climate to get.
Answer:
Volcanoes can have very serious effects on the environment around them when they erupt. Buildings are destroyed and people are made homeless. People are killed. Clouds of ash cover plants making them inedible. Dust causes pneumonia and illnesses to the survivors. Dark skies, severe winds and heavy rains may follow an eruption for months afterwards.
Explanation:
Gases and solids injected into the stratosphere circled the globe for three weeks. Volcanic eruptions of this magnitude can impact global climate, reducing the amount of solar radiation reaching the Earth's surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.
AnswerAnswerAnswermeAnswer:
The Answer would be First Decrease then warmer.
Explanation:
It is right trust me
how did old yellow die
What happens to most of the Energy that an organism gets from consuming food?
Help please
Answer:
When energy enters a trophic level, some of it is stored as biomass (as part of organisms' bodies). This is the energy that's available to the next trophic level, since only energy stored as biomass can get eaten.Explanation:
The force acting between two charged particles A and B is 5.2 × 10-5 newtons. Charges A and B are 2.4 × 10-2 meters apart. If the charge on particle A is 7.2 × 10-8 coulombs, what is the charge of particle B?
(k = 9.0 × 109 newton·meters2/coulomb2)
A.
2.4 × 10-2 coulombs
B.
4.6 × 10-11 coulombs
C.
5.2 × 10-11 coulombs
D.
7.2 × 10-8 coulombs
can someone please help me hurry
Answer:
The answer to the question is 148.3 g
Explanation:
To find moles, you want to get rid of the grams by finding molar mass. Then, you have to get rid of grams using cross multiplication. This is why 148.3 grams is on the bottom; it will get rid of the grams on the original amount leaving you moles.
What is added to make solid ice change to liquid water and then to gaseous steam?.
During combustion reaction of propane (C3H8) the amount of CO2 gas was 10 grams. Calculate the mass of burnt propane, oxygen and water from the reaction? Write and balance the equation.
Pls write with explanation)))
Identify the double displacement reaction. 3Pb 2h 3PO 4 ⟶ 3H 2 Pb 3(PO 4) 2 2NO 2 ⟶ 2O 2 N 2 2NaBr Ca(OH) 2 ⟶ CaBr 2 2NaOH 2NH 3 H 2SO 4 ⟶ (NH 4) 2SO 4.
Reaction 3 is the double displacement reaction.
Double displacement reaction occurs when the negatively and the positively charged ions of the compounds interchange their position when the new compound in the product is formed.
Which is a double displacement reaction?In the first reaction, the element lead (Pb) is not an ion and no exchange of the cations or the anions occurs hence it is not a double displacement reaction.
In the second reaction, one compound is getting split into two new compounds and is a decomposition reaction.
In the third reaction, [tex]\rm Br^{-}[/tex] in [tex]\rm 2NaBr[/tex] and [tex]\rm (OH)_{2}[/tex] in [tex]\rm Ca(OH)_{2}[/tex] are anions and cations and exchanges their places to produce two new compounds [tex]\rm CaBr_{2} + 2NaOH.[/tex]
In the fourth reaction, a single compound is generated as the result of the combination reaction and hence, it is not the double displacement reaction.
Therefore, [tex]\rm 2NaBr + Ca(OH)_{2} \rightarrow CaBr_{2} + 2NaOH[/tex] is the double displacement reaction.
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which of the following best describe the chronological way of specimen preparation?
Plss, Help me
( Non - sense Reported )
( NICE Answer Brainliest )
Have a good night guys
Answer:
There are many reasons to examine human cells and tissues under the microscope. Medical and biological research is underpinned by knowledge of the normal structure and function of cells and tissues and the organs and structures that they make up. In the normal healthy state, the cells and other tissue elements are arranged in regular, recognizable patterns. Changes induced by a wide range of chemical and physical influences are reflected by alterations in the structure at a microscopic level, and many diseases are characterized by typical structural and chemical abnormalities that differ from the normal state. Identifying these changes and linking them to particular diseases is the basis of histopathology and cytopathology, important specializations of modern medicine. Microscopy plays an important part in haematology (the study of blood), microbiology (the study of microorganisms including parasites and viruses), and more broadly in the areas of biology, zoology, and botany. In all these disciplines, specimens are examined under a microscope.
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Answer:
See the attachment...!!!
8. What is the complete equation for chlorine gas + sodium metal → sodium chloride
is gravity a matter??
Answer:
No, gravity isn't matter
Explanation:
Gravity is a force that attracts matter towards the center of a physical body with mass.
N2+3 H2 —-> 2 NH3
Which answer choice
Answer:
C
Explanation:
Examine at least three different batteries at home or at a store, each with a different voltage. Make
a chart showing the type of battery (alkaline, NiCd, etc), the voltage, the size, and the use for which each
battery is designed. Why do you think they are different in size and voltage?Examine two items that use more than one battery, such as a flashlight, a 2-way radio, or a battery
operated toy. Look at the arrangement of the batteries in the item. Are they connected in series? For
each item, state the number and type of batteries, the voltage of each battery and the total voltage
produced.
A battery converts chemical energy to electrical energy.
What is a battery?A battery is a device in which chemical energy is converted to electrical energy. The size of a battery does not necessarily correspond to its voltage.
The images were not shown but a head to head battery connection is said to be in series while a connection of batteries to a common junction is said to be in parallel.
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Answer:
This is the answer to the first one.
Explanation:
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Answer:
B. A mouse that inherited a strong sense of smell from its parents
D. A mouse with black fur that was passed down through a gene
Explanation:
Answer:
B: A mouse that inherited a strong sense of smell from its parents
D: A mouse with black fur that passed down through a gene
Explanation:
In the article, it's stating that natural selection affects variations that are inherited, not acquired. Inherited means that that it's passed from parents to offspring through genetics. Acquired traits are "acquired" during an organism's life and develop.
Options B and D are correct because a strong sense of smell from its parents and genetically passed black fur are inherited traits. Only inherited traits can be affected by natural selection.
. Which of the following statements about noble gases is NOT true?
a. They are colorless and odorless at room temperature.
b. They have a complete set of electrons in their outer energy level.
c. They normally react with other elements.
d. All of them are found in Earth's atmosphere in small amounts.
Answer:
d, All of them are found in Earth's atmosphere in small amounts
describing chemical reactions that occur in the kitchen.(6 reaction at least )
Answer:
please read the answer above
