Answers
this is lithium ion with a +1 charge
Related Questions
after eating an apple and levaing it on top of the table. what will happend to the color of the inner part of the apple? what makes the color of the apple change
Answers
Answer:
Answer Below
Explanation:
When you leave an apple on a table outside it will turn brown. This happens because when you cut an apple, you are exposing it's insides to the oxygen in the air. This causes the PPO (polyphenol oxidase) enzyme in the apple's flesh to oxidize the polyphenols, turning them into some other brown colored products. Hence, the color change.
Answer:
brown i can't explain because its a matter of the atoms in the apple mixing with the air and apple is made with nitrogen
Using the Periodic Table predict which elements will have similar chemical properties or reactivity.
Group of answer choices
rubidium, yttrium, and zirconium
nitrogen, sulfur, and bromine
magnesium, strontium, and barium
cadmium. calcium, and carbon
Answers
Answer:
magnesium. stronsium. barium. they are have similar group in IIA
Help it’s for a test!!!!!!!!!!!How many moles are in 2.16 x 1023 atoms of magnesium?
A. 35.9 moles
B. .359 moles
C. 7.18 moles
D. 0.359 moles
E. 0.90 moles
Answers
1. The ability to dissolve in water and to conduct
electricity are examples of
a. physical properties.
b. chemical changes.
c. chemical properties.
d. chemical bonding.
Answers
Answer:
Physical
Explanation:
Because thats the answer
Name this element.
i need the answer like now
Answers
A 5.0 milliliter sample of a substance has a mass of 12.5 grams. What is the mass of a 100 milliliter sample of the same substance?
Answers
Answer:
It sould be 250 grams
Explanation:
It is given that, 5 millimeter sample has the mass of 12.5 grams. Then, 100 millimeter sample have a mass of 250 g.
What is mass ?Mass of a substance is a physical quantity that describes the total amount of the substance. Mass is an extensive property since it depends on the change in amount or quantity of the substance.
The SI unit of mass is grams (g). Other units are kilograms, milligrams , pounds etc. Mass is of small substance is expressed in grams and that bigger things are usually expressed in kilograms.
Given that mass of 5 ml sample = 12.5 grams
then mass of 1 ml = 12.5/5 = 2.5 g
then mass of 100 ml = 2.5 × 100 = 250 grams.
Therefore, the mass of 100 ml of the sample is 250 g.
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which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect?
Answers
Answer:
Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Energy of electrons depends on light's frequency, not intensity. A change in which property of light will have no effect on whether or not the photoelectric effect occurs?
Explanation:
Identify the choice that best completes the statement or answers the question.
Banana slugs live on the ground in moist forests of the Pacific Northwest. They consume and
break down a variety of materials, including small dead animals and rotting leaves. Which
term describes banana slugs?
O carnivores
O consumers
O decomposers
O producers
PLEASE HELP!!!
Answers
HELP ME PLEASE WILL MARK BRAINLIEST! DUE AT 8PM TODAY1. What is the unit of measure for the graduated cylinder? What is the maximum it can measure? What is the minimum measurement?
2. Look at the smallest division on the graduated cylinder. What amount does the smallest division measure?
3.
What are the units of measure on the plastic cup? What is the maximum amount it can measure? What is the minimum measurement?
Answers
Answer:
1. Is fortnite travis scott burger
2. Beetlejuice the second
3. The measurement is 69420
Explanation:
my mom told me
5. The diagram above shows what happened when an irregular solid was immersed in water. This irregular solid has the same mass as a gold block, which is 2 cm wide by 2 cm high by 5 cm long. Using the method described in the passage, compare the density of the unknown with the density of gold.
A. Equal to gold
B. Less than gold
C. Greater than gold
D. Cannot be determined
Answers
The density of the unknown will be greater than the density of gold.
An overview will be given since the diagram isn't given. The formula to calculate the density of an irregular shape will be the mass divided by the volume.
The density is the mass per volume. From the information given, since they've the same mass, then it means that the volume of the gold will be more than the volume of the unknown. Therefore, the density of the unknown will be greater than gold.
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How many atoms of each element are in one molecule of 2-heptanone?
Answers
An object has a mass of 4 grams and a volume of 2 cm3. What is the density of the object
Answers
Answer:
The answer is 2.0 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 4 g
volume = 2 cm³
We have
[tex]density = \frac{4}{2} \\ [/tex]
We have the final answer as
2.0 g/cm³Hope this helps you
Answer:
D = 2 g/cm³
Explanation:
Density = mass over volume
D= m/v
Step 1: Define
m= 4 grams
v= 2 cm³
Step 2: Substitute and Evaluate
D= 4 g/2 cm³
D= 2 g/cm³
what is the formula for sulfuric acid
Answers
Answer:
H₂SO₄
Explanation:
Hope this helps!
Air is a mixture of different gases like nitrogen and oxygen. Carbon dioxide is the most important contributor to human-caused global warming. _________________ _________________ Forest fires and cities with lots of car traffic cause air pollution.
Answers
Why Hund's Rule is called maximum spin multiplicity rule?
Answers
Answer:
The rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin multiplicity. This implies that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pair
Explanation:
how does litmus indicator work
Answers
The substance which responds to the change in the concentration of the hydronium ions in solution by changing its color is known as an indicator.
Organizing information in a meaningful way is an example of what?
Answers
Answer:
Observation
Explanation:
In chemistry a chemist conducts an experiment and he/she concludes some points and arranges information about his/her experiment can be called observation or result
Organizing information in a meaningful way is an example of good management and the proper establishment of the research parameters.
In research, the correct organization of information is of the utmost importance.Information is the key to get proper results during research.That is why researchers must be very careful in the way they handle information.Proper sources should be taken into consideration to do research.The information obtained should be correctly organized and classified, according to the framework of research. This meaningful organization is key to the following interpretation of results.We conclude that organizing information in a meaningful way is an example of the proper control and follow-up process in research to interpret data and have valid conclusions.Learn more about this topic here:
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Answer question number 4
Answers
Answer: Choice A
Explanation:
What would be the phenotypes of the offspring?
Answers
Which of the following elements has the lowest ionization energy?
A. chlorine (CI)
B. potassium (K)
C. magnesium (Mg)
D.neon (Ne)
Answers
Answer:
B. Potassium
Explanation:
Potassium
Having a widow's peak like Wentworth
Miller is dominant.
Not having a widow's peak, like Rihanna, is
recessive.
10) If Wentworth Miller is Aa, and he and Rihanna had children, what are the possible
phenotypes and genotypes of their children?
Answers
Answer:
Aa 50% Widow's peak, aa 50% no Widow's peak
Explanation:
In the crossing over the phenotypes of their children, 50% are widow's peak (aa), while 50% are not widow's peak (Aa) because the widow's peak genes only show trait when it is in recessive condition.
What is a recessive condition?An inheritance pattern known as autosomal recessive inheritance allows a genetic disease or characteristic to be transferred from parent to offspring.
When a kid receives one altered (mutated) gene from each parent, a genetic disease may result. An autosomal recessive disorder is typically not present in the parents of a kid who has it.
Describes a property that can only be observed when a genotype is homozygous, a feature that is often concealed by other inherited qualities but survives in a population of heterozygous genotypes.
The crossing between Aa X Aa
Gametes: A and a.
The cross is attached in the image below.
Therefore, the gene's dominant allele, which is expressed when its alleles are distinct, is the case when the alleles are different. The recessive allele effect is hidden by the other allele's effect.
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Name five elements of the Periodic Table and name three properties for each element listed. For example, Oxygen: polarity.
Answers
true or false there is a risk of explosion in factories handling powders such as custard powder
Answers
Answer:
True? I think so At least
Explanation:
The first chemists, philosophers like, Aristotle were from which country?
Answers
Answer:
greece
Explanation:
aristole was particularly from stagria, greece. but most early philosophers are from greece
True or false? The mass number of an atom equals the sum of the protons and
electrons.
Answers
Answer:
false, it is the number of protons and neutrons
Explanation:
at room temperature oxygen gas travels at 393.5 meters per second. How fast does oxygen travel in mile per hour ?
Answers
Answer:
Oxygen travels in 1,416,600
Explanation:
why does the moon shine
Answers
Answer:
The moon reflects light from the sun making it appear bright in the sky.
Explanation:
Answer: Its a reflection of the sun's light
Explanation: the light from the sun bounces off of the moon
Write a complete, balanced chemical equation where tin metal reacts with aqueous hydrochloric acid to produce tin(II) chloride and hydrogen gas. Include states.
From the equation, which element is oxidized, and which element is reduced?
Answers
Answer:
1. The balanced equation is given below:
Sn (s) + 2HCl (aq) –> SnCl₂ (aq) + H₂ (g)
2a. H is oxidized.
2b. Sn is reduced.
Explanation:
1. Balanced equation for the reaction between tin (Sn) metal and aqueous hydrochloric acid (HCl) to produce tin(II) chloride (SnCl₂) and hydrogen gas (H₂).
This is illustrated below:
Sn (s) + HCl (aq) –> SnCl₂ (aq) + H₂ (g)
There are 2 atoms of Cl on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HCl as shown below:
Sn (s) + 2HCl (aq) –> SnCl₂ (aq) + H₂ (g)
Now, the equation is balanced
2. Determination of the element that is oxidize and reduced.
This can be obtained as follow:
We shall determine the change in oxidation number of each element.
NOTE:
a. The oxidation number of H is always +1 except in hydrides where it is –1.
b. The oxidation state of Cl is always –1.
Sn (s) + 2HCl (aq) –> SnCl₂ (aq) + H₂ (g)
For Tin (Sn):
Sn = 0
SnCl₂ = 0
Sn + 2Cl = 0
Cl = – 1
Sn + 2(–1) = 0
Sn – 2 = 0
Collect like terms
Sn = 0 + 2
Sn = +2
Therefore, the oxidation number of Tin (Sn) changes from 0 to +2
For H:
H = +1
H₂ = 0
The oxidation number of H changes from +1 to 0
For Cl:
Cl is always –1. Therefore no change.
Summary:
Element >>Change in oxidation number
Sn >>>>>>>From 0 to +2
H >>>>>>>>From +1 to 0
Cl >>>>>>>No change
Therefore,
Sn is reduced since its oxidation number increased from 0 to +2.
H is oxidized since it oxidation number reduced from +1 to 0
The balanced chemical equation for the reaction is
Sn(s) + 2HCl(aq) → SnCl₂(aq) + H₂(g)
and the element that oxidized is tin (Sn) while the element that is reduced is hydrogen (H)
The balanced chemical equation for the reaction where tin metal reacts with aqueous hydrochloric acid to produce tin(II) chloride and hydrogen gas is
Sn(s) + 2HCl(aq) → SnCl₂(aq) + H₂(g)
From the equation,
The element that is oxidized is tin (Sn), because the oxidation state of Sn increased from 0 to +2
The element that is reduced is hydrogen (H), because the oxidation state of H decreased from +1 to 0.
Hence,
The balanced chemical equation for the reaction is
Sn(s) + 2HCl(aq) → SnCl₂(aq) + H₂(g)
and the element that oxidized is tin (Sn) while the element that is reduced is hydrogen (H).
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what are the units for the volume of a solid volume of a liquid
Answers
Answer:Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
Explanation:
Question 3 (1 point)
Which of the following elements is the most electronegative: arsenic, phosphorus,
sulfur, or selenium?
selenium
arsenic
phosphorus
sulfur
Answers
Answer:
sulfur
Explanation:
From the given lists of elements, the one with the most electronegativity is Sulfur.
Electronegativity is of an element is a property that combines the ability of its atom to lose and gain electrons.
It is a measure of the relative tendency with which the atoms of the element attract valence electrons in a chemical bond.
Using the Pauling's electronegative table of elements;
Here are electronegativity values of the given elements;
selenium 2.4
arsenic 2.0
phosphorus 2.1
sulfur 2.5
We see that the value of sulfur is the highest.