Answers
Answer:
13.75
Explanation:
gets halved every 8 days so halved twice
Related Questions
Infer what the term “biogeochemical cycles” means. How do you think the term relates to a food chain?
Answers
Answer: Biogeochemical cycles are usually described with box models.
Explanation: Matter flows through trophic levels and elements are recycled among ecosystems using biogeochemical cycles. As nutrients move through ecosystems, the compounds they form are usually transformed.
what is extremely lightweight and exists in a cloud orbiting the nucleus
Answers
Answer:
atomic particles
Explanation:
electrons are extremely lightweight and exist in a cloud orbiting the nucleus period the electron cloud has a radius 10,000 times greater than the nucleus according to the Los Alamos national laboratory.
write the addition reaction of butane and bromine
Answers
How many moles of NaOH are in a 75.89g sample? (mass= 40.01 g) (Show your work)
Answers
Answer:
1.896 moles of NaOH-----> 1.90 moles
Explanation:
Written- out Method:75.89 g of NaOH | 1 mole of NaOH
| 40.01 g NaOH = 1.896 -----> 1.90 moles of NaOH
Plug into calculator method:(75.89 g NaOH/ 40.01 g NaOH = 1.896 -----> 1.90 moles of NaOH
The Periodic Table of elements is arranged by:
O atomic mass
O number of neutrons
O number of electrons
O atomic number
Answers
Option D, atomic number is the correct answer
Answer:
D. Atomic Number
Explanation:
All of the elements in the periodic table are arranged according to their atomic number.
PLEASE HELP I'LL GIVE U BRAINLIEST
Answers
Answer:
files
Explanation:
i had to answer the same question
Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a
compound.
impure substance.
mixture.
pure substance.
Answers
Answer:
D. pure substance.
Explanation:
Answer:
:D
Explanation:
What is the main point of mutation ?
quick please !!
Answers
Answer: type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term point mutation also includes insertions or deletions of a single base pair.
Explanation:
Answer:
Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.
Explanation:
Mutations put new DNA combinations into a population
3
1 point
1
Select ALL of the true statements
An atom of a given element will still be that element if the number of protons changes
Atoms are mostly made of empty space
An atom of a given element will still be that element if the number of electrons changes
OOGOOO
An atom of a given element will still be that element if the number of neutrons changes
Electrons have a negligible mass compared to the rest of the atom
The atoms mass comes mostly from the neutrons
Previous
Answers
Answer:
Not 100% sure but...
Explanation:
I know that the second, third and fifth one are correct, not sure if there are any more.
if the gas has a volume of 20 L at a temperature of 25 Celsius what is the volume of the gas when it is heated to 100°C if the pressure remains constant
Answers
Answer:
i have no idea
Explanation:
lol
Answer:
this has to do with gas law
Explanation:
Charles law
v1=20
T1=25
V2=?
T2=100
hence V1/T1=V2/T2
V2=V1*T2/T1
V2=20*25/100
V2=5
For the n = 3 electron shell, which of the following quantum numbers are valid? Check all that apply.
Answers
Answer:
The valid quantum numbers are l=0, l=-2 and l= 2.
Explanation:
Given that,
n = 3 electron shell
Suppose, the valid quantum numbers are
l = 3
m = 3
l = 0
m = –2
l = –1
m = 2
We know that,
The value of n = 3
Principle quantum number :
Then the principal quantum number is 3. Which is shows the M shell.
So, n = 3
Azimuthal quantum number :
The azimuthal quantum number is l.
[tex]l=0,1,2[/tex]
Magnetic quantum number :
The magnetic quantum number is
[tex]m=-2,-1,0,1,2[/tex]
Hence, The valid quantum numbers are l=0, l=-2 and l= 2.
Answer: I = 0 m = -2 m = 2
Explanation: Edge.
the correct answers to the second part of this are:
n = 1, I = 0, m = 0
n = 3, I = 0, m = 0
n = 5, I = 4, m = -3
Explain the difference between terms "bonded" and "attracted'
Answers
bonded means that the two have come together and are attached together, wheras attracted means that the two like to come close to each other but are not put together
¿Qué podría pasar si la fuerza fuerte no existiera?
Answers
Answer:
andariamos flotando
Explanation:
HELP ASAP WILL MARK BRAINLIST The diagram below shows what happens during the formation of a compound. The diagram shows two substances joining together to form a third substance.
Which of these substances is a compound?
Group of answer choices
C
A
B
Both B and C
Answers
Answer:
C is the answer..
The equation is showing how it is formed, so the answer is on the other side of the equal sign.
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, diagram C shows the final compound.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
The diagram below shows what happens during the formation of a compound. The diagram shows two substances joining together to form a third substance. Diagram C shows the final compound.
Therefore, diagram C shows the final compound.
To learn more about chemical compound, here:
brainly.com/question/26487468
#SPJ2
You will analyze four substances in this lab. Based on their chemical formulas and what you already know about covalent and ionic compounds, make a prediction for each compound.Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen
Answers
Answer:
Oil: covalent
Cornstarch: Covalent
Sodium chloride: Ionic
Sodium bicarbonate: Ionic
Explanation:
Covalent compounds are formed by sharing of electrons between non metals whereas ionic compounds are formed by transfer of electrons from metals to non metals.
1. Oil, which is built from the nonmetals hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.
2. Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.
3. Sodium chloride (table salt), whose formula is NaCl is formed by transfer of electrons from sodium to chlorine.Ionic compounds are soluble in water.
4. Sodium bicarbonate, whose formula is is formed by transfer of electrons from sodium to .Ionic compounds are soluble in water.
Answer:
Oil, which is built from the nonmetals hydrogen, carbon, and oxygen:
covalent
Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen:
covalent
Sodium chloride (table salt), whose formula is NaCl:
ionic
Sodium bicarbonate (sodium bicarbonate), whose formula is NaHCO3:
ionic
Explanation:
When you mix copper and tin, you make bronze. No chemical reaction occurs.
What is bronze?
O A. An element
B. A compound
O C. An alloy
O D. A molecule
SUBMIT
Answers
Answer:
C. Alloy
Explanation:
Bronze is an alloy because the creations of alloys are not chemical reactions. An alloy is made when a metal is combined with another metal or a nonmetal.
Which is a dominant trait that Mendel observed in pea plant
A. Bumpy pods
B. Short height
C. Yellow seeds
D. White flowers
it is not A
Answers
Answer:
C, yellow seeds
Explanation:
In Mandel's studies, he proved that yellow seeds were to be dominant and green seeds were to be recessive.
Answer:
c. yellow seeds
Explanation:
i toke the test
What unit do we measure force in?
Answers
Answer: Newton
Explanation:
The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
A man weight 235.0 Ib Express his weight in kg.
How do you find it?
Answers
Answer:
The answer is 106.59 and 1 lb = 0.45359237 kg.
Explanation:
The electronic structure of the atom X is : 2, 8, 1
A. In which group atom x is found:—————-
B. In which period atom x is found:—————
C. What is the name of atom x:———————-
Answers
Answer:
A. grou(I)
B. 3rd period
C. Sodium (Na)
Explanation:
it belongs to group (I) since it has one valence electron
it belongs to 3rd period since it has three energy levels
6. What is NOT an example of a solution?
a. Acetic acid and water
b, soil and water
b. Sugar and water
c. iron and carbon
Answers
Liquids will boil at a higher temperature when they are at a lower elevation true or false ?
Answers
Answer: True
as distance from nucleus increases , energy of shells decreases, correct the wrong statement
Answers
as distance from nucleus increases , energy of shells also increases
Compare and Contrast Heating and
Cooling curves.
Answers
Answer: Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down. Just like heating curves, cooling curves have horizontal flat parts where the state changes from gas to liquid, or from liquid to solid.
Explanation: Have a blessed day hopefully this helped!
Can somebody please help me with this ASAP!
Answers
which of the following affects self esteem? O home, school, community and cultural environments O social interactions with family friends and others O media, tv, social networking sites all the above
Answers
Answer:
All the above
Explanation:
Explain what happens if you change the number of protons in an element?
Plzzz helpppp!!!
Answers
Answer:
When you change the number of protons in an atom, you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive. If you change the number of electrons in an atom, you will get an ion of the element.
PLEASE ANSWER
A train travels at an average speed of 25 miles per hour. How long does it take the train to travel 2000 miles
Answers
Answer:
80 hours. 2,000 ÷ 25 = 80
Use “impact force” in a sentence.
Answers
Answer:
The impact force of a car hitting a building can traumatize someones body.
Explanation:
why does the uncertainty principle exist ?
Answers
Answer:
The uncertainty principle, proposed in 1927 by German physicist Werner Heisenberg, states that the more precisely a particle's position is measured, the less precisely its momentum can be known, and vice versa. ... They wanted to measure the polarization, or orientation, of the photon.