Answers
Answer:
A-5N B-6N C-7N D-8NExplanation:
i hope it helps ;)
Related Questions
how does the density of an object help scientist understand the natural world
Answers
Densities are mostly used to identify substances and to characterize and estimate the composition of many kinds of mixtures.
A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution
Answers
Answer:
Volume of solution = 5 L
Explanation:
Given data:
Molarity of solution = 0.02 M
Moles of solute = 0.1 mol
Volume of solution = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
by putting values,
0.02 M = 0.1 mol / volume of solution
Volume of solution = 0.1 mol / 0.02 M
Volume of solution = 5 L
Which of the following molecules are isomers? Please look at the picture for reference
Answers
Answer:
d
Explanation:
Isomers are molecules that have the same molecular formula(the same number of each atom), but different structural formulas
in this case both have the formula C2H5O
Write the formula for Carbon Trioxide
Answers
Answer:
Chemical Formula: Fe2O3.
Explanation:
Iron(III) oxide, ferric iron, hematite, red iron oxide, synthetic maghemite, colcothar, or simply rust—is one of the several oxide compounds of iron, and has paramagnetic properties
The formula for Carbon Trioxide is CO₃.
In Carbon Trioxide (CO₃), one carbon atom is bonded to three oxygen atoms. The subscript "3" indicates that there are three oxygen atoms in the molecule.
Carbon trioxide (CO₃) is not a stable molecule, and it does not exist as a discrete compound. The actual chemical formula for this compound does not represent a real chemical species.
Carbon trioxide was once proposed as a hypothetical compound with a triangular cyclic structure containing one carbon atom and three oxygen atoms. However, further research and experiments have shown that this structure is not viable due to the instability and high reactivity of such a compound.
Learn more about Carbon Trioxide from the link given below.
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HURRY PLEASE!!
You see different colors because white light breaks into different ____
(science 8th grade )
Answers
Answer:
you see different colors because white light breaks into its different component colors - red, orange, yellow, green, blue and Violet.
The dispersion of visible light into its different colors is known as dispersion
hope it helps you
who created The Big Bang Theory
Answers
How does removing thermal energy from liquid water affect the molecules in the water?
Answers
Answer:
For deposition to happen, thermal energy must be removed from the gas. ... As water vapor loses thermal energy, it changes into solid frost. States of Water. Water is the only substance that exists naturally as a solid, a liquid, and a gas within Earth's temperature range.
Explanation:
State the relationship between phase changes and heat energy.
In complete sentences
Answers
Answer:
heat changes energy is by the sun
the sun gives off energy
Pl help it’s for homwork
Answers
I hope this helps
yo please help. There is an image PLEASE... HELP... MEEEEE
Answers
Answer:
9. B different sounds the dog is exposed to
10. control, dependent, control, control, independent
Explanation:
Two or more different elements chemically combined
Answers
Answer:
This question lacks some parts, it should read "Two or more different elements chemically combined make up a"
The answer is a COMPOUND
Explanation:
A compound is a type of pure substance that is formed as a result of the chemical combination of two or more different elements. During this combination, the atoms of the constituent elements are chemically joined together by CHEMICAL BONDS.
An example of a compound is CaCO3, which contains the following elements: Calcium, Carbon and Oxygen. In this compound, the atoms of the above listed elements are joined together by chemical bonds to form a COMPOUND.
Useful:
Harmful:
2. Give an example of how Bacteria can be useful and harmful to man.
Answers
Answer:
normal flora useful
Explanation:
protect the skin
PLEASE HELP TIMED !!
question 1- draw a lewis dot diagram of O on a piece of paper. how many total electrons did you draw?
question 2- draw a lewis dot diagram of O on a piece of paper. how many Pairs of electrons did you draw?
question 3- draw a lewis dot diagram of Cl on a piece of paper. how many total electrons did you draw?
Answers
Answer:
See explanation
Explanation:
The Lewis dot structure is a representation of atoms in which the valence electrons on the atoms are shown as dots. Each dot represents a valence electron on the outermost shell of the atom.
Oxygen has six electrons on its outermost shell four of which are two lone pairs. Also, chlorine has seven electrons in its outermost shell. Six of these are lone pairs.
true or false
In order to calculate the relative formula mass for any compound, we sum up the products of atoms of elements multiplied by their relative atomic mass.
Answers
Answer:
TRUE
Explanation:
THE ANSWER IS TRUE
HOPE IT HELPS
What's the theoretical yield if 5.50 g.of Hydrogen react with nitrogen to from amonia? 3H2+N2=2NH3
Answers
The theoretical yield : 31.11 g
Further explanationGiven
Reaction
3H2+N2=2NH3
Required
the theoretical yield
Solution
mol of Hydrogen :mol = mass : Ar
mol = 5.5 g : 2
mol = 2.75
mol of Ammonia :From the equation, mol ratio of H₂ : NH₃ = 3 : 2, so mol NH₃ =
[tex]\tt \dfrac{2}{3}\times 2.75=1.83[/tex]
Mass Ammonia (MW=17 g/mol):mass =mol x MW
mass = 1.83 x 17
mass= 31.11 g
How many grams of water can be heated 71 °C by the absorption of 970 Joules?
Answers
Answer:
m = 3.3 g
Explanation:
Hello!
In this case, since the specific heat of water is defined as 4.184 J(g*°C), given the temperature change and the absorbed energy, we can compute the mass of water as shown below:
[tex]Q=mC\Delta T\\\\m=\frac{Q}{C\Delta T}[/tex]
Thus, we plug in the given data to obtain:
[tex]m=\frac{970J}{4.184\frac{J}{g\°C}*71\°C}\\\\m= 3.3g[/tex]
Best regards!
Which of the following elements belong to the same pair?
A. Na and CI
B. Na and Li
C. Na and Cu
D. Na and Ne
Answers
Answer:
B. Na and Li
Both are group I elements.
What is an example
Of a compound that contains a fluorine. Write the symbols for the chemical formula, and give the name.
Answers
Answer:
NaF sodium flouride
Explanation:
Identify an element on the periodic table that is chemically similar to neon(Ne).
Answers
ANSWER
Elements that are similar to neon is helium, and argon
Hope its right if not so advance sorry :)
Answer:
He
Explanation:
plato
In the photosynthetic reaction, which event normally occurs before the other three?
A) oxygen release
B) water absorption
C) PGAL synthesis
D) glucose formation
Answers
Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps? ______________
Answers
The voltage that would produce the given current is 1.98 V.
Ohm's lawThe voltage that would produce the given current can be determined by applying Ohm's law as shown below;
V = IR
where;
V is the voltage I is the currentR is the resistanceV = 100 x 0.0198
V = 1.98 V
Thus, the voltage that would produce the given current is 1.98 V.
Learn more about Ohm's law here: https://brainly.com/question/231741
How does atomic mass relate to the mole?
A: Atomic mass can be used to calculate the molar mass of a sample of a compound or element. The molar mass explains the number of particles in a single mole of the sample. Thus, the molar mass derived from the atomic masses of elements in the compound can be used to convert quantified amounts of a compound into moles.
B: Atomic mass can be used to calculate Avogadro’s number of a sample of a compound or element. Avogadro’s number explains the number of grams in a single mole of the sample. Thus, Avogadro’s number that is derived from the atomic masses of elements in the compound can be used to convert quantified masses into moles of the compound.
C: Atomic mass can be used to calculate Avogadro’s number of a sample of a compound or element. Avogadro’s number explains the number of particles in a single mole of the sample. Thus, Avogadro’s number, derived from the atomic masses of elements in the compound, can be used to convert quantified amounts of a compound into moles.
D: Atomic mass can be used to calculate the molar mass of a sample of a compound or element. The molar mass explains the number of grams in a single mole of the sample. Thus, the molar mass derived from the atomic masses of elements in the compound can be used to convert quantified masses into moles of the compound.
Answers
Which of the following choices about teenagers and sex is true?
a. Over half of teenagers have sexual intercourse.
b. Teenagers who have sexual intercourse are more likely to use protection.
c. Teenage sex is more likely to involve coercion.
d. All of the choices are correct.
Answers
Answer:
D
Explanation:
.........................
Hope this helpss
5. If it's winter in the northern hemisphere, what season is it in southern
hemisphere?
Answers
Answer:
summer
Explanation:
Because the opposite of winter is summer (warm, hot)
Speed of an object at one instant of time is the object's_____ speed.
Answers
Answer:
Instantaneous Speed
Explanation:
forgive me if its wrong
What is the concentration of a solution if 2.0 moles of sodium chloride is dissolved in 0.50 liter of water
Answers
4 M is the concentration of a solution if 2.0 moles of sodium chloride is dissolved in 0.50 liter of water.
What is molarity?Molarity is define as the no. of moles of solute present in per liter of solution i.e. M = n / V.
We can calculate the concentration in terms of molarity, in the question given that :
n = no. of moles of NaCl = 2 moles
V = volume of water = 0.50 L
On putting these values in the above equation, we get
M = 2 / 0.50 = 4M
Hence, 4 M is the concentration of the given solution.
To know more about molarity, visit the below link:
https://brainly.com/question/14469428
Barb has a bucket of snow with a mass of 20 kg. After the snowmelts,what will most likely be the mass of the bucket of water?
Answers
Answer:
20 kg
Explanation:
the mass wont change, so it will still be 20 kg
hope this helps :)
20kgs is the right answer/choice.
Which radioactive element is used to determine the absolute age of Holocene animal remains? why?
pleaseeeeeeee help!!!
Answers
Carbon-14 dating radioactive element is used to determine the absolute age of Holocene animal remains .
What do you mean by radioactive element ?A radioactive element is one with an unstable nucleus, which radiates alpha, beta or gamma radiation and gets converted to a stable element.
Radioactive elements are unstable isotopes that release subatomic particles or energy as they decay.
Carbon-14 dating -
Carbon 14 dating, also defined as radiocarbon dating, is a method of determining age .
It is used to determine the age of everything from bones and plant fibers, to wood and pollen.
Hence the radioactive element Carbon-14 dating is used to determine the absolute age of Holocene animal remains .
Learn more about radioactive element , here:
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What is the molecular geometry of CO2?
Answers
Answer:
Tetrahedral
And can u give me the brainlist I only need one to get a higher rank and thank u
Brenda rode a skateboard 95 meters west. It took her 20 seconds. What was
her velocity?
A. 75 m/s west
B. 18 m/s west
C. 0.21 m/s west
D. 4.75 m/s west
SUBMIT
Answers
Answer:
D. 4.75 m/s west
Explanation:
You can immediately get the answer once you know the formula for velocity.
The formula for velocity is: Velocity (V) = [tex]\frac{distance (d)}{time (t)}[/tex]The distance is 95 meters while the time is 20 seconds. All you have to do is to divide 95 meters by 20 seconds.
Let's solve:
V = [tex]\frac{d}{t}[/tex]V = [tex]\frac{95 meters}{20 seconds}[/tex]V = 4.75 meters per secondSince Brenda is going west with her her skateboard, then you have to add west as her direction.
Brenda's velocity is 4.75 m/s west.