Answer:
B. 6
Explanation:
Isotope given:
¹⁴₆C
In specie written as this;
Superscript = Mass number
Subscript = Atomic number
To find the protons, it is the same as the atomic number;
Protons = Atomic number = 6
Neutrons have no charges;
Neutrons = Mass number - Atomic number =
Neutrons = 14 - 6 = 8
The number of electrons is the same as the atomic number = 6
Will any of these properties change after a couple hours in the sun?
Answer:
you didnt show a picture, but if it just exposed then it will probably be a physical change
Explanation:
What is water (H2O)? Select all that apply * an element a molecule 1 hydrogen and 2 oxygen 2 hydrogen and 1 oxygen
Answer:
2 hydrogen and 1 oxygen
Explanation:
H2O
Hydrogen has the coefficient so you multiply 1 by 2 and it equals 2
Oxygen does not have any sub or coe so its automatically 1
1. How do you think shivering on a cold day helps
maintain internal body conditiona?
Answer:
shivering is a natural bodily response, the body is trying to heat itself up by moving around.
What is the frequency of light with a wavelength of 3.2 x 10^-16 m?
Answer:
f = 0.94 ×10²⁴ Hz
Explanation:
Given data:
Frequency of light = ?
Wavelength of light = 3.2 ×10⁻¹⁶ m
Solution:
Formula:
Speed of light = wavelength × frequency
c = λ × f
c = speed of wave = 3×10⁸ m/s
by putting values,
3×10⁸ m/s = f × 3.2 ×10⁻¹⁶ m
f = 3×10⁸ m/s / 3.2 ×10⁻¹⁶ m
f = 0.94 ×10²⁴ s⁻¹
f = 0.94 ×10²⁴ Hz (Hz = s⁻¹)
What biomolecule is considered the "instruction manual for
life"?
Chloroplast
Mitochondria
DNA
Help ASAP thank you!
What is an animal-like, unicellular protist called?
protozoan
euglenoid
slime mold
decompos
Answer:
protozoan
Explanation:
An animal - like unicellular protist is called a protozoan. Such organisms shows similarities with animals.
Protozoans are unicellular organisms. They are similar to animals in that they perform nearly all life functions that makes animals very unique. They are mostly heterotrophs which feed on foods that have been produced by autotrophs. Examples are flagellates and ciliates.Covalent bonds involve the sharing of?
Answer:
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Explanation:
I hope this helps
PLEASE HELP. WILL GIVE BRAINLIEST AND QUESTION WORTH A 100 POINTS. NEED ANDWER ASAP!
Conclusion: In a paragraph, describe how physical and chemical properties help us
identify the difference between metals, nonmetals and metalloids. Discuss
characteristics that metals have in common, characteristics that nonmetals have in
common, and characteristics that metalloids have in common.
Answer:
extensive properties such as mass and volume depend on something like perhaps the amount of what's measured. physical properties can be measured without changing substance chemical identity.
metals are the elements which exhibit degree of metallic behavior is know as metals. non metals are such elements which do not posses any metallic behavior and mekkloids are those elements that posses some of the properties like metal. but they act either like metals or non metals n they also have the same physical properties
Calcium is a metal that is part of bone. it has several naturally-occurring
isotopes. Calculate the average atomic mass. Ca-40 39.96amu 96.941%,
Ca-42, 41.96 amu 0.647%, Ca-43 42.96amu 0.135% Ca-44 43.96 amu
2.086%, Ca-48 47.95amu 0.187% *
pls help
The average atomic mass of Ca : 43.943 amu
Further explanationGiven
Isotopes of Ca
Required
The average atomic mass
Solution
Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is the average atomic mass of all its isotopes
Avg atomic mass = m1.%m1 + m2.%m2....mn.%mn
m1 = isotope 1
m2 = isotope 2
% = abundance of the elements in nature
Input the value :
avg atomic mass = 39.96 x 0.96941 + 41.96 x 0.0647+42.96 x 0.0135 + 43.96 x 0.02086 + 47.95 x 0.0187
avg atomic mass =43.943 amu
Help me please it’s due today
Answer:
The girl is 300N as she is staying still, and not buried in the ground or flying, hence, it has to be the same as the force pushing down. Sorry, can't answer about the rocket one.
Explanation:
Stephanie the Skydiver has a mass of 48kg, what is the force that she
exerts as she is falling to the ground?
Answer:
470.4N
Explanation:
Given parameters:
Mass of Stephanie = 48kg
Unknown:
Force she exerts while falling to the ground = ?
Solution:
The force she exerts is her weight;
Weight = mass x acceleration due to gravity
Now insert the parameters ands solve ;
Weight = 48 x 9.8 = 470.4N
CAN SOMEBODY PLEASE HELP ME ANSWER THIS CORRECTLY?! (There’s only one option per term, I just really need help and I would appreciate it)
~TERMS~
1. Theory
2. Controlled
3. Variables
4. Hypothesis
5. Independent
6. Quantitative
~DEFINITIONS~
A.) a variable that stays the same during an experiment.
B.) All the things that can be tested and/or observed in an experiment.
C.) An explanation that best explains observable facts, has been well tested and is widely accepted.
D.) describing something using your senses.
E.) summary explaining whether or not the hypothesis was supported by the experimental results.
F.) the variable that changed after doing the experiment.
G.) the variable you choose to test.
H.) Using numbers or amounts to describe something.
I.) your prediction on how the experiment will turn out.
(Answer like 1a or 2b.) (I need answers for all 6 terms) if you help me, thank you like alot
Answer:
1: C
2: A
3: B
4: I
5: G
6: H
Explanation:
Please don't crucify me if I'm wrong ;-;
I need help pls Where does it belong to?
Help me (number 5).
Answer:
a. HF
Explanation:
What three traits are used to classify organisms
hope this answer helps and have a good day
How many particles are in 3.2 mole of neon gas
There are 1.93 x 10²⁴ particles
Further explanationGiven
3.2 moles of Neon gas
Required
Number of particles
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
So the number of particles for 3.2 moles :
N = 3.2 x 6.02.10²³
N = 1.93 x 10²⁴
or
we can describe it using Avogadro's number conversion factor
[tex]\tt 3.2~moles\times \dfrac{6.02\times 10^{23}}{1~mole}=1.93\times 10^{24}[/tex]
In an electrically neutral atom of any element, there are equal numbers of
A. Protons and neurons.
B. electrons and procons.
C. electrons and neurrons.
D. atomic number and atomia mess. 5
Answer:
B. electrons and protons.
Explanation:
In an electrically neutral atom of any element, there are equal number of protons and electrons in the atom.
Protons are the positively charged particles in an atom.
Electrons are the negatively charged particles within the atom.
When the number of protons and electrons are the same or equal, the atom is neutral.
But when there is an imbalance, an ion results.
A 1.00 L flask is filled with 1.20 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pressure is 1.300 atm .
What is the partial pressure of argon, PAr, in the flask?
Answer:
Partial pressure of Ar = 0.73 atm
Explanation:
Given data:
Volume of flask = 1.00 L
Mass of Ar = 1.20 g
Temperature = 25 °C (25+273.15 K= 298.15 k)
Total pressure = 1.300 atm
Partial pressure of Ar = ?
Solution:
First of all we will calculate the number of moles of Ar:
Number of moles = mass/ molar mass
Number of moles = 1.20 g/ 39.95 g/mol
Number of moles = 0.03 mol
Pressure of Ar:
PV = nRT
R = general gas constant = 0.0821 atm.L /mol.K
P×1.00 L = 0.03 mol × 0.0821 atm.L /mol.K× 298.15 k
P = 0.73 atm.L /1.00 L
P = 0.73 atm
Total pressure = Partial Pressure of Ar + Partial pressure of ethane
1.300 atm = 0.73 atm + P(ethane)
P(ethane) = 1.300 atm - 0.73 atm
P(ethane) = 0.57 atm
What is electrical energy?
O A. Energy stored in a molecule
B. Energy released by a temperature change
O c. The movement of electrons
O D. The sound from an explosion
How many grams of KClO3 will dissolve in 300g of water at 50°C?
Answer:
50 g
Explanation:
Please brainiest
The electron configuration for nitrogen is 152 2s22p3. When N2 forms,
how does each nitrogen atom fulfill the octet rule?
Answer:
N2 has a triple bond with its Lewis structure. Nitrogen has 5 valence electrons. Two nitrogen's have a total of 10 valence electrons. There will be 6 valence electrons that are unequally shared. We move them in the middle. Therefore, Each nitrogen gives three pairs of electrons to the to the other nitrogen atom. N2 has a total of 8 electrons which completes the octet rule.
Explanation:
Hope it helped!
pick repel,or attract. were its circled
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid _____
O has no observable changes
O boils vigorously
O begins to boil
O evaporates
Answer:
O begins to boil
Explanation:
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid suddenly begins to boil.
At this point the boiling point of the liquid has been reached. Further addition of heat energy will cause the liquid to boil vigorously Subsequently evaporation will start from the surface of the boiling liquid.The atmospheric pressure is the ambient pressure measured with the respect to the sea level pressure.Answer:
has no observable changes
Explanation:
24.Og sample of carbon contains how may moles?
Answer:
2 moles
Explanation:
1.9982182553889358 real number but round up to 2
Veronica's teacher asked her to add another material that will dissolve in water into her beaker of sugar water. Which material should she add and how could she get it to dissolve quickly?
Answer:
she should add salt to the mixture
Explanation:
salt is easily able to dissolve
How does a rock
Wither? Explain.
First, it combines with carbon dioxide in the soil to form a weak acid called carbonic acid. ... Carbonic acid slowly dissolves away minerals in rock, especially the carbonate minerals that make up limestone and marble. The weak acid decomposes the insoluble rock into watersoluble products that move into the groundwater.
A car traveled a distance of 30 km in 20 seconds (1/3 hour). What was the speed of the car?
Answer:
90.1km/hr
Explanation:
Given parameters:
Distance = 30km
Time = 20s = 0.33hr
Unknown :
Speed of the car = ?
Solution:
To solve this problem;
Speed = [tex]\frac{distance }{time}[/tex]
Now insert the parameters and solve;
Speed = [tex]\frac{30}{0.333}[/tex] = 90.1km/hr
What is the final temperature of the metal?
What is the temperature of the water?
What is the temperature change of the metal?
Answer: 29.8
Explanation:
Does anyone know what I should put for number 2 if you KNOWW plssss
I traveled for 0.5 hr at 80 km/h. How far did I travel?
Answer:
[tex]Distance = 40km[/tex]
Explanation:
Given
[tex]Speed = 80km/hr[/tex]
[tex]Time = 0.5hr[/tex]
Required
Determine the distance covered
Distance is calculated as:
[tex]Distance = Speed * Time[/tex]
Substitute values for Speed and Time
[tex]Distance = 80km/hr * 0.5hr[/tex]
[tex]Distance = 80km * 0.5[/tex]
[tex]Distance = 40km[/tex]
Hence, you travelled 40km
