Answer:
NO_x
Explanation:
you said it
which chemical formal shows an ionic compound? A. CO2 B.N 2 O C.NaCI D.C6 H12 O6
Answer:
B
N2O
Explanation:
maybe
d can also be lol
need boy who is at leaast 12
Answer:
helloo!!!!!!! I am 12 :)
How many ethnic groups are there in China?
Answer:
There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.
Explanation:
There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.
♔♔Can water stay liquid below zero degrees Celsius?✞♡♡♡
Answer:
Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen. The freezing point of water drops below zero degrees Celsius as you apply pressure. When we apply pressure to a liquid, we force the molecules to get closer together.
Explanation:
Hope this helps you. Have a nice day.^_^
Please mark as brainliest. It helps a lot:)
Answer:
yes water can stay liquid below 0 ° Celsius
Which stament describes a Newton
Answer:
It reflects the amount of force an object exerts. It states that every object attracts another object.
1. Which of the following is neutrally charged?
c. an electron
b. a compound d. a proton
a. an ion
d. a proton
Answer:
B. A compound
Explanation:
An ion is defined as a charged particle, so it's not going to be that. Ions can be positively or negatively charged.
Electrons are tiny particles, smaller than an atom, that revolve around the nucleus. They have a negative charge. So they are not neutral either
Protons are also a part of atoms, like electrons are. An atom is neutral overall. This is because protons have a positive charge that balances out the negative charge of electrons.
So, the only answer option we have left is for a compound. So, that's our answer!
Answer:
c. an electron
Explanation:
A neutral charge is the electrochemical occurrence where an atom has an equal number of electrons and protons. Such an atom is neither positively charged nor negatively charged because the protons and electrons balance each other out
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Answer:
It's false. We can not alter the formula of the substance involved in a chemical reaction.
convert 5.65 x 10^26 atoms of phosphorus to moles
Answer:
938.54 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
[tex]n = \frac{5.65 \times {10}^{26} }{6.02 \times {10}^{23} } \\ = 938.5382[/tex]
We have the final answer as
938.54 molesHope this helps you
Which of the following ions is formed when a base is dissolved in a solution?
H+
O−
OH−
SO42+
Answer:
The Answer is B.
Explanation:
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~Hope this helps!
Which types of energy can be TRANSFERRED? Select ALL that apply.
-thermal
-electromagnetic
-mechanical
-electrical
Determine the amount protons and electrons in Mg^2+
Answer:
12 protons, 12 neutrons and 10 electron
Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 10 neutrons. Click on the “Templates” button template button and make use of the "stacked super/subscript" button button for entering stackes super/subscripts for entering the mass number and atomic number of the isotope.
Answer:
8 electróns
Explanation:
because the Last protons
A student is studying Earth's Layers. She is trying to determine how temperature and density change from one layer to another. Which relationship that exists between Earth's
Sversed the student mostly find
The temperature of Earth's layers decreases with depth while density increases with depth
The temperature of Earth's layers increases with depth while density decreases with depth
The temperature and density of Earth's layers decrease with depth
The temperature and density of Earth's layers increase with depth
Answer:
I believe it is D sorry if I am wrong
Explanation:
Answer:
D.
Explanation:
- What happens when a hydrogen atom absorbs a quantum of energy?
the hydrogen moves to an excited state and electrons will move to higher energy levels
Each atom consists of a central nucleus and several shells that contain electrons. The outermost electrons are called valence electrons. Most atoms are stable with a configuration of eight valence electrons. This is known as the octet rule. How many valence electrons does each atom have?
If you are talking about an atom with a full octet, then it would just have a full shell of 8 valence electrons.
Answer:
valence
Explanation:
caulculate the number of mass of 0.25 mol of carbon dioxide molecules
The element radium has a mass number of 226 and an atomic number of 88. How many neutrons does an atom of radium have?
A. 226.
B. 88.
C. 138.
D. 314.
Answer:
if you subtract 88 from 226 you get 138
so uour answer would be C.
Answer:
138
the conversion of an atom of one element into a different element through nuclear changes
A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change
82
Some of the matter is converted to energy
Explanation:
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Answer: See below
Explanation: a. The mass of an element is composed of:
protons: 1 amu each
neutrons: 1 amu each
electrons: 0 amu each
Only the protons and neutrons are counted in the atomic mass of an element
b. Electrons are assigned a mass of 0. They do have a mass, but it is exceedingly small compared to the protons and neutrons, so they are left out of the calculation of an element's mass.
c. An element becomes unstable if the neutrons exceed the protons by a certain ratio, dependent on the element.
If the roller coaster car in the above problem were moving with twice the speed (4m/s), then what would be its
new kinetic energy?
Explanation:
New kinetic energy= ½mv'²
v' =4m/s
m= 2000kg
KE = ½ (2000) (4)²
=16000 Joules
Measuring the volume of air near 100°C
Answer:
[tex]1m ^ {3}[/tex]
Explanation:
UwU
PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . THANK YOUU
Find out how filtration is used in the human body ?
Answer:
Filtration is the removal or filtering of the toxins and waste products from the blood by the kidney. They are excreted from the body through urine. In general, filtration refers to the passing of a liquid through a filter. In the human body, the kidney functions as a filter.
Explanation:
Please help me with the following question below:
Molarity as Stoikiometri
Level : SHSEquatuions od Molarity :
M = m/Mr × 1000/V
Mr Lithium Dichromate (Li2CrO4)
= Ar Li (2) + Ar Cr + Ar O (4)
= 7 (2) + 52 + 16 (4)
= 14 + 52 + 64
= 130 g/mol
Molarity
= m/Mr × 1000/V
= 19.5 g/130 g/mol × 1000/95 mL
= 0.15 mol × 10.53 /L
= 1.5795 mol/L
So, the molarity of the solution is 1.5795 mol/L
#LearnWithEXO
Which of the following is NOT a correct ordering of subshells in the periodic table?
O 2p < 35
O 3d < 4p
O 3d < 45
04s < 4p
3d < 4s is NOT a correct ordering of subshells in the periodic table because 4s is at a lower energy level than 3d.
According to the Aufbau principle, The electron configuration of an element tells how electrons of that element are arranged in thier subshells from their lowest energy state before the highest energy state.
For example, before a 2s subshell can be occupied, A 1s subshell must be filled.
The orbitals are filled in this order:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s,
For example, Na (sodium) with 11 atomic number is written as 1s2 2s2 2p6 3s1
Therefore,
2p < 3s True
3d < 4p True
3d < 4s False
4s < 4p True
See more here: https://brainly.com/question/19221869
18) Max can lift 180 x 104 grams with ease. How much is this in pounds
Answer:
41.184 pounds
Explanation:
Calculate the total grams first.
180 x 104 = 18,720 grams
Convert that into kilograms (kg)
18,720g 1 kg
------------ X ------------- = 18.720 kg
1 1000 g
Convert kilograms into pounds.
18.729 kg 2.2 lb
--------------- X ----------- = 41.184 lb (pounds)
1 1 kg
help me I beg you please
Answer:
44 98
Explanation:
Carbon Dioxide (CO2) - Has 1 carbon and 2 oxygens,
C=12 O=16,
Relative atomic mass(Ar) = 12 + (16 x 2),
Relative formula mass(Mr)= 44
Sulphuric Acid (H2SO4) - Has 2 hydrogens, 1 sulphur and 4 oxygens,
H=1 S=32 O=16,
Relative atomic mass(Ar) = (1 x 2) + 32 + (16 x 4)
Relative formula mass(Mr)= 98
1. What is the energy of a microwave photon that has a frequency of 1.07 * 10 ^ 12 * H * z; (h = 6.63 * 10 ^ - 34 * J * s)
Answer:
7.96 x 10^-22 J
Explanation:
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Answer:
I think it's A and C. Please tell me if I am wrong.
Explanation:
Answer:
Alright so I did this quiz a while ago it's A and C now could i have brainliest?
Explanation:
19. When you cut an apple in half. What type of change has occurred?
A.
Ichemical
C.
temporary
B.
physica
D.
reactive
Answer:
Physical
Explanation:
Nothing has chemically happened and the change is permenant therefore it is physical
MARKING BRAINIEST HURRY!!
Read the following statement:
For every action, there is an equal and opposite reaction.
Does the statement describe a scientific law?
Yes, because it describes action-reaction force pairs
No, because it describes action-reaction force pairs
Yes, because it is applicable to a single or only a few events in the natural world
No, because it is applicable to a single or only a few events in the natural world
Yes, because it describes action-reaction force pairs