Answers
Answer:
the second one
Explanation:
because there are 3 of Na and one N
Related Questions
How does the oceanic crust compare to continental crust?
(1) the oceanic crust is thinner and contains less basalt
(2) the oceanic crust is thinner and contains more basalt
(3) the oceanic crust is thicker and contains less basalt
(4) the oceanic crust is thicker and contains more basalt
Answers
I think the answer is number (4)
What is the physical state of substance in a chemical reaction? What are the symbols of physical state?
Answers
Answer:
The physical state of chemicals is also very commonly stated in parentheses after the chemical symbol, especially for ionic reactions. When stating physical state, (s) denotes a solid, (l) denotes a liquid, (g) denotes a gas and (aq) denotes an aqueous solution.
Explanation:
Hope you like my answer
What do normal people call it?
Answers
Explanation:
crystal rocks blue ig
.
.
The amount of space is ___ and a common unit is ___.
A. mass, gram
B. volume, gram
C. mass, mL
D. volume, mL
Answers
Answer:
c
Explanation:
Calculate the number of atoms in 0.0340 g Zn.
Answers
Answer:
moles Hg = 25.8 / 200.59 = 0.129
atoms = 0.129 x 6.02 x 10^23 =7.74 x 10^22
Moles Zn = 0.0340 / 65.39 =0.000520
atoms = 3.13 x 10^20
work in the same way : divide the mass by the molar mass and multiply by 6.02 x 10^23
Explanation:
The number of atoms in 0.0340g of Zinc (Zn) is 3.148 × 10²⁰ atoms.
HOW TO CALCULATE NUMBER OF ATOMS:
The number of atoms contained in a substance can be calculated by multiplying the number of moles of that substance by Avogadro's number (6.02 × 10²³). That is;no. of atoms = no. of moles × 6.02 × 10²³
In this question, we must first convert 0.0340g of Zinc to moles by using the following formula:no. of moles = mass ÷ molar mass
no of moles = 0.0340g ÷ 65g/mol
no of moles = 5.23 × 10-⁴mol
Hence, the number of atoms in Zinc is as follows:no of atoms = 5.23 × 10-⁴ × 6.02 × 10²³
no. of atoms = 5.23 × 6.02 × 10²³-⁴
no of atoms = 31.48 × 10¹⁹
no of atoms = 3.148 × 10²⁰ atoms.
Therefore, the number of atoms in 0.0340g of Zinc (Zn) is 3.148 × 10²⁰ atoms.Learn more: https://brainly.com/question/22552359?referrer=searchResults
4 points
Looking at the periodic table which way do we label the groups, which
way do we label the periods?
Answers
The vertical columns are groups
The horizontal rows are periods
Explanation:
groups are the vertical rows of element and each group have the same no of valence electron
periods are the horizontal row of element on the basis of no of orbital
If you produced 50.0 moles of carbon dioxide from the complete combustion of ethanol in air, how many moles of water vapor are also produced?
Answers
hojbiuhok.
Explanation:
.;..........hv
in which part of the sun would the most helium be found?
Answers
it's most abundant in the mid latitudes.
how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2
Answers
Answer:
0.047
Explanation:
Data : 5g , Na2CO3
Formula:
Molecular mass of Na2Co3 = no.of atomic mass x no. of atom
moles = mass÷ molecular mass
molecular mass = 2(23)+1(12)+3(16)
=106amu
moles = 5÷106
= 0.047 Ans:
Pliss HELP ME only if you know the answer
Answers
Answer:
100 and 1 atm
Explanation:
I think the gas is given kinetic energy only from its temperature
Scientists have disocovered a new virus that is very different from any known viruses. What type of matter is the virus most likely made of
Answers
Answer: d. Compounds made by bonding of atoms of known elements.
Explanation:
Viruses are said to be so numerous that they vastly outnumber the number of stars in the universe. Viruses are quite small and are not technically alive until they get into a living cell.
Viruses are made up of compounds like everything else but just because a virus has not been discovered does not mean that it is made of unknown material. Every natural element available has already been discovered so any new virus is made of compounds of known elements.
5.
Inner shell electrons are not shared between atoms when they form
chemical bonds.
1.TRUE
2.FALSE
Answers
Yes, the statement is true because chemical bonds formed by sharing or transferring outermost electrons of an atom.
Why inner shells are not shared?Inner shell electrons are not shared between atoms when they form chemical bonds but the outermost electrons can form bonds with the atoms because they are easy to lose and share.
So we can conclude that the statement is true because chemical bonds formed by sharing or transferring outermost electrons of an atom.
Learn more about bonds here: https://brainly.com/question/25965295
#SPJ1
Identify one way Ultra Violet Rays can be harmful to humans? Thank you so much!
Answers
Answer
It can Blind humans
Explanation:
help pleaseeeeeeeeeeee
Answers
What happens when Mg forms an ionic bond?
O it gains one electron and becomes a -1 anion
O it loses one electron and becomes a +1 cation
o It loses 2 electrons and becomes a +2 cation
o It shares electrons with the other atom in the bond
ASAP please will mark as brainlist
Answers
Answer:
option 1st is correct gains 1 electron and becomes a-1.
What kind of mutations would X, Y, and Z represent?
Answers
Y- Substitution
Z-Insertion
How can a chemical reaction be sped up? Select from the drop-down menu to correctly complete the statement. Expose more of the reactant by increasing the A. Cataclyst B consentration c. Concentration d. Surface erea
Answers
Answer: A. Catalyst
Explanation:
An catalyst is used to speed up the rate of the reaction. In a biochemical reaction an enzyme is the only catalyst which is exposed to the reactant forming the enzyme substrate or reactant complex thus forming the product. The catalyst increases the product formation from the reactant by increasing the pace of the reaction. Catalyst does not get consumed in the reaction. It can be used repeatedly for multiple reactions.
To dissolve in water, zinc (Zn) should form a compound with
chloride (CI– ).
carbonate (CO32–).
hydroxide (OH– ).
phosphate (PO43–).
Answers
Answer:
carbonate i think
Explanation:
Answer:
Its Chloride
Explanation:
because im cool
What is the molecular formula of the following compound: NH_CI, molar mass = 51.5 g/mol?
Answers
Answer:
Explanation:
Explanation:
As you know, the empirical formula tells you what the smallest whole number ratio that exists between the atoms that make up a compound is.
In your case, you know that the empirical formula is
NH Cl
2
, which means that the regardles of how many atoms of each element you get in the actual compound, the ratio that exists between them will always be
1:2:1.
What you actually need to determine is how many empirical formulas are needed to get to the molecular formula.
Notice that the problem provides you with the molar mass of the compound. This means that you can use the molar mass of the empirical formula to determine exactly how many atoms you need to form the compound's molecule.
molar mass empirical formula×n=molar mass compound
To get the molar mass of the empirical formula, use the molar masses of its constituent atoms
14.0067 g/mol+2×1.00794 g/mol+35.453 g/mol=51.48 g/mol≈
51.5 g/mol
This means that you have
51.5g/mol×n=51.5g/mol
As you can see, you have
n=1.
This means that the empirical formula and the molecular formula are equivalent,
NH Cl.
2
Answer:
NH_Cl 2 is the answer to What is the molecular formula of the following compound: NH_CI, molar mass = 51.5 g/mol?
What is the chemical name for Iridium(V) Oxide?
Answers
Answer: Iro2
Explanation:
Iro2 compound name
Iridium(IV) oxide
Names
Chemical formula IrO2
Molar mass 224.22 g/mol
Appearance blue-black solid
Density 11.66 g/cm3
27 more rows
The chemical name for Iridium(v) oxide is Ir02
1)Water takes this form above 100c (solid, liquid or gas)
2) Water takes this form below 0c (solid, liquid, or gas)
3) Water takes this star between 0 and 100c (solid, liquid, or gas)
4) Water changes to this state above 100c (solid, liquid, or gas)
Science wasn’t a subject so I chose chemistry but this is for my science class
Answers
Answer:
I say the 1st one I'm so terrible sorry if I'm wrong
Explanation:
Water can take many forms. At low temperatures (below 0°C), it is a solid. When at “normal” temperatures (between 0°C and 100°C), it is a liquid. While at temperatures above 100°C, water is a gas (steam).
The state the water is in depends upon the temperature. Each state (solid, liquid, and gas) has its own unique set of physical properties.
Which pair of atoms can form an ionic bond?
A.
potassium (K) and fluorine (F)
B.
sodium (Na) and neon (Ne)
C.
fluorine (F) and chlorine (Cl)
D.
sodium (Na) and potassium (K)
Answers
Answer:
neon
Explanation:
We have 548 grams of CaCl2. How many molecules of CaCl2 do we have? (The molar mass of CaCl2 is 110.98 g/mol)
Group of answer choices
2.97 x 10^24 molecules
3.66 x 10^28 molecules
9.1 x 10^22 molecules
4.37 x 10^22 molecules
Answers
Answer:
Try everything
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules
Explanation:
Two 15.Kg objects are placed at four different distances from each other. At which distance would the two objects have the strongest gravitational attraction to each other?
Answers
Answer:
The strongest gravitational attraction between the two objects will be experienced when the distance between the two objects is smallest.
Explanation:
According to Newton's law of universal gravitation, the force of attraction between two objects is proportional to the products of their masses and inversely proportional to the square of the distance of separation between the two objects. This attraction between objects is known as gravity and it applies to all objects in the universe.
From the law of universal gravitation, since their is an inverse square relationship between gravitational force and the distance of separation between two interacting objects, an increase in the distance of separation will result in weaker gravitational forces. For example, if the distance of separation between two objects is increased by a factor of 2, then the force of gravitational attraction is decreased by a factor of 4 (since 2² = 4). However, if the distance of separation between the two objects is decreased by a factor of two, i.e. is halved, then the force of gravitational attraction is increased by a factor of 4.
Thus, the strongest gravitational attraction between the two objects will be experienced when the distance between the two objects is smallest.
The strongest gravitational attraction happens when the distance between the objects is smaller.
At which distance should we place the objects?We know that the gravitational force between two objects is inversely proportional to the square of the distance between the two objects.
This means that, because the mass of the objects does not change, the only thing that we can change to change the strength of the force is the distance between the objects, and because as we increase the distance the force decreases, we should select the smallest distance between the two objects.
Concluding, the strongest gravitational attraction happens when the distance between the objects is smaller.
If you want to learn more about gravity, you can read:
https://brainly.com/question/557206
What charge would you expect for an formed by P?
O +2
O-2
O +3
w
Look at picture
ASAP please will mark as brainlist don’t got much time
Answers
Answer:
friend according to the question the answer is +3 ....
How can a compound not conduct electricity as solid but do so when liquid?
HELP
Answers
Explanation:
Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ionsare free to move from place to place. Ionic compoundscannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.
Light travel in __________ lines until reflected or refracted .
Answers
Answer:
Light travel in _____straight_____ lines until reflected or refracted
For an electron with angular (azimuthal) quantum number ℓ = 2, the magnetic quantum number m can have
Answers
Answer:
-2, -1, 0, +1, +2
Explanation:
The quantum numbers describe the quantum state of an electron in an atom. These numbers are symbolized as n, l, m, and s. There are rules for the combination of these numbers. The angular quantum number (ℓ) is related to the magnetic number (m): if ℓ is equal to a number a, thus m can be any integer number between - a and +a.
According to this rule:
If ℓ = 2, thus m can be have a value of an integer between -2 and +2 ⇒ -2, -1, 0, +1, +2
ONLY ANSWER IF YOUR ACTUAL GONIG TO PUT A REAL ANSWER Thanks & asap
A person is driving north in a car at a constant speed. A police officer is driving south toward him at a constant speed. The police officer uses a radar unit to measure the speed of the person’s car. The radar unit sends out waves of a certain frequency toward the person’s car. The waves reflect off the person’s car and travel back to the radar unit in the police car.
What happens to the frequency of the waves detected by the radar unit?
A )The frequency is lower as the person’s car approaches.
B) The frequency is higher as the person’s car approaches.
C) The frequency remains the same but with increased energy as the person’s car approaches.
D) The frequency remains the same but with decreased energy as the person’s car approaches.
Answers
Which particle is NOT part of an atom?
Answers
Answer:
Magnetic Domain
Explanation:
An atom consists of nucleus and electrons revolving around it.
Nucleus is filled with proton and neutron.
So atom consists of electron, proton and neutron.
The magnetic domain is not present in an atom.