The number of collisions between the particles of hydrogen and nitrogen is increased by using high
pressure and _______
What one word completes the sentence?
Answer:
temperature
Explanation:
increase in temperature increases the rate of reaction
A molecule with two atoms and no lone pairs around the central atom has a
shape.
A molecule with four atoms and no lone pairs around the central atom has a
shape.
A molecule that has two atoms and two lone pairs around the central atom has a
shape.
A molecule that has five atoms and no lone pairs around the central atom has a
shape.
DONE
Answer: linear
tetrahedral
bent
trigonal bipyramidal
Explanation:
When there are two atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 2 that means the hybridization will be sp and the electronic geometry of the molecule will be linear.
When there are four atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 4 that means the hybridization will be [tex]sp^3[/tex] and the electronic geometry of the molecule will be tetrahedral.
When there are two atoms around the central atom and two lone pair of electrons, the number of electron pairs will be 4 that means the hybridization will be [tex]sp^3[/tex] and the electronic geometry of the molecule will be bent.
When there are five atoms around the central atom and no lone pair of electrons, the number of electron pairs will be 5 that means the hybridization will be [tex]sp^3d[/tex] and the electronic geometry of the molecule will be trigonal bipyramidal.
HELP MEEE PLEASEEEEE
Answer:
A has the highest concentration
Explanation:
I'll simply explain it this way;
get a color pour the whole color in a solution in container A then add a little drop in the another container(B).
you'll find out that the first container has a thicker color than container B the same thing goes for this, Beaker A has a thick looking color unlike the rest.
This question is about metal oxides. When sodium is heated in oxygen, sodium oxide is produced.
Na + O2 ⟶ 2 Na2O
How many atoms of Na are required to balance this equation
Answer:
This is very easy Cuz We have 2Na2O We have O2 so thats molecule of Oxygen and its same on product We need to balance Na on start We have 1 on product We have 2 so Just put 2 at start....
Explanation:
Sorry for bad english not my first language :(
2Na+O2-->2Na20
What type of solution do you create if you put 50g of NH4Cl in 100g of water at 70 degrees C
Answer:
hi
Explanation:
I
A sample of gas has a volume of 606 mL at 35 °C. What temperature is necessary for the
gas to have a volume of 854 ml?
A 49 K
B. 707 K
C. 219 K
D. 434 K
Answer: D. 434 K
Explanation:
To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.
[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.
We are given:
[tex]V_1=606ml\\T_1=35^oC=(35+273)K=308K\\V_2=854ml\\T_2=?[/tex]
Putting values in above equation, we get:
[tex]\frac{606}{308}=\frac{854}{T_2}\\\\T_2=434K[/tex]
Thus temperature necessary for the gas to have a volume of 854 ml is 434 K
Identify the daughter isotope in this nuclear reaction: Superscript 222 subscript 88 upper R a right arrow superscript 218 subscript 86 R n plus superscript 4 subscript 2 upper H e. Which is the daughter isotope? Superscript 218 subscript 86 R n. Superscript 4 subscript 2 upper H e. Superscript 222 subscript 88 upper R a.
The daughter isotope which is present in the given radioactive decay is ²¹⁸₈₆R.
What is daughter isotope?A daughter isotope is the isotope that remains following the radioactive decay of an original isotope.
In the question parent nuclei is given that ²²²₈₈R, and given chemical equation is:
²²²₈₈R → ²¹⁸₈₆R + ⁴₂He
In the above equation ²¹⁸₈₆R is the daughter nuclei and ⁴₂He is the emitted particle or rays.
Hence ²¹⁸₈₆R is the daughter isotope.
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Answer:
222 88Ra
Explanation:
Give an example of a system that has energy.
Answer:
Aerobic Energy System
Explanation:
Answer:
Digestive system. It contains chemical energy. The digestive system breaks down food. Food contains chemical energy. To break down the food, the digestive system contains enzymes. Enzymes have kinetic energy to move and break down the food. They are biological catalysts. They transfer to the thermal energy store since in order to break down food at the fastest rate, they need to be at an optimum temperature.
I'm not sure if it's correct, but I'll provide some energy stores to give you inspiration:
Kinetic energy
Chemical energy
Nuclear energy
Gravitational potential energy
Elastic potential energy
Thermal energy
How many grams of aluminum is produced when 82.4 grams of aluminum chloride
decomposes into chlorine gas and aluminum metal?
2AICI: - 2 Al + 3C12
Answer:
16.6 g of Al are produced in the reaction of 82.4 g of AlCl₃
Explanation:
Let's see the decomposition reaction:
2AlCl₃ → 2Al + 3Cl₂
2 moles of aluminum chloride decompose to 2 moles of solid Al and 3 moles of chlorine gas.
We determine the moles of salt:
82.4 g . 1mol/ 133.34g = 0.618 moles
Ratio is 2:2. 2 moles of salt, can produce 2 moles of Al
Then, 0.618 moles of salt must produce 0.618 moles of Al.
Let's convert the moles to mass → 0.618 mol . 26.98g /mol = 16.6 g
What risks does nuclear waste pose to Earth or the sun or outer space?
Answer:
It could pollute other planets. Nuclear waste might be attracted by the gravitational pull of the sun and disintegrate there instead. The waste storage spacecraft could crash into a planet, moon, or another astronomical body. It could be dangerous for other life forms out there.
Explanation:
. Given the following pOH's, calculate the pH for the solution:
a) pOH = 4.18 b) pOH = 12.35
4. Given the following pH's, calculate the pOH for the solution:
a) pH = 6.2 b) pH = 9.55
Answer:
a) pH = 9.82 b) pH = 1.65
a) pOH = 7.8 b) pOH = 4.45
Explanation:
pOH + pH = 14 for all of these solutions.
pH is a quantitative measure of the acidity or basicity of aqueous or other liquid solutions.
3.a)Given;
pOH = 4.18
To Find;
pH = ?
We know that
pH + pOH = 14
pH = 14 – pOH
pH = 14 – 4.18
pH = 9.82
Thus, The pH of the solution is 9.82
b)Given;
pOH = 2.35
To Find;
pH = ?
We know that
pH + pOH = 14
pH = 14 – 2.35
pH = 14 – 2.35
pH = 11.65
Thus, The pH of the solution is 11.65
4. a)
Given;
pH = 6.2
To Find;
pOH = ?
We know that
pH + pOH = 14
pOH = 14 – pH
pOH = 14 – 6.2
pOH = 7.8
Thus, The pOH of the solution is 7.8
4. b)
Given;
pH = 9.55
To Find;
pOH = ?
We know that
pH + pOH = 14
pOH = 14 – pH
pOH = 14 – 9.55
pOH = 4.45
Thus, The pOH of the solution is 4.45
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How much carbon dioxide will be formed if 12.5 grams of oxygen reacts with 7.2 grams of propane (C3H8 )? Balanced equation: C3H8 + 5 O2→ 3 CO2 + 4H
Answer:
10.3125 grams of carbon dioxide will be formed.
Explanation:
The balanced reaction is:
C₃H₈ + 5 O₂→ 3 CO₂ + 4 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles participate in the reaction:
C₃H₈: 1 mole O₂: 5 molesCO₂: 3 moles H₂O: 4 molesBeing the molar mass of the compounds:
C₃H₈: 44 g/mole O₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/molethen by stoichiometry of the reaction, the following amounts of mass participate in the reaction:
C₃H₈: 1 mole* 44 g/mole = 44 gO₂: 5 moles* 32 g/mole= 160 gCO₂: 3 moles* 44 g/mole= 132 gH₂O: 4 moles* 18 g/mole= 72 gThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, it is possible to use a simple rule of three as follows: If by reaction stoichiometry 44 grams of propane react with 160 grams of oxygen, 7.2 grams of propane react with how much mass of oxygen?
[tex]mass of oxygen=\frac{7.2 grams of propane*160 grams of oxygen}{44 grams of propane}[/tex]
mass of oxygen= 26.18 grams
But 26.18 moles of O₂ are not available, 12.5 grams are available. Since you have less mass than you need to react with 7.2 grams of propane, oxygen O₂ will be the limiting reagent.
Then you can apply the following rule of three: if by stoichiometry of the reaction 160 grams of oxygen form 132 grams of carbon dioxide, 12.5 grams of oxygen will form how much mass of carbon dioxide?
[tex]mass of carbon dioxide=\frac{12.5 grams of oxygen*132 grams of carbon dioxide}{160 grams of oxygen}[/tex]
mass of carbon dioxide= 10.3125 grams
10.3125 grams of carbon dioxide will be formed.
Within a period, the nuclear charge increases as you move from left to right across the
periodic table. Again, in one sentence explain the reason for this increase. Be sure to
use your own words. PLEASE HELP
Answer:
The answer is Ionization energy.
Explanation:
Ionization Energy. The ionization energy tends to increase as one moves from left to right across a given period or up a group in the periodic table.
2Na3PO4 + 3CaCl2 --> 6NaCl + Ca3(PO) 2
The number of energy levels is determined by the
a. groups
b. periods
c. valence electrons
d. atomic mass number
Answer:
The answer is C
Explanation:
I did look it up, the other kid just spams random bs for points, hope you didn't get it wrong because of him! :)
Write a story about a family who uses a solar cooker and to stay healthy and safe.
If you begin with 4.0 grams of hydrogen and all of the oxygen that you need, how many grams of water can you make?
the water is 36 grams.
hope this helped
What is the number of copper atom in one naira coin which weight is 7.3g a sum of the material is 86%
Answer:
5.9x10²² atoms of Cu are in one naira coin
Explanation:
To solve this question we need to find the mass of Copper. Then, using its molar mass (Cu = 63.546g/mol) we must find the moles of Cu and its atoms using Avogadro's number:
Mass Cu:
7.3g * 86% = 6.278g is the mass of Cu.
Moles Cu:
6.278g * (1mol / 63.546g) = 0.099moles Cu
Atoms Cu:
0.099moles Cu * (6.022x10²³atoms / 1mol) =
5.9x10²² atoms of Cu are in one naira coinCell theory states:
l.All living cells must have a cell wall.
ll.All living cells require glucose for survival
lll.A cell is the basic unit of life.
A. l only
B.ll only
C.lll only
D. l and lll
Answer:
C
Explanation:
cell theory states:
all living things are made of 1 or more cells
all cells come from pre-existing cells
the cell is the basic unit of structure
Is freezing point depression a colligative property?
Answer:
Yes it is a colligative Property
Explanation:
There is freezing point depression, boiling point elevation, Osmotic Pressure, Vapor Pressure Lowering
What best describes a mixture
Answer:
In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. ... A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
Does volume alone determine whether an object will float or sink?
Answer:
no volume does not
Explanation:
What is the mass of 500 mL of
1.0 M of H2O?
Answer:
In order to obtain a volume of
1 L
,
500 mL
of water must be added to the original solution of
500 L
.
Explanation:
How does the length of a lunar month compare to the average length of a month in a standard 365-day calendar?
Draw electron-dot structure of cyclohexane.*
Answer:
Draw the example below
Hope this helps
Hope it helps.
If you have any query, feel free to ask.
Which statement about planetary orbits is correct?
O A. The planets travel in perfect circles around the sun.
O B. The planets travel in perfect circles around Earth.
O C. The planets travel in ellipses around the sun.
OD. The planets travel in ellipses around the moon.
Answer: C planets dont travel in perfect circles and they do not orbit earth they orbit the sun and they ellipse around the sun. this is the correct answer do not lsiten to the other person
Explanation:
The statement which is correct about planetary orbits is the planets travel in ellipses around the sun.
What are orbits?Orbits is the path of the motion, in which planets do revolutionary motion in a particular sequence.
In the solar system, sun is present at the center and all the planets do revolution around the sun in their orbits which are ellipse in their shape. Elliptical shape of the orbits is due the large distance of planets from the sun which reduces the speed due to less gravitational force of sun on that object.
Hence, option (C) is correct i.e. The planets travel in ellipses around the sun.
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How many grams are 3.01 x 10^23 molecules of methane (molar
mass = 16.04 g/mol)?
Answer:
8.02
Explanation:
.What is the KE of a baseball that has a mass of 100 kg and is traveling at 5 m/s?
Answer:
1250joules
Explanation:
The kinetic energy is energy in motion and it's formula is
KE =1/2MV^2
M represent mass which is 100Kg.
V represent velocity which is 5m/s
Therefore, KE = 1/2×100×5× 5
= 50 × 25
KE= 1250joules
Write out the balanced chemical equation for the reaction for when phosphate calcium reacts with lead chloride
Answer:
Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
(c) Aluminium + Copper chloride → Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chlorid
Explanation:
What is used up in and stops a chemical reaction?
Answer:What is used up in and stops a chemical reaction? (a) percent yield (b) limiting reactant (c) theoretical yield (d) excess reactant
The correct option is (b)
Explanation:
A chemical reaction is a chemical combination,rearrangement or disintegration of chemical substance(s) (called reactants) to form new chemical substance(s) (called products).
A limiting reactant is the reactant that is totally used up during the course of a reaction. When this reactant is used up, it limits the amount of products formed and eventually stops the chemical reaction.
Explanation:
The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. ... This method is most useful when there are only two reactants. The limiting reagent can also be derived by comparing the amount of products that can be formed from each reactant.
hope this helps have a nice day❤️