Answer:
Notice that the number of atoms of
K
and
Cl
are the same on both sides, but the numbers of
O
atoms are not. There are 3
O
atoms on the the left side and 2 on the right. 3 and 2 are factors of 6, so add coefficients so that there are 6
O
atoms on both sides.
2KClO
3
(
s
)
+ heat
→
KCl(s)
+
3O
2
(
g
)
Now the
K
and
Cl
atoms are not balanced. There are 2 of each on the left and 1 of each on the right. Add a coefficient of 2 in front of
KCl
.
2KClO
3
(
s
)
+ heat
→
2KCl(s)
+
3O
2
(
g
)
The equation is now balanced with 2
K
atoms,
statement that accurately describes broadleaf trees??
Answer:thy have needle like leave
Explanation:
Answer:
dzfz d vfg
Explanation:
bnnbvmyjggbbdfg
2. When iron rusts what is it reacting with?
Carbon Dioxide
O
Salt
O Oxygen
O Chocolate
Answer:
The answer is oxygen
Isotope what dose it mean
Answer:
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
"some elements have only one stable isotope"
Explanation:
What role did photographic plates play in the discovery of radioactivity?
When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
Explanation: Please mark me brainliest :)
21.Electromagnetic radiation can take the form of which of the following types of waves
a.Heat
b.Light
c.Ultraviolet
d.All of the above
State, in terms of the strength of intermolecular forces, why 12 has a higher boiling point than F2
Answer:
See explanation
Explanation:
The greater the relative atomic mass of an atom the more polarizable the atom is.
Also, the magnitude of dispersion forces depends on the molecular mass of the compound.
We must remember that both I2 and F2 are nonpolar molecules that are purely held together by dispersion forces.
Hence, I2, having the greater molecular mass and surface area experiences a greater magnitude of dispersion forces and consequently has a higher boiling point than F2.
The major product during addition of HBr to propene in the presence of peroxide is
A. 2-Bromopropane
B. 1-Bromopropane
C. 1,1-dibromopropane
D. 1,2-Dibromopropane
Answer:
A. 2-Bromopropane
Explanation:
Propene is the second member of the alkene group with the chemical formula; C3H6. It reacts with hydrogen bromide (HBr), which is an acidic compound to form an alkylbromide.
In this reaction, the formation of a major product is in accordance with Markovnikov's rule, which emphasizes that hydrogen will be added to the carbon with more hydrogen. Hence, the bromide ion of HBr will be added to the second carbon atom of the alkene (propene), to form 2-bromopropane as a major product.
The reaction is as follows:
CH3CH=CH2 (propene) + HBr → CH3CHBrCH3 (2-bromopropane).
How many moles of each element are in one mole of (NH4)2S? (3 points)
a
1 mole of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
b
1 mole of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
c
2 moles of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
d
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Answer:
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Explanation: i took the test and got it right
The number of moles for each element in one mole of (NH₄)₂S are:
d. 2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Identification of number of moles:The number of moles can be identified by dividing the given mass by molar mass.
In one mole of (NH₄)₂S there are moles of each participating element i.e. nitrogen, oxygen, hydrogen, and sulfur.
In this molecule, there are 2 moles of nitrogen, 8 moles of hydrogen, and one mole of sulfur.
Thus, option d is correct.
Find more information about One mole here:
brainly.com/question/1358482
From Bill Nye Germs video in the way cool scientist section, what career is the focus of this segment?
I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know
Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate
Answer:
See explanation
Explanation:
When a beaker of ethanoic acid is placed in the refrigerator, its temperature drops and the vessel feels cool.
Now, when we mix ethanoic acid and sodium carbonate, an endothermic reaction occurs, fizzing is observed as carbon dioxide is given off and heat is lost to the surroundings causing the reaction vessel to feel cool to touch.
The difference between putting ethanoic acid in the refrigerator and adding sodium carbonate to the solution is that, in the former, no new substance is formed. The substance remains ethanoic acid when retrieved from the refrigerator. In the later case, new substances are formed. The substance is no more ethanoic acid because a chemical reaction has taken place.
what will happen if you increase the electric current is flowing through an electro magnet
Answer:see below
Explanation: The magnetic field will strengthen and the magnet will get warmer (resistance effect)
Calculate the mass of the zinc that reacts with 4.11 g of hydrochloric acid to form 9.1 g of zinc chloride and 3.97 g of hydrogen gas.
Answer: Mass of zinc that reacts with 4.11 g of hydrochloric acid to form 9.1 g of zinc chloride and 3.97 g of hydrogen gas is 8.96 g
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
[tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]
Given: mass of hydrochloric acid = 4.11 g
Mass of products = Mass of zinc chloride + mass of hydrogen = 9.1 g + 3.97 g = 13.07 g
As mass of reactant = mass of products
mass of hydrochloric acid + mass of zinc = Mass of zinc chloride + mass of hydrogen
4.11 g + mass of zinc = 13.07 g
mass of zinc = 8.96 g
PLEASE HELP i suck at chemistry ;(
Answer:
Explanation:
The Molar mass of Fe(Bro)2 = 167. 748 mol/g
Plz help... answer this question!
Answer:
B
Explanation:
Because element is made up of only one type of atoms and figure b show only one type of atoms.
What is the word equation for the decomposition of hydrogen peroxide
Answer:
2H2O2 --> 2H2O + O2
Explanation:
We know that hydrogen peroxide is H2O2
Decomposition means that you break down so break down H2O2
H2O2 --> H2O + O2
There are three oxygens so we have to balance
2H2O2 --> 2H2O + O2
What is a solution made of
Answer:
A solution is made when a substance called the solute "dissolves" into another substance called the solvent.
Explanation:
Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules.
Mr. Evans rides his bicycle an average speed of 8 km/hr. How far has he
traveled if he rides 4 hours?
Answer:
[tex]\boxed {\boxed {\sf 32 \ kilometers}}[/tex]
Explanation:
Distance is the product of speed and time.
[tex]d=s*t[/tex]
The speed is 8 kilometers per hour and the time is 4 hours.
[tex]s= 8 \ km/hr \\t= 4 \ hr[/tex]
Substitute the values into the formula and multiply. Note that the hours will cancel when multiplied.
[tex]d= 8 \ km/hr * 4 \ hr[/tex]
[tex]d= 32 \ km[/tex]
Mr. Evans traveled 32 kilometers.
Answer:
32 km.
Explanation:
Distance = speed × time
We know that Mr. Evans is riding his bicycle at an average of 8km/hr, or 8 kilometers per hour. He is riding his bike for 4 hours, so we will need to multiply according to the formula.
8 × 4 = 32
The answer to the question is 32 kilometers.
plllllz its 100 and i give brain list
Answer:
Your answer is the on with the clownfish and the anemone
Explanation:
Hope this helps!
3. What is the primary consumer in the following food chain, sun - tomato plant - tomato worm - wasp?
tomato worm
tomato plant
wasp
sun
Answer:
Tomato worm
Explanatio
v
vv
Answer
Tomato Worm
Explanation:
9. Carbon-14 has a half-life of 5,730 years. How many years have passed after 3
half-lives?
Answer:
120 gram sample of a radioactive element, how many grams of that element will be left after 3 half-lives have passed? If you have a 300
Explanation:
Hope this helps!
Which substance can form a coordinate covalent bond with a hydrogen ion?
a. H2
b. He
c. NH3
d. CH4
The substance can form a coordinate covalent bond with a hydrogen ion is He. Hence, option B is correct.
What is covalent bond ?An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs.
Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.
Covalent bonds were first described in 1939. The word "covalent bond" is derived from the prefix co-, which means jointly, associated in action, partnered to a lesser extent, etc. The hydrogen atoms share the two electrons through covalent bonding since the prefix co- implies jointly, associated in action, etc.
Thus, option B is correct.
To learn more about covalent bond, follow the link;
https://brainly.com/question/10777799
#SPJ2
_____
particles are very small compared to the large
amounts of empty space in the container.
Answer:
Gas
Explanation:
The question is asking solid, liquid or gas. Gas particles are the smallest.
Select a statement which is NOT true about solubility.*
(1 Point)
a) Solubility of solids in liquids increases with temperature.
b) Solubility can be increased by using powdered sugar than sugar cube.
c) Solubility of gases decreases with decrease in temperature.
d) Solubility of solids are different in different solutions.
Ok
Answer:
I think it's b.
Explanation:
Because solubility increased by temperature.
Answer:
b) Solubility can be increased using sugar powder than sugar cube
i just had my chemistry lessons completed and we were revising solubility llol
____CH4 +___O2 ->
____H3N+____O2->
Explanation:
CH4 + 2 O2 -> CO2 +2 H2O
4 H3N+3 O2 -> 6H2O + 2 N2
In each of the following sets of elements, which one will be least likely to gain or lose electrons?
1. Cesium (Cs), Rubidium (Rb), and Sodium (Na)
2. Barium (Ba), Calcium (Ca), and Beryllium (Be)
3. Fluorine (F), Chlorine (Cl), and Bromine (Br)
4. Tellurium (Te), Oxygen (O), and Sulfur (S)
Photochemical isomerization of (E,E)-2,4-hexadiene to (Z,E)-2,4-hexadiene is a two-step process in which a photochemically driven intermediate forms and then thermally rearranges to give the product. Draw the structure of this intermediate, using wedge-and-dash bonds to denote the appropriate stereochemistry.
Answer:
Its response to this question is as follows:
Explanation:
Please find in the attachment file the complete query and the answer file.
Answer the question using the equation: HCl(aq)+H2O(l)→H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq) Which product is a Lewis base?
Answer:
Cl-
Explanation:
The equation of the reaction is;
H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq)
Lewis base refers to substances that can donate a lone pair of electrons(e.g OH^-, Cl^- etc) or a pair of nonbonding electrons.(eg NH3, H20 etc). A Lewis base is therefore an electron-pair donor. They are easily recognized because they often have lone pairs or are negatively charged species.
If we look at the products, Cl- is a Lewis base because it is a lone pair donor. We see this more clearly because the specie is negatively charged.
Answer:
Cl
Explanation:
< Question 3 of 25
>
What is the pressure of the gas in this mercury manometer
if h = 85 mm and atmospheric pressure is 755 mmHg?
pressure:
mmHg
Answer:
360mmHg is the correct answer in its units
Cuban swimmer Cesar Godoy won the gold medal In the 150-meter freestyle swim. He
swam 150 meters In 23 seconds. How fast did he swim on average?
The average speed = 6.52 m/s
Further explanationGiven
distance = 150 m
time = 23 s
Required
The average speed
Solution
The average speed : distance traveled divided by time taken or total distance divided by total elapsed time
Can be formulated :
avg speed = distance : time
avg speed = d : t
Input the value :
avg speed = 150 m : 23 s
avg speed = 6.52 m/s
True or false.
“Sleeping does not give us energy, but is important because it helps us repair wounds; think better, grow and survive.”
hurry pls pls plsss
Answer:
False
Explanation: