Answer:
2689.4
Explanation:
Problem: Janna, a student of a chemistry class, told her friend that she learnt in class that bottled water is not pure. Kim, her best friend, refused to believe Janna, referring to phrases on the label of the bottle.Help me
Answer:
The bottle is labeled pure so it probably is pure.
Explanation:
What is igneous rock?
Answer: A) Rock formed by...magma or lava
Explanation:
As the question says, igneous rocks are formed from the cooling and solidification of magma or lava.
just a bit of visual aid thanks to Thoughtco.
Answer:
It is the first one - Rock formed by the cooling and solidification of hot liquid magma or lava.
Explanation:
Difference Between baking soda and baking powder
Answer:
Baking soda is sodium bicarbonate, which requires acid and a liquid to become activated and help baked goods rise. Conversely, baking powder includes sodium bicarbonate, as well as an acid. It only needs a liquid to become activated. Substituting one for the other is possible with careful adjustments. Baking soda is strong. In fact, it is about 3-4x stronger than baking powder. More baking soda in a recipe doesn't necessarily mean more lift.
Explanation:
Explanation:
baking soda contains one ingredient, sodium bicarbonate. however, baking powder contains sodium bicarbonate , monocalcium phosphate and either sodium acid prophetess or sodium aluminum sulfate
the smallest unit of matter that retains the properties of that matter is
Answer:
here is your answer.
Explanation:
atom.
thanks for asking:)
The nucleus’ pull on its electrons, taking into account any attractions weakened by shielding is called the:
Answer:
It's called the shielding effect
Explanation:
It describes the decrease in attraction between an electron and the nucleus in any atom with more than one electron shell. (I hope this helps)
The attraction pull of the nucleus on its electron weakened by the shielding of the inner shell electron is called the shielding effect.
What is the shielding effect?The shielding effect is the valence electrons are shielded from the attraction toward the nucleus of an atom. The shielding effect is the resistance offered by the inner shell electrons to the attraction of the valence electrons toward the nucleus.
This effect increases down the group in the periodic table as the atomic radii also increase and remains the same in the period. This effect is generated by the electrons present in the middle of the nucleus and valence electrons act as shields that repel those outer electrons.
Therefore, the effective nuclear charge acting on the valence electrons decreases. More shielding effect causes less electronegativity of an atom. The shielding effect describes how easily the electron can be removed from the atom making it more reactive.
Learn more about the shielding effect, here:
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What factors affect the strength of electric and magnetic forces?
Answer:
nature of the core material, strength of the current passing through the core
Explanation:
Have a great day
Which choice lists the different types of change in order of increasing energy
a) chemical, nuclear, physical
b) chemical, physical, nuclear
c) physical, chemical, nuclear
d) nuclear, chemical, physical
Answer:
Your answer is D.
Explanation:
Answer:
I would answer D
Explanation:
I might be wrong though
which is more soluble in an acidic solution than in pure water?
Answer:
the anion of a salt is able to react with a H+ ion to form a weak acid, it can be removed from the solution by adding an acid. For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water:
From the following which is not an ore
a.bauxite
b.haematite
c.calamine
d.cyolite
Answer: d. Cyolite
Explanation:
a.bauxite - Aluminum ore ✅
b.haematite - Iron ore ✅
c.calamine - an ore of zinc ✅
d.cyolite - ❌ the ore is cryolite
✅ - is an ore
❌ - not an ore
Someone please help :/
I'm writing a lab report for my chem class on crystalline structures and I have absolutely no idea how to write the introduction. Can someone please direct me on how exactly I should write this?
Thanks!
Answer:
yes i will help
txt me. down and show what is the. project
An atom is electrically neutral when...
O The number of protons and neutrons are equal.
O The number of protons and electrons are equal.
O The number of neutrons and electrons are equal.
O The neutrons balance the protons and electrons.
Answer:
The number of protons and electrons are equal.
Explanation:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.
why does it smell like burning when i turn my heat on?
Answer:
your lightbulb is mot likely burnt out
Explanation:
The mass number is equal to the number of blank in the nucleus of the atom
Answer:
c
Explanation:
Which one please help
Answer:
density is mass more mass more density and same as volume
The "clusters" of Democritus are like what kind of material
that we know of today?
Hi! I could use some help, I need to turn this in today
Each of these Ionic Compounds are named INCORRECTLY.
1. Find and describe the mistake
2. Correctly name the compound.
CaCl2 - Calcium Chlorine
CuS - Copper Sulfide
Li3P - Trilithium Phosphide
CuBr - Copper(II) Bromide
NaOH - Sodium Hydrogen Oxide
Explanation:
The nomenclature of ionic compounds is given by:
1. Positive is written first. And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
1.) : Calcium chloride (Correct)
In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.
2.) : Copper (II) oxide (Incorrect)
In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.
3.) : Lead (II) sulfide (Incorrect)
In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.
what is the physical state of gold at room temperature
Answer:
solid
Explanation:
gold is relatively unreactive and exists as a solid at room temperature
It is found as a solid in gold mines, and in gold nuggets in river beds
Anyone wanna have fun? gvk psad wsq
Answer:
Nope im cool to sleep right now
Explanation:
Give the number of the sample bottle that contains a substance that would be used in
each situation.
1.
Plumbing
5.
Computer chips
2.
Flavoring Food
6.
Edible Cooking Ingredient
3.
Crafts
7.
Edible Cooking Ingredient
For a headache
8.
Edible Cooking Ingredient
to o N O
4.
What is the reaction type
2 Mgl2+ Mn(SO3)2 → 2 MgSO3 + Mnl4
Answer:
The reaction type is double displacement
70 points!!!! will mark the brainliest,
ANSWER ASAP PLS??????????????
Answer:
I believe it's A.
Explanation:
Answer:
option C
Explanation:
There are 2 types of changes
Physical change :- The physical properties are changed and its temporary.Chemical change :- The chemical properties are changed and its permanent.how many barr bodies are found in a normal human female nucleus
Answer:
One Barr body
Explanation:
when the orbitals or energy levels of an atom are full, it is considered to be stable. which atom in the ground state has a stable electron configuration?
Answer:
Noble gases, atoms which have complete filled outer orbits.
Explanation:
SInce, you have given no options elements like Neon, Helium,etc
Noble elements are the atoms which have stable electronic configuration in the ground state.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
Learn more about electronic configuration,here:
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which of the following controls all the activities which go on in the cell
Answer:
That would be the necleus! I hope this helps you! :)
Question 5
The energy produced by a generator can BEST be described as
A thermal
B chemical
C nuclear
D kinetic
E electrical
Answer:
E- Electrical
Explanation:
It converts mechanical energy to electrical energy
"A base is a substance that produce OH-ions." Which definition of a base is this?
A. Titration
B. Bronsted-Lowry
C. Arrhenius
D. Alkali
Answer:
C. Arrhenius
An Arrhenius base is a substance that dissociates in water to form hydroxide (OH–) ions. In other words, a base increases the concentration of OH– ions in an aqueous solution.
Explanation:
pls mark as brainliest
at sea level, the average height of mercury in a barometer is
Answer: 760 mm
Explanation:
At sea level, a mercury column will rise a distance of 760 mm. At higher altitudes, the atmospheric pressure is decreased and so the column of mercury will not rise as high.
Based on electronegativity differences, which bond is a polar covalent bond?
Answer:
A bond in which the electronegativity difference between the atoms is between 0.4 and 1.7 is called a polar covalent bond.
A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal.
What happens in the following cases. [ ( write two eg for each also write is there any ex
change of energy ) ] i) when an element combine with another element. ii) When an element combine with a compound. iii) When a compound combine with another compound.
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what is the trend for atomic radii across the periods and down the group?
Answer:
So, in general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant.
Explanation:
Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.
Have a happy day! <3Miss Hawaii
