what are the starting substances (molecules) in a chemical reaction called?
Answer:pruducts Explanation:
Answer:
The Reactants
Explanation:
A P E X
#11- i will mark 5 stars, thanks, and mark brainliest just please help me
Answer:
what is the question????
an ion that consists of 7 protons, 6 neutrons, and 10 electrons has a net charge of
Answer:
-3
Explanation:
The charge of the ion is determined by the number of protons and the number of electrons.
Protons are a positive + charge.
Electrons are a negative - charge.
We have 7 protons and 10 electrons.
+7 charge
-10 charge
-10 + 7 = -3 charge
How many moles is 5.38 x 10^21 atoms of sodium
Answer:
The answer is
0.0089 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]
From the question
N = 5.38 × 10²¹ atoms of sodium
We have
[tex]n = \frac{5.38 \times {10}^{21} }{6.02 \times {10}^{23} } \\ = 0.00893687...[/tex]
We have the final answer as
0.0089 molesHope this helps you
What changes in trade did Europeans hope to bring about by finding sea routes to Asian markets?
PLEASE ANSWER THIS WUICK PLEASEEEE
Answer:
controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.
give me example of analyze
Answer: analyze the question so that you can get a correct answer
Explanation:
Help with homework explain GRADE12 1-3 please
Answer:
1. a) 1.27 mol H₂SO₄
2. b) 19 g KCl
Explanation:
The grass method is an acronym for Given, Required, Application, Solution, Statement.
1. a) Given, 125g H₂SO₄; Required, find the moles H₂SO₄; Application, 125g x molar mass of H₂SO₄, Solution, [tex]125g H2SO4 * \frac{1molH2SO4}{98.08gH2SO4} = 1.274469molH2SO4[/tex] Statement, Round to the lowest number of significant figures to get 1.27 mol H₂SO₄;
2. b) I am only show the equation for this one, but it is basically the same as the previous one. The molar mass of KCl is 74.55 g/mol.
[tex]0.25molKCl*\frac{74.55gKCl}{1molKCl} = 18.6375 gKCl[/tex]
Round to the lowest number of significant figures which is two to get 19 g KCl.
For 3 the unit converter between moles and molecules is 6.022 x 10²³ molecules/mol.
Let me know if you need more help.
Calculate the number of particles in a 0.75 gram sample of Calcium Nitrate; Ca(NO3)2
The number of particles : 2.75 x 10²¹
Further explanationA mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12
1 mole = 6.02.10²³ particles
[tex]\tt n=\dfrac{N}{N_o}[/tex]
N = number of particles
No = Avogadro number (6.02.10²³)
n = number of moles
While the number of moles can also be obtained by dividing the mass (in grams) with the molar mass of element or molecule
0.75 gram sample of Calcium Nitrate; Ca(NO₃)₂
MW of Ca(NO₃)₂ : 164.09 g/mol
[tex]\tt mol~Ca(NO_3)_2=\dfrac{0.75}{164.09}=0.00457[/tex]
The number of particles
[tex]\tt N=n\times N_o\\\\N=0.00457\times 6.02\times 10^{23}=2.75\times 10^{21}[/tex]
Which product forms from a reaction between beryllium (Be) and arsenic (As)?
A. BeAs2
B. BeAs
C. Be3As2
D. Be2As3
Answer:
Be3As2
Explanation:
Answer:
C) Be3As2
Explanation:
A.P.E.X
different forms of genes for a single trait
Answer:
different forms of genes for a single trait
Explanation:
There are three main forms of genes that can exist for a single trait and they are:
Dominant alleleRecessive alleleCo-dominant allelesWhat are the different forms of genes for a single traitA dominant allele is a stronger version of a gene that shows up when at least one copy of it is present in an organism's genetic makeup. It hides the effects of the weaker gene. In a person with two different alleles, the one that is more powerful decides how the person looks or behaves.
Recessive allele: A recessive allele is only expressed when there are two of the same recessive alleles present. It is hidden by a strong gene. The recessive allele can only be seen when a person has two copies of it.
Co-dominant alleles: When co-dominant alleles are together, both are shown. In this situation, neither gene is stronger than the other, and both play a role in what an organism looks like. One example of co-dominance is the ABO blood type system. In this system, both the A and B alleles are of equal importance.
Read more about genes here:
https://brainly.com/question/1480756
#SPJ6
CH3F
How many total valence electrons?
Answer:14
explanation: For CH3F, we have a total of 14 valence electrons. Hydrogen always goes on the outside of Lewis structures. And then Carbon is less electronegative than Fluorine, so let's put the Carbon in the center and the Hydrogens on the outside there, and the Fluorine on the top. We have a total of 14 valence electrons for CH3F.
How can some of the difficulties caused by the Down Syndrome be over come?
Samples of the air we breathe that were taken from different parts of the world have all been found to contain about 78% nitrogen, 2196
oxygen, 0.9% argon, 0.03% carbon dioxide, and 0.07% other gases. Based on this analysis, which is the correct classification for air?
Answer:
homogeneous mixture
Explanation:
The correct classification for air is a homogeneous mixture.
What is a Mixture?Material is referred to as a mixture when two or more chemicals combine without undergoing a chemical reaction.
Heterogeneous and homogeneous mixtures are the two types of mixtures.
While homogeneous mixtures seem consistent throughout, heterogeneous mixtures have clearly discernible components.
A solution, which can be a solid, liquid, or gas, is the most typical kind of homogenous mixture.
Mixtures are composed of two or more different substances that have not been chemically mixed. The following is a list of mixture properties.
Each of the components in a mixture retains its unique features.
Component separation is simple to carry out.
The component's relative weights vary.
The classification for air is 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and 0.07% other gases.
This classification for air has the properties of a homogeneous mixture.
To know more about Mixture
https://brainly.com/question/24898889
#SPJ6
True or false. The center of gravity and center of mass of an object need to be in the same spot?
True
False
Answer:
i think false
Explanation:
Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field
found it on google so it could be wrong
Answer:
True
Explanation:
I took a quiz and got it right
pls mark as brainliest.
As the pressure of a system changes, boiling points can change in what direction?
Answer:
If the pressure of the system increases then the boiling point will increase.
If the pressure of the system decreases then the boiling point will decrease. If there is no change in pressure then the boiling point will remain constant.
Explanation:
which chemical species can easily for an ionic bond with a cation?
A. Sr
B. Ne
C. NH4+
D. PO4³-
Answer:Option D
Explanation:i took the test
which phase of matter is the rarest in the solar system
Answer:
liquid
Explanation:
Answer:
liquid
Explanation:
what element has 16 protons in it's nucleus?
Hassium belongs to what
block of the periodic table
PLS ANSWER ASAP
Explanation:
Hassium belongs to d-block of the periodic table.
A compound such as CaCl, would have an overall charge of?
Calcium Chloride would have a charge of +2
Hopes this helps :)
What state of matter has the most energy in its molecules
Answer:
Gas
Explanation:
How many atoms are in 0.075 mol of titanium?
O 4.5 x 1022
O 1.2 x 10-25
O 6.4 x 102
O 2.2 x 1024
Answer:
The answer is
4.5 × 10²²Explanation:
To find the number of atoms of titanium , given it's number of moles we use the formula
N = n × Lwhere 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
n = 0.075 mol
We have
N = 0.075 × 6.02 × 10²³
We have the final answer as
4.5 × 10²²Hope this helps you
4. DNA replication:
a. Occurs in the cytoplasm of the cell
b. Does not require proteins
C. Takes place in the nucleus of the cell
Is constantly happening in a cell
Answer:
A.
Explanation:
Answer:
b
Explanation:
6th grade help me pleaseee
Answer:
D hope this helps
Explanation:
Answer:
d. what will happen to the freezing point of the water if salt is added?
7. If we have the same number of protons and electrons, our atom is ___________________________.
A: Negative
B:Positive
Answer:
It's actually Neutral
Explanation:
equal number of negative electric charges (the electrons) and positive electric charges (the protons).
To which family on the Periodic Table does this Bohr Model belong?
Answer: Hydrogen
Explanation: The Bohr Atom is a very simplified model of the electron positions of each element of the Periodic Table. Each Row of the periodic table is represented by an orbit. Hydrogen and Helium are in the first energy level (row) of the periodic table and their Bohr Models would have one orbit.
Hope this helps! :)
Metals typically lose electrons and become cations lose electrons and become cations lose electrons and become anions lose electrons and become anions gain electrons and become anions gain electrons and become anions gain electrons and become cations
Answer:
Metals typically loose electrons and become cations
Explanation:
Metals are typically found towards the left hand side of the periodic table. They typically possess fewer electrons in their outermost shell compared to nonmetals.
As a result of this, when metals form chemical bonds with other elements, it is energetically more favourable for metals to loose electrons and form cations.
PLEASE HELP AND THANKS
Answer:
torque =force*distance
Plz help! The best answer will be marked as brainliest!
Make a funny sentence for flammability and compounds for Magnesium
Here is an example for Mercury, it HAS to for Magnesium
“I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”
Answer:
I literally just answered this question
Explanation:
Give me a brainliest
A scientist heats a 300-g sample of iron from 30°C to 50°C. How much heat did the iron absorb.
The specific heat capacity of iron is 0.45 J/gºC.
Оа
Oь
Ос
Od
3,000)
2,700)
202,500)
2,500)
Answer:
d
Explanation:educated guess
