Answer:
c
Explanation:
cuz
The reason Senators are in office for 6 years is....(pick one of the following)
1) To separate Senators from the whims of the
general public.
2) to save money in elections
3) Because Senators are
required to be older
than representatives
Why is there a bond between the ions in potassium chloride
Answer:
Explanation:
When the two atoms are in contact, potassium transfers its outer electron to chlorine which readily accepts it, resulting in both atoms achieving a state of eight outermost electrons. With this electron transfer, the ionic bond in KCl is formed.
Hope this helped!!!
Potassium has just one valence electron and Chlorine has 7 electrons, Chlorine needs just one atom to complete its octet which is provided by Potassium atom for formation of Potassium Chloride (KCl).
What is Chemical Bonding?Chemical bonding is the formation of chemical bonds present between two or more atoms or molecules which give rise to new compound. Bond is formed from electrostatic force present between oppositely charged ions like in ionic bonds or by sharing of electrons like in covalent bonds.
There are two types of Chemical Bonding:
1. Ionic Bonding
It is formed between opposite charged particles like Anion (negatively charged) and Cation (Positively charged) by the strong force of attraction.
For example, KCl formed by the ionic bond formation present between Potassium and Chlorine
2.Chemical Bonding
It is formed between two atoms for completing its octet by sharing of electrons.
For example, [tex]H_2[/tex] formed by sharing the electrons to complete its electronic configuration.
Thus, Potassium has just one valence electron and Chlorine has 7 electrons, Chlorine needs just one atom to complete its octet which is provided by Potassium atom for formation of Potassium Chloride (KCl).
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Question of the day
Seeds obtain their energy (food) directly from the soil as soon as they are planted.
True or False?
Answer:
false
Explanation:
it gets nourishment from the storage tissues in the seeds, when it develops into a young plant with roots, then it takes nutrients from the soil
The reaction of perchloric acid (HClO4) with lithium hydroxide (LiOH) is described by the equation: HClO4 + LiOH → LiClO4 + H2O Suppose 100 mL of perchloric acid is neutralized by exactly 46.9 mL of 0.75 M lithium hydroxide. What is the concentration of the perchloric acid?
Answer:
[HClO₄] = 0.35 M
Explanation:
Neutralization reaction is:
HClO₄ + LiOH → LiClO₄ + H₂O
In this case, we have a titration between a weak acid and a strong base.
In chemistry it is also called an acid base equilibrium.
HClO₄ + H₂O ⇄ ClO₄⁻ + H₃O⁺ Ka
The weak acid is firstly neutralized by the strong base, in order to have a buffer solution before the equivalence point.
When we reach the equivalence point, mmoles of acid = mmoles of base and there is a formula to determine it so:
M acid . Volume of acid = M base . Volume of base
M acid . 100 mL = 0.75 M . 46.9 mL
M acid = (0.75 M . 46.9 mL) / 100 mL → 0.35 M
Explain how the cardiovascular system helps your body function
Answer:
The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
Explanation:
You're welcome!
Stay Safe!
What processes and involved in the creation of sedimentary rock? Please help
Answer:
yuhhhhhhhhhhh
Explanation:
explain in 3 complete sentences
Answer:Air in high pressure systems moves in an anticlockwise direction (in the southern hemisphere), while air in low pressure systems moves in a clockwise direction due to the rotation of the Earth. At the surface of the Earth air flows from high pressure systems into low pressure systems.
Explanation:
Warm air rises, creating a low pressure zone; cool air sinks, creating a high pressure zone. Air that moves horizontally between high and low pressure zones makes wind.Smaller pressure systems create localized winds that affect the weather and climate of a local area.
WILL MARK BRAINLIEST
Answer:
B) inertia
Explanation:
Sorry if wrong
______________________________ is the attraction amongst molecules that are dissimilar.
A.) Transpiration
B.) Cohesion
C.) Adhesion
D.) Polarity
Answer:
ily
Explanation:
How many atoms are in 1.00 moles of Calcium (Ca)?
Answer:
One mole is equal to 6.02214179×1023 atoms, or other elementary units such as molecules.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore number of atoms in 1.00 moles of Calcium (Ca) are 6.022×10²³ atoms.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is inversely proportional to molar mass.
Mathematically,
mole =given mass ÷ molar mass
Number of atoms = moles ×6.022×10²³ atoms
Substituting the values in above formula we get
Number of atoms = 1 ×6.022×10²³ atoms
Number of atoms 1 mole of calcium = 6.022×10²³ atoms
Therefore, number of atoms in 1.00 moles of Calcium (Ca) are 6.022×10²³ atoms.
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PLEASE HELP ASAP NO LINKS PLEASE
What is the force that keeps the planets in perfect orbit around the sun?
A) Velocity
B) Gravity
C) Centrifugal Force
D) Magnetism
Answer:
gravity
Explanation:
Gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies.
Hope this helped!!!
GUYS HELP PLS QUICK LOTS OF POINTS AND BRAINLIEST!
A 0.250 M solution was prepared from 135 mL of a 7.00 solution. What volume of water (in mL) was required for dilution?
Answer:
385
Explanation:
0.250m Converted to 250 mL then 250+135+ the answer
I'm not sure?
Tides are the result of forces exerted on Earth's oceans, mostly by which celestial body?
The Sun
Jupiter
The Moon
Venus
Answer:
Explanation:
The moon
A full moon appears on July 1: On what date is the next full moon likely to appear in the night sky?
А July 15
B July 29
C August 14
D August 28
A full Moon chances roughly every 29.5 days, so it may be possible the next full moon likely to appear in the night sky of Earth on July 29, hence the option B is correct.
The lunar phase during which the Moon is completely lit from Earth's viewpoint is known as the full moon.
When Earth is situated halfway between the Sun and the Moon, this happens. This indicates that the near side of the moon, which faces Earth, is fully illuminated by the sun and appears as a roughly round disc.
A full Moon chances roughly every 29.5 days, so it may be possible the next full moon likely to appear in the night sky on July 29.
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A gas is collected at 30 Celsius and has a pressure of 200 kPa. What pressure would it exert if the temperature changed to 40 Celsius?
Answer:
[tex]206.6\ \text{kPa}[/tex]
Explanation:
[tex]P_1[/tex] = Initial pressure = 200 kPa
[tex]P_2[/tex] = Final pressure
[tex]T_1[/tex] = Initial temperature = [tex]30^{\circ}\text{C}[/tex]
[tex]T_2[/tex] = Final temperature = [tex]40^{\circ}\text{C}[/tex]
We have the relation
[tex]\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=\dfrac{T_2}{T_1}P_1\\\Rightarrow P_2=\dfrac{40+273.15}{30+273.15}\times 200\\\Rightarrow P_2=206.6\ \text{kPa}[/tex]
The pressure that would be exerted after the temperature change is [tex]206.6\ \text{kPa}[/tex].
SOMEONE HELP PLS! I missed a day and I need help rn
Answer:
D
Explanation:
the charge of the atom is
Answer:
the charge of an atom is zero.
Explanation:
i hope this is what you were asking for.
Will mark brainly
ASAP thank you if you solve this
What happens to iron in a bolt as the bolt rusts?
Iron gets converted from Fe2+ to Fe3+ during rusting. Details about rusting can be found below.
What is rusting?Rusting is the deteriorated state of iron or steel as a result of moisture and oxidation.
Rusting is characterized by a reddish-brown color on the surface of the iron.
Rusting is caused by oxidation of iron II (Fe2+) ion into iron III (Fe3+) ion.
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Can y’all help me with this
A neutralization reaction occurs between sodium hydroxide and sulfurous acid. Complete the equation below for the neutralization reaction that ocurs during the titration
Answer:
2NaOH + H₂SO₃ → 2H₂O + Na₂SO₃
Explanation:
When a base as sodium hydroxide (NaOH) reacts with an acid as sulfurous acid (H₂SO₃), the H⁺ of the acid will produce with the OH⁻ of the base H₂O. Te complementary ions will produce the respective salt (Na₂SO₃):
NaOH + H₂SO₃ → H₂O + Na₂SO₃
To balance the sodiums:
2NaOH + H₂SO₃ → H₂O + Na₂SO₃
And the hydrogens:
2NaOH + H₂SO₃ → 2H₂O + Na₂SO₃And this is the complete reaction for this neutralization reaction.
1) A 45.7 g sample of glass was brought to thermal equilibrium with boiling water and then transferred to 250.0 g of water that was at 22.5 °C. This combination reached thermal equilibrium at 24.2 °C. What is the specific heat capacity of glass?
2) What mass of silver at 100.0 °C, when added to 150.0 g of water at 21.0 °C, would raise the water’s temperature to 24.0 °C ?
3) The molar heat of fusion of H2O is 6.1 kJ/mole. What amount of energy would be needed to melt 376 g of ice at 0.0 °C?
1) A 45.7 g sample of glass was brought to thermal equilibrium with boiling water and then transferred to 250.0 g of water that was at 22.5 °C. This combination reached thermal equilibrium at 24.2 °C. What is the specific heat capacity of glass?
2) What mass of silver at 100.0 °C, when added to 150.0 g of water at 21.0 °C, would raise the water’s temperature to 24.0 °C ?
3) The molar heat of fusion of H2O is 6.1 kJ/mole. What amount of energy would be needed to melt 376 g of ice at 0.0 °C?
What is Hess's law?
A. Hess's law states that the enthalpy of a reaction changes with
temperature
B. Hess's law states that the enthalpy of a reaction does not depend
on the reaction path.
C. Hess's law states that only changes in enthalpy of a reaction can
be known.
D. Hess's law states that the enthalpy of a reaction depends on the
reaction path
Answer:
B. Hess's law states that the enthalpy of a reaction does not depend
on the reaction path.
Explanation:
Orbital structure of sodium?
Answer:
na.
sodium
11( 2,81,)
pls Mark me as brainlest
Can someone please help me. Like right now please
Answer:
3rd law
Explanation:
when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Which of the following statements concerning double covalent bonds is correct?
They are found only in molecules that contain S or O.
S
They are found only in molecules that contain a coordinate covalent bond.
They occur on y between atoms containing 4 valence electrons.
They involve tie sharing of 2 electron pairs.
t
they involve tie sharing of 2 electrons pairs.
Write a summary of the following Physical and Chemical Properties
Answer:
The physical properties of matter are those characteristics that can be measured without altering the atomic structure, while the chemical properties of matter are those characteristics that result in a change in the atomic structure.
I need helpppp plsss
Answer: Blank 1: 6
Blank 2: 1
Blank 3: 7
Explanation:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation. Explanation: According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
The balanced chemical equation will be:
[tex]6H_3BO_3\rightarrow H_4B_6O_{11}+7H_2O[/tex]
The measured amount of product obtained from a chemical reaction
is the.
A box slides with an initial speed of 4.0 towards a spring on a frictionless horizontal surface. When the box
S
N
hits a spring with spring constant k = 150 the spring compresses by 0.30 m.
m
m
M
What is the mass of the box?
Answer: .84kg
Explanation:
Khan academy
A box slides with an initial speed of 4.0 kg m/s towards a spring on a frictionless horizontal surface. When the box hits a spring with spring constant k = 150 N/m, the spring compresses by 0.30 m.
What is the mass of the box?
Answer: 0.54 kg