The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
Answer:
Yes
Explanation:
The atomic number never changes because the number of protons for na elecment never change and if they do, they trn into a neww element
How far is Louisville from the nearest oil field?
Answer:
anyywhere between 20-23 miles
Explanation:
it depends what type of oil field u mean
15,499 km is Louisville from the nearest oil field. Therefore, option A is correct.
What do you mean by an oil field ?An oil field is defined as a piece of land beneath which fossil fuels can be extracted for economic value. The world's oil is concentrated in oil fields found in the Middle East, along with other large deposits discovered beneath the ocean's surface.
Oil wells are classified into three different categories. Those that exclusively formed oil, those that exclusively formed natural gas and those that formed both oil and natural gas.
Petroleum supplies transportation fuel, is a part of many chemicals and medicines, and is used to create crucial items such as heart valves, contact lenses, and bandages. Oil reserves attract outside investment and are important for improving countries' overall economy.
Thus, 15,499 km is Louisville from the nearest oil field, option A is correct.
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Your question is incomplete, most probably your question was
How far is Louisville from the nearest oil field?
A.15,499 km
B.15,499 m
C.14,567 km
D.14,567 m
In a solution made of baking soda and water, the baking soda is the?
Answer:
solute
Explanation:
water is the solvent and baking soda is the solute and it dissolve in water to make a solution
someone help ,, I'll give brainliest loll .
Answer:
the answer is the emission of radiation from an atoms of a unstable element
Answer:
the answer is number 3, the emission of radiation...
Explanation:
someone help ,, I'll give brainliest lolll .
Answer:
#2
Explanation:
Corrosion is a natural process that converts a refined metal into a more chemically stable form . It is the gradual destruction of materials by chemical
11. What is the molarity of a solution that has 0.512 moles of NaCl dissolved in 0.24 L of solution? (Show WORK. Circle the correct answer: 2.1M or 1.2M)
Answer:
2.1 M
Explanation:
Molarity is moles per liter:
0.512 mol NaCl / 0.24 L = 2.1 M
can someone help me i need it before 10:10
Answer:
B 6NO A 5N2 C 6H2O D 4Nhd
Explanation:
hi can you balance the equation Fe + O2 = Fe2O3
Answer:
4Fe + 3O2→ 2Fe2O3
Explanation:
Fe + O2 → Fe2O3 is the unbalanced form of chemical reaction.
Balancing the simple molecules first, in this case the O2
Fe + 3O2→ Fe2O3 there are now 6 O atoms on the left, there must also be 6 O atoms on the right.
Fe + 3O2 → 2Fe2O3
Balance the rest of the equation.
4Fe + 3O2→ 2Fe2O3
In a metallic bond electrons are _______________. A. transferred C. shared B. delocalized D. lost
Answer:
in a metallic bond electrons are delocalized
1. Complete the following: (a) Covalent bonds are one type of ___________ forces that are formed when two atoms ______ electron(s) (b) Covalent compounds consists of two __________ atoms (c) Single covalent bond: are formed when two atoms share _______ pair of electrons. (d) Double covalent bond: are formed when two atoms share _________ pairs of electrons. (e) Triple covalent bond: are formed when two atoms share ________ pairs of electrons. (f) A molecule is a neutral groups of atoms that are held together by _______ bonds (g) Diatomic molecule consists of ________ atoms. (h) Molecular compound is made of _________ bonded atoms
Answer:
a) Van der Waals intermolecular forces
b) bonded
c) one pair
d) two pairs
e) three pairs
f) chemical bonds
g) two atoms
h) two or more covalently bonded atoms
Explanation:
(a) Covalent bonds are one type of Van der Waals intermolecular forces that are formed when two atoms share electron(s)
(b) Covalent compounds consists of two bonded atoms
(c) Single covalent bond: are formed when two atoms share one pair of electrons.
(d) Double covalent bond: are formed when two atoms share two pairs of electrons.
(e) Triple covalent bond: are formed when two atoms share three pairs of electrons.
(f) A molecule is a neutral groups of atoms that are held together by chemical bonds.
(g) Diatomic molecule consists of two atoms.
(h) Molecular compound is made of two or more covalently bonded atoms.
What does water offer that attracts human settlement?
Answer:
Water is a human necessity. Therefore, it is one of the first things a human settlement would need to have. A community cannot thrive without a water source.
Answer:
Water is a basic need that is more than a necessity, humans can't survive without water for more than a period of three days, And thus having water as available, creates a tendency among humans as humans like to get everything at ease so they tend to settle near the water bodies if possible.
An object with a mass of 2.0 kg had a force of 4.9 newtons applied to it.What is the resulting acceleration of the object?
This is from my Science Class !And I haven’t seen this question anywhere !
Answer:
2.45 m/s2
Explanation:
Newton's 2nd law tells us that force is equal to the mass of an object multiplied by its acceleration, or F = ma. We can solve this equation for acceleration by rearranging algebraically:
a = F/m
So:
a = (4.9N)/(2.0kg) = 2.45 m/s2
lots o points and brainliest To find the atomic mass of an element that is included on a periodic table, what must be found first?
The number of protons in that element.
The average mass of all the isotopes.
The number of electrons in that element.
The number of neutrons in that element.
Answer:
The average mass of all the isotopes.
Option B.
Explanation:
Have a great rest of your day.
If you get a root canal or any other potentially painful procedure done at the dentist's office, he or she will probably inject your gums with a local anesthetic to "numb the pain." Neurons that trigger pain are called nociceptors. They trigger pain in order to alert the body to potentially dangerous stimuli. Most local anesthetics hinder the activity of all local neurons, not just nociceptors, so pain is not the only sensation that goes away temporarily. Because all feeling is gone, you can end up drooling on yourself without knowing it.
Considering this information about local anesthestics, which of the following statements best demonstrates that science is an ongoing process that changes in response to new information and discoveries?
A. There are a variety of local anesthetics being used today, including lidocaine, prilocaine, and mepivacaine.
B. Sir Charles Sherrington, who discovered nociceptors, wrote a book about the nervous system that helped show its role in allowing organisms to adapt to their environments.
C. Unlike a local anesthetic, a general anesthetic causes a person to lose consciousness rather than sensation in one area.
D. Scientists have discovered a way to use a compound found in hot peppers, capsaicin, along with an anesthetic in order to block nociceptors only.
how to find molar mass
Answer:
Multiply the element's atomic mass by the number of atoms of that element in the compound. This will give you the relative amount that each element contributes to the compound. For hydrogen chloride, HCl, the molar mass of each element is 1.007 grams per mole for hydrogen and 35.453 grams per mole for chlorine.
Which statement BEST describes what happens during solvation?
Answer:
A
Explanation:
The statement best describes solvation " KCl is surrounded by the polar water molecule to form an electrolyte solution which can conduct electricity."
What is solvation?The act of attracting and associating particles of a solvent mostly with molecules as well as ions of a solute would be known as solvation.
What is electrolyte?A material that contains ions and has been electrically conducting due to the mobility of the ions but still doesn't conduct electrons was called an electrolyte.
Whenever the solvent would be in the water, the process is referred to as hydration. The process of solvation shows the combination of solvent and solute molecules. A solute molecule is usually surrounded with solvent molecules that are organized in a special manner during solvation.
Therefore, the correct answer will be an option (A)
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The melting point of a substance is the same as its _____ point.
evaporation
freezing
boiling
sublimation
Question #9: What is the
temperature at an altitude of 50
kilometers above sea level?
Answer:
20ºCelsius
Explanation:
whats the number of atoms in 5CaC12?
There are 70 atoms in 5CaC12
Which characteristics of flower petals help an angiosperm reproduce? (Select all that apply.)
Answer:
attractive smell and bright colours
WHAT ARE SOME POSSIBLE CONSEQUENCES IF A HUMAN BODY DOES NOT MAINTAIN
HOMEOSTASIS
Answer: If homeostasis is disrupted, it must be controlled or a disease/disorder may result.
Explanation: What happens if there's disruption? Your body systems work together to maintain balance. If that balance is shifted or disrupted and homeostasis is not maintained, the results may not allow normal functioning of the organism.
For the balanced equation shown below, if the reaction of 34.6 grams of C2H4F2 produces 6.90 grams of H2O, what is the percent yield?
2C2H4F2 + 3O2 → 4CO + 2H2O + 4HF
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An object accelerates 5.0 m/s2 when a force of 12.0 newtons applied to it.What is the mass of the object?
Please help, I haven’t seen this question anywhere !
Also this is from my Science Class
Answer:
2.4kg
Explanation:
Newton's 2nd law tells us that force is equal to the mass of an object multiplied by its acceleration, or F = ma. We can solve this equation for mass by rearranging algebraically:
m = F/a
So:
m = (12.0N)/(5.0m/s2) = 2.4kg
What is the mass of oxygen in 10 grams of water?
Answer:
The answer is 16.00 amu
The balanced equation below shows the products that are formed when butane (C4H10) is combusted.
2C4H10 + 13O2 Right arrow. 8CO2 + 10H2O
What is the mole ratio of butane to carbon dioxide?
2:8
1:5
13:8
13:10
Answer:
2:8
Explanation:
Answer:
2:8
Explanation:
got it right on edge
What is the percent composition of Iron in
Fez(Cr207)3
Answer:
Explanation:
The percentage composition of iron (Fe) in Fe2(Cr207)3 can be calculated by finding the molar mass of Fe and the compound
What is the oxidation state of S in S2032-?
O A. +3
O B. -2
O C. +4
D. +2
Answer: D.) +2
so the oxidation state of sulfur is +2.
Explanation:
Please help with chemistry
Answer:
Proton
Explanation:
It has a positive charge
Answer:
electron
Explanation:
Which is a higher concentration, 10-9 M or 10-8 M? Explain.
Answer:
10-9 Millimeters/liters
Explanation:
Because 10-9 M Is more than 10-8 M
I hope this is correct
Which one do I pick?
Answer:
i would go for the 2nd as far as i know they were a big continent and an earthquake separes them all
A scientist wants to investigate the effect of concentration of nutrient agar to the growth of bacteria. He created 3 set ups: A) 30 g nutrient agar powder in 1 L H2O B) 40 g nutrient agar power in 1L H2O C) 50 g nutrient agar powder in 1 L H2O
1) Based from the given scenario, CREATE a testable hypothesis using IF-THEN- BECAUSE statements.
2) Using your hypothesis, IDENTIFY the dependent and the independent variables.