Answers
Answer:
None of the above
Explanation:
• This is because all the metal oxides provided are below magnesium in the reactivity series.
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Related Questions
convert 5.65 x 10^26 atoms of phosphorus to moles
Answers
Answer:
938.54 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]
where 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
[tex]n = \frac{5.65 \times {10}^{26} }{6.02 \times {10}^{23} } \\ = 938.5382[/tex]
We have the final answer as
938.54 molesHope this helps you
Help please!! I thought it was 374.8 but it keeps saying to check my significant digits
Answers
Answer:
ok
Explanation:
i am doing now so
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Read the following statement:
For every action, there is an equal and opposite reaction.
Does the statement describe a scientific law?
Yes, because it describes action-reaction force pairs
No, because it describes action-reaction force pairs
Yes, because it is applicable to a single or only a few events in the natural world
No, because it is applicable to a single or only a few events in the natural world
Answers
Yes, because it describes action-reaction force pairs
What particles would you find in a nucleus of an atom
Answers
Answer:
The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus.
describe the structure of a typical metal such as iron ?
assaaap
Answers
Answer:
Metals consist of giant structures of atoms arranged in a regular pattern. The electrons from the outer shells of the metal atoms are delocalised , and are free to move through the whole structure. This sharing of delocalised electrons results in strong metallic bonding .
Explanation:
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6Na(s) + N2(g) --> 2Na3N(s)
Answers
Answer:
80.0 g Na and 20.0 g N2.
Explanation:
This means the limiting reactant determines the maximum mass of the product formed.
A quarter moon is called this because
Answers
Explanation:
A quarter moon is called a quarter moon because it is the moment the moon has reached the first quarter of it orbit around the earth
Given R = 0.0821L⋅atm/mol⋅k, what is the volume of mole of gas at a pressure of 3.12 atm and a temperature of 270K?
A. 69.2 L/mol
B. 86.5 L/mol
C. 22.2 L/mol
D. 7.10 L/mol
Answers
Answer:
The answer is d
Explanation:
Answer:
The answer is D
Explanation:
Please answer please
Answers
Answer:
1k km
Explanation:
How can you identify the gas produced in a chemical reaction without observing the atoms and molecules directly?
Answers
To identify the gas produced in a chemical reaction without observing the atoms and molecules directly through the characteristics of the gas.
Chemical reaction is defined as the process by which substances (known as reactants) combine together with the formation of bonds to form products.
There are some signs that shows that chemical reaction has occurred. They include:
Color Change Change of temperatureGiving off gas (Evolution of gas)Therefore, the production of gas from a chemical reaction shows that a reaction has occurred.
These gases can be identified without observing the molecules through that characteristics of the gas. This include:
the smell of the gas: For example when a gas is given off, and it smells like urine, it's likely to be ammonia gas. color change that occurs during the chemical reaction can show the type of gas that was given off. For example when lime water turns into milky color, it shows the presence of carbondioxide gas.Learn more here:
https://brainly.com/question/15740593
Turn on "Show formula". What is the formula of this compound?
Answers
Answer:
you can find the answer in this link
https://www.coursehero.com/file/p4kfbhi5/B-Turn-on-Show-formula-What-is-the-formula-of-this-compound-Li2O-C-Turn-on-Show/
Help Help Help!:
Which option would be an appropriate model of nuclear fission?
A. dividing a stack of paper equally between two people
B. taking a teaspoon of sugar from a bowl
C. disturbing a drop of water such that it breaks into smaller droplets
D. cutting a cake in half
Answers
Answer:
c
Explanation:
because your separating the atoms in the water
The appropriate model for nuclear fission is disturbing a drop of water such that it breaks into smaller droplets.
Nuclear fission refers to the disintegration of a large nucleus when it is bombarded with a small particle.
Usually, the protons in the nucleus repel each other strongly. Hence, as the atomic number of atoms continues to increase, this repulsion exceeds the nuclear attractive force causing the atom to disintegrate into smaller fragments called daughter nuclei when disturbed just as a drop of water such that it breaks into smaller droplets when disturbed.
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Find out how filtration is used in the human body ?
Answers
Answer:
Filtration is the removal or filtering of the toxins and waste products from the blood by the kidney. They are excreted from the body through urine. In general, filtration refers to the passing of a liquid through a filter. In the human body, the kidney functions as a filter.
Explanation:
Good luck :)
Please help me!! I will literally pay you if you do my one aleks topic due tomorrow!! I have multiple example problems. It’s same Q different numbers
Answers
Answer:
I'll do it if you give brainlyest and some points
Why are iron oxides in rocks evidence for prehistoric photosynthesis? (1 point)
o Iron oxides form when carbon dioxide, a reactant of photosynthesis, is in the atmosphere.
o Iron oxides form when cyanobacteria use carbon dioxide for photosynthesis.
o Iron oxides form when cyanobacteria produce oxygen via photosynthesis.
o Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
Answers
Answer:
Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
please answer this correctly
Answers
Answer:
B. basic
Explanation:
Because acidic is sour in test, salt is tasty in taste, and neutral neither bitter, tasty and nor sour
Calculate the heat produced by hydrolysis of 65 kg of ATP (the molecular weight of ATP is 507.18 g/mol).
Answers
The heat produced by hydrolysis of 65 kg of ATP is -6.8 kJ.
Let's consider the thermochemical equation for the hydrolysis of ATP.
ATP + H₂O ⇒ ADP + Pi ΔG = -57 kJ/mol
We will convert 65 kg of ATP to moles using its molecular weight (507.18 g/mol).
[tex]65 \times 10^{3} g \times \frac{1mol}{507.18g} = 1.2 \times 10^{2} mol[/tex]
57 kJ of heat are released by the hydrolysis of 1 mole of ATP. The heat released by the hydrolysis of 1.2 × 10² moles of ATP is:
[tex]1.2 \times 10^{2} mol \times \frac{(-57kJ)}{1mol} = -6.8 \times 10^{3} J = -6.8 kJ[/tex]
-6.8 kJ is the heat produced by hydrolysis of 65 kg of ATP.
Learn more: https://brainly.com/question/13056741
the modern periodic table is organized by increasing ______________ ___________.
Answers
Answer:
atomic number.
Explanation:
Answer:
Atomic number
Explanation:
The modern periodic table lists the elements in order of increasing atomic number (the number of protons in the nucleus of an atom).
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At this location, it is winter because the North Pole is tilted
Towards the sun
Away from the sun
Answers
Answer:
Away from the sun
Explanation:
winter
In the Northern Hemisphere, winter generally begins on December 21 or 22. This is the winter solstice, the day of the year with the shortest period of daylight. Summer begins on June 20 or 21, the summer solstice, which has the most daylight of any day in the year.
how do you determine the total number of Valence electrons that are used to make a particular lewis structure for a compound or an ion?
Answers
Answer:
The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized.
Explanation:
Hope it helps!
The variable that we change or test in an experiment is called the
A) Dependent variable
B) Independent variable
C) Constant
Answers
the variable that we change in an experiment is the Independent Variable. The dependent variable is the outcome and the constant is what remains the same throughout the experiment.
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Why should A chemical equation be balanced?
A. To show that the reactants are compounds
B. To show metals from nonmetals
C. To show ionic compounds
D. To show the law of conservation of mass
Please answer. No links please!!!
Answers
Polymers are large organic molecules that are made of
a.
cations.
c.
carbon and oxygen only.
b.
anions.
d.
repeating units.
Answers
Answer:
D) Repeating units.
Explanation:
Polymers are large macromolecules which are made up of many repeating structural units called monomers :)
♔♔what is tincture of iodine?what is it's use?✞☽☻☾✞
Answers
Answer:
Iodine tincture also known as weak iodine solution is a combination of iodine, sodium iodide, ethanol, and water. It is a disinfectant or antiseptic.
Applications:
When we get cuts and scratches it is applied. It is used mainly to clean the skin to prevent bacterial infections.
Explanation:
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What is the molar concentration of a solution prepared by dissolving 8.63 g of Ba(NO3)2 (molar mass = 261.35 g/mol) to a total volume of 250.0 mL?
What is the molar concentration of a solution prepared by diluting 10.0 mL of the solution in Question #1 to a total volume of 50.00 mL?
Answers
The concentration of the solution is 0.132 M, the concentration of the diluted solution is 0.026 M.
Given that;
number of moles = concentration × Volume
Concentration = number of moles/volume
But number of moles = mass/molar mass
mass = 8.63 g
Molar mass = 261.35 g/mol
Hence, number of moles = 8.63 g/261.35 g/mol = 0.033 moles
volume = 250.0 mL or 0.25 L
concentration = 0.033 moles/0.25 L = 0.132 M
For the second part of the question;
Using the dilution formula, C1V1 =C2V2
C1 = initial concentration = 0.132 M
V1 = initial volume = 10.0 mL
C2 = Final concentration = ?
V2 = Final volume = 50.00 mL
C2 = 0.132 M × 10.0 mL/ 50.00 mL
C2 = 0.026 M
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Which is a strong base?
A. HCl
B. NaOH
C. NH3
D. H3CO3
Answers
Answer:
c
Explanation:
Answer:
B
Explanation:
Which of the following steps is important to critical thinking?
implementing solutions
b utilizing facts
c. holding firm to conclusions
d answering questions
Please select the best answer from the choices provided
Answers
Answer:
b
Explanation:
edge 2022
Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 10 neutrons. Click on the “Templates” button template button and make use of the "stacked super/subscript" button button for entering stackes super/subscripts for entering the mass number and atomic number of the isotope.
Answers
Answer:
8 electróns
Explanation:
because the Last protons
can anyone send me the structure of iron ?
;
Answers
Answer:
HOPE IT HELPS
Explanation:
PLS MARK BRAINLIEST ^_^
Answer:
Here you go dear..
Here's the structure of iron you were talking about earlier..
(ㆁωㆁ)(◍•ᴗ•◍)
Explanation:
Hope it helps you..
Your welcome in advance..
(ㆁωㆁ)
calculate the pH of the following
A.0.02mol/L HCI
B. 0.1 mol/L NaOH
Answers
Answer:
A.
Explanation:
hope it helps
