Data analysis is a process of inspecting, cleansing, transforming and modeling data with the goal of discovering useful information, informing conclusions and supporting decision-making
Is a television remote ac or dc
a. In the complete reaction of 22.99 g of sodium
with 35.45 g of chlorine, what mass of sodium
chloride is formed?
Answer : 58.44 g
Further explanationThe reaction
[tex]\tt Na+Cl\Rightarrow NaCl[/tex]
mole ratio :
Na : Cl : NaCl = 1 : 1 : 1
Molar mass of Na : 22,989769 g/mol = 22.99 g/mol
Molar mass of Cl : 35,453 g/mol= 35.45 g/mol
Molar mass of NaCl : 58,44 g/mol
Let's check the mol for reactant (Na and Cl) and product(NaCl)
mol of Na :[tex]\tt mol=\dfrac{22.99}{22.99}=1[/tex]
mol of Cl :[tex]\tt mol=\dfrac{35.45}{35.45}=1[/tex]
Then the reactants are completed reacting because it matches the mole ratio, which is 1: 1
so that the mole of the product can be determined from the mol Na or Cl, which is 1
mass of NaCl :[tex]\tt =\dfrac{mol~NaCl}{mol~Na}\times MW~NaCl\\\\=\dfrac{1}{1}\times 58.44\\\\=\boxed{\bold{58.44~g}}[/tex]
Which has the larger ionization energy carbon or nitrogen?
Answer:
nitrogen has an ionization energy of 1400 kJ/mol while carbon has an energy of 1086 kJ/mol. Therefore as expected, nitrogen has higher energy than carbon.
The atomic number of Neon is 10. The atomic number of Calcium is 20.
Compared with a mole of neon, a mole of calcium contains
Answer:
an equal number of atoms
Explanation:
One mole of a substance contains the Avogadro's number of elementary entities (Atoms, molecules, ion, etc).
Hence, one mole of calcium and one mole of neon will contain exactly the same number of atoms which is 6.02 *10^23 atoms. This is known as the Avogadro's number.
Comparing 1 mole of Neon to 1 mole of calcium, both substances contains
6.0221 x 10²³ atoms.
The atomic number of neon is 10 and the atomic number of calcium is 20.
The atomic number of an atom is the number of proton of an atom.
1 mole of Neon can be represented as follows
Ne
1 mole of Calcium can be represented as follows:
Ca
Avogadro's number, or Avogadro's constant, is the number of particles found in one mole of a substance.
This experimentally determined value is approximately 6.0221 x 10²³ particles per mole.
This means 1 mole of any substance contain 6.0221 x 10²³ atoms.
Comparing 1 mole of Neon to 1 mole of calcium, both substances contains
6.0221 x 10²³ atoms.
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What is the formula for finding force?
Plz help!
What is 1 item that is an element?
Give an example of how the 1 item is an element
Answer:
its a
Explanation:ok
Elements in Group 18 are known
as the noble gasses. What makes
these elements unlikely to react?
A the number and placement of the
protons
B the number of isotopes of the atom
C the number and placement of the
electrons
D the number of neutrons in the nucleus
of the atom
Answer:
C the number and placement of the electrons
Explanation:
Elements react with one another because they want to achieve a full valence shell of electrons. The noble gases already have a full valence shell of electrons, so they are unlikely to react with other elements.
does mass change when you add alka seltzer to water??
Answer:
It produces carbon dioxide when an Alka-Seltzer tablet dissolves in water. In the bath, the carbon dioxide dissolves and then emerges as a gas from the solution.
This carbon dioxide gas has mass, but it escapes from the container and diffuses into the atmosphere because it is a gas.
The mass loss from the container is directly calculated by the analytical balance.
5. Which of these elements has the greatest atomic radius? *
Be
Mg
Ra
Ba
An amide may be produced by reacting an acid chloride with
Answer:
An amide may be produced by reacting an acid chloride with ammonia.
Answer:
ammonia
Explanation:
An amide may be produced by reacting an acid chloride with ammonia. An amide may be produced by reacting an acid chloride with ammonia.
What is the nuclear equation for californium-253 formed by alpha emission?
Answer:
Explanation:
During α-decay, an atomic nucleus emits an alpha particle. ... Note that the sum of the subscripts (atomic numbers or charges) is the same on each side of the equation. Also, the sum of the superscripts (masses) is the same on each side of the equation.Jul 29, 2014
The amount of stored chemical energy is what determines the temperature of a
substance. (1 point)
True
Talse
Answer:
False
Explanation:
Temperature is a measure of the average kinetic energy of the particles of a substance.
In the reference image there is a pie graph illustrating the composition of Earth’s atmosphere. What is the most abundant gas making up Earth’s atmosphere? How much of Earth’s atmosphere is comprised of oxygen
Answer:
Explanation:its catbony
The most abundant gas making up Earth’s atmosphere is nitrogen and 21% of of Earth’s atmosphere is comprised of oxygen.
What is atmosphere?An atmosphere meaning 'vapour, steam', and is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.
A stellar atmosphere is the outer region of a star, which includes the layers above the opaque photosphere; stars of low temperature might have outer atmospheres containing compound molecules.
The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, the solar wind, and cosmic rays to protect organisms from genetic damage. The current composition of the atmosphere of the Earth is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms.
Learn more about atmosphere,here:
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This diagram shows a marble with a mass of 3.8 grams (g) that was placed into 10 milliliters (mL) of water.
Complete Question:
This diagram shows a marble with a mass of 3.8 grams (g) that was placed into 10 milliliters (mL) of water. Using the formula V M D = , what is the density of the marble?
(See attachment for full diagram)
Answer:
1.27 g/cm³
Explanation:
First, find the volume of rock:
Volume of rock = volume of water after rock was placed - volume of water before rock was placed
Volume of rock = 13 - 10 = 3ml
Density of rock = grams of rock per 1 cm³
Note: 1 ml = 1 cm³
Let x represent amount of rock per 1 cm³
Thus,
3.8g = 3 cm³
x = 1 cm³
Cross multiply
1*3.8 = 3*x
3.8 = 3x
3.8/3 = 3x/3
1.27 = x
Density of rock = 1.27 g/cm³
Answer:tbh idek i have a diff one
Explanation: