If fluorine 20 undergoes beta decay , what will it become ?
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What do the formulas for table salt, NaCl, and water, H2O indicate about the compounds?
What is the formula mass for fe(no3)3
Which element has 32 protons in its nucleus? phosphorus cobalt germanium sulfur
During nuclear fission, great amounts of energy are produced from____. A. particle accelerators B. tremendous amounts of mass C. a series of chemical reactions D. very small amounts of mass.
b. silver
c. lead
d. iron?
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In order to join stained glass pieces together lead is used
The lead is preferred material as
a) due to its soft and flexible nature we can easily cut and mold it according to the application area
b) Compared to other options lead is less costly and is long lasting
Thus lead finds its application in came glass work
Which statement describes what occurs during
this reaction?
(1) Energy is absorbed as a bond is formed.
(2) Energy is absorbed as a bond is broken.
(3) Energy is released as a bond is formed.
(4) Energy is released as a bond is broken.
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Answer: The correct option is 2.
Explanation: We are given in the question that Fluorine molecule is dissociating into two Fluorine atoms. Equation for the following is given by:
In a chemical reaction if the energy is written at the reactant side, the energy is being absorbed and if the energy is written at the product side, the energy is being released.
From the given chemical equation, the energy is written at the reactant side, so the energy is being absorbed by the reactants in order to break the bond between molecule to form 2 individual Fluorine atoms.
Hence, the correct option is 2.
B. Minerals are deposited into the soil through erosion.
C. The surface area of rocks decreases because of acid rain.
D. Materials are transported through erosion and are dropped in another location.
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Which of the following statements describes the process of deposition?Deposition can be best described as materials being transported through erosion that are dropped in another location, so the answer is D.
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Answer:
The net charge of 1.3 g nugget of pure gold after 1.68% of its electrons are removed is 559 C
Explanation:
When an atom gains electrons it becomes negatively charged. Conversely, when it looses electrons the atoms becomes positively charged thus
To solve this question, we rely on the relationship between the nmber of particles present in a given mass of an atom, Avogadro's number and number of moles, n
The given variables are
mass of pure gold nugget = 1.30 g
Quantity of electrons removed = 1.68% of electrons present in the gold sample
Molar mass of gold = 197 g/mol
Avogadro's number = 6.02 × 10²³ atoms/mole
qc = one electron charge = -1.06 × 10⁻¹⁹ C/electron
Electrical charge of gold nugget = 0 C
Number of electrons in one gold atom = 79 electrons
Solving for the number of prticles or gold atoms in 1.3 grams of gold we get
n mass/(molar mass) = 1.3/197 moles of gold = 0.0066 moles
number of particles in 0.0066 moles of gold N = n× = 0.0066 × 6.02 × 10²³ = 3.97 × 10²¹ atoms
since 79 electrons are present per particle we have
3.97 × 10²¹ × 79 = 3.14 × 10²³ electrons
quantity of elecrtrons removed = 1.68% of 3.14 × 10²³ electrons =1.68/100 × 3.14 × 10²³ electrons = 0.0168 × 3.14 × 10²³ electrons = 5.3 × 10²¹ electrons
The net charge of 5.3 × 10²¹ electrons = 5.3 × 10²¹ electrons × -1.06 × 10⁻¹⁹ C/electron =
5.59 × 10² C = 559 C
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Answer:
Everything that has mass and takes up space is matter. Every day, you encounter phenomena that either don't have mass or don't take up space. They are non-matter. Basically, any type of energy or any abstract concept is an example of something that is not matter.
An apple.
A person.
A table.
Air.
Water.
A computer.
Paper.
Iron.
hope this helped you