Answer:
A.an endothermic reaction
2. Write balanced chemical reactions for the following: (1 point each, 4 points total) a. Cobolt-60 undergoes beta decay b. Americium-241 undergoes alpha decay c. Copper-60 undergoes positron emission d. Gallium-66 undergoes electron capture
A nuclear reaction must lead to changes in the nucleus of an atom.
What is a nuclear reaction?The term nuclear reaction refers to a reaction in which a new nucleus is formed. The following are the nuclear reactions;
a) 60/27Co -----> 60/28 Ni + 0/-1 e
b) 241/95 Am ------> 237/93Np + 4/2He
c) 60/29 ----> 60/28 Ni + 0/1 e
d) 66/31 Ga + 0/-1 e -----> 66/30 Zn
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is 0.2 liters of soda the same measurement as 2000 grams of soda
Answer:
0.2 liters = 200 grams
Explanation:
G = L x 1000
G= 0.2 x 1000
G= 200g
Anyone can help me with this. I’ll mark u brainliest
The answer to the question is Ammonia.
Will give brainliest!
How many moles of carbon dioxide are produced when 4.6 mol of oxygen reacts?
How many molecules of C3H7OH will react with 4.6 L of oxygen?
The given questions belongs to the concept of limiting reagent.
The number of moles of carbon dioxide produced when 4.6 moles of dioxygen reacts is 4.6 moles.
What is Limiting Reagent ?The limiting reagent (or limiting reactant or limiting agent) in a chemical reaction is a reactant that is totally consumed when the chemical reaction is completed.
Given ;
Moles of Oxygen = 4.6
To find;
Moles of Carbon di oxide = ?
The reaction that forms [tex]CO_2[/tex] is as follows:
C(s) + [tex]O_2[/tex](g) --> [tex]CO_2[/tex](g)
This means that [tex]O_2[/tex] is consumed and [tex]CO_2[/tex] is produced in a 1:1 ratio.
If we consume 4.6 mol [tex]O_2[/tex], then we produce 4.6 mol [tex]CO_2[/tex] .
Hence, 4.6 mol [tex]CO_2[/tex] are produced when 4.6 mol of oxygen reacts.
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Iron has a density of 7.86 g/cm3 . Calculate the volume (in dL ) of a piece of iron having a mass of 4.89 kg . Note that the density is provided in different units of volume and mass than the desired units of volume ( dL ) and the given units of mass ( kg ). You will need to express the density in kg/dL ( 1 cm3 = 1 mL ) before calculating the volume for the piece of iron.
Answer:
the answer is 5 m/s² and you can also divide jt by 2 to get its fully ans
Balanced chemical equation for octane + oxygen =carbon monixide + water
2C8H18 + 17O2 → 16CO + 18H2O
If 60g of m combines with 24g of oxygen what would be the empirical formula of the oxide (o=16,m=120)
The empirical formula of the oxide-containing 60 g of M and 24 g of oxygen is MO₃.
What is an empirical formula?A chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule [tex]CH_2O[/tex] is the empirical formula for glucose.
Data obtained from the question
M = 60 g
O = 24 g
Empirical formula =?
How to determine the empirical formula
Divide by their molar mass
M = 60÷120 = 0.5
O = 24 ÷16 = 1.5
Divide by the smallest
M = 0.5÷0.5 = 1
O = 1.5 ÷0.5 = 3
Thus, the empirical formula of the oxide is MO₃
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why are mercury venus earth and mars called the terrestrial planets
Answer:
The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma. The terrestrial planets are the four innermost planets in the solar system.
hope to be helpful
Answer:
they have a compact, rocky surface like Earth's terra firma.
Explanation:
Rico and Bree are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree’s potato has a high temperature. What is the difference between the molecules of the two potatoes?
Answer:
There is no difference because both potatoes are made of the same type of molecules.
If 23 atoms of hydrogen are present in the reactants, how many atoms of hydrogen will have to be present in the products?
Answer:
23
Explanation:
law of conservation of mass
quizlet
how many moles are in 1.20 times 10^25 atoms of phosphorus
19.927 moles are in 1.20 times [tex]10^{25}[/tex] atoms of phosphorus.
What are moles?A mole is defined as 6.02214076 ×[tex]10^{23}[/tex] of some chemical unit, be it atoms, molecules, ions, or others.
1 mole of any substance contain Avogadro's number of molecules so we can calculate the number of moles by dividing the provided number of atoms over Avogadro's number to obtain the number of moles .
Moles= [tex]\frac{Atoms}{\;Avogadro's \;number }[/tex]
Moles= 1.20 X [tex]10^{25}[/tex] atoms ÷ 6.022 X [tex]10^{23}[/tex]
= 19.927
Hence, 19.927 moles are in 1.20 times [tex]10^{25}[/tex] atoms of phosphorus.
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calcium +oxygen in chemicals formulars
Answer:
CaO
Explanation:
Calcium has 2+ charge
Oxygen has 2- charge
Chemicals formula of calcium + oxygen :
[tex] \: \: \: \: \: \: \: \: \: \red{ \star}\underline{ \underline{ \boxed{Ca + O_2 }}}[/tex]
The ___________ is a measurement of the amount of electrical push, or force, in a circuit.
Answer: Voltage, measured in volts
Determine the compound type for the following formulas
C₁₂H₂₂O₁₁ , Mg(OH)₂ , H₂O ,Cu₃Zn₂ , Au are covalent compound,
Ionic Compound ,covalent compound ,metallic compound, metal respectively.
The missing question is
Determine the compound type for the following formulas
C₁₂H₂₂O₁₁ , Mg(OH)₂ , H₂O ,Cu₃Zn₂ , Au
What are the different types of compound?The compounds by the exchange of electrons are called Ionic Compound, Those formed by sharing of electrons is called a covalent compound.
It is given in the question to determine the type of the compounds
1. C₁₂H₂₂O₁₁: It is a covalent compound
2. Mg(OH)₂: It is an Ionic Compound
3. H₂O: It is a covalent compound
4. Cu₃Zn₂: It is a metallic compound
5.Au: It is a metal
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Which of the objects in the table has the most gravitational potential energy? Explain your answer.
Answer:
Bowling Ball
Explanation:
The bowling ball has the highest gravitational potential energy because the height at which it will fall is the highest of the rest objects on the table.
What is the oxidizing agent in the following reaction? Cr2O3(2) + Al(s) > Cr(s) + Al2O(s)
A. Cr(s)
B. Cr+2(aq)
C. Cr2O3aq)
[tex]Al[/tex] is a reducing agent, [tex]Cr _2O _3[/tex] is an oxidizing agent.
What is an oxidizing agent?An oxidizing agent is a substance that causes oxidation by accepting electrons.
Al is a reducing agent, [tex]Cr _2O _3[/tex] is an oxidizing agent.
Hence, option C is correct.
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I want to make sure of my understanding
The law of definite proportions it is made of the same elements combined with each other, but the compound produces one compound
But the law of multiple proportions
They are made of the same elements combined with each other, but the compound produces more than one compound
right?
Answer:
yes it is correct if you want the full definition pls reply
Explanation:
and also mark me the brainliest
PLEASE HELP
The actual yield of a product in a reaction was measured as 4.20 g. If the theoretical yield of the product for the reaction is 4.88 g, what is the percentage yield of the product?
82.6%
84.2%
86.1%
88.0%
Answer: 86.1
Explanation: because i did this in 7th grade
reference the following attachment
The number of molecules of gases in each of the 3 vessels is the same.
Number of molesThe first vessel contains 2g of [tex]H_2[/tex] gas:
Number of molecules in 2 g = 2/2 = 1 mole
The second vessel contains 32 g of [tex]O_2[/tex] gas:
Number of molecules = 32/32 = 1 mole
The third vessel contains 44 g of [tex]CO_2[/tex] gas:
Number of molecules = 44/44 = 1 mole
Thus, the 3 vessels contain the same number of moles of gases.
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Sulfuric acid is a strong acid. Write the balanced molecular equation for the reaction of aqueous sulfuric acid and aqueous potassium hydroxide. How many molecules of water are produced?
five
three
two
four
one
Answer:
one
Explanation:
I hope this will help you
Solid sodium reacts violently with water, producing heat, hydrogen, gas, and sodium hydroxide. How many molecules of hydrogen gas are produced when 27.5g of sodium are added to water? Show your work
.598 moles of H2
Find the balanced equation of the reaction
2Na + 2 H2 0 ====> 2 Na OH + H2
27.5 gm of Na is 27.5/ 22.989 =1.196 moles
from the equation, each mole of Na produces 1/2 mole of H2
1.196 moles * 1/2 = .598 moles of H2
Moles of sodium
Given mass/molar mass27.5/231.196mol2 mol Na produces 1 mol H2
1 mol produces 0.5mol H2
1.196 mol produces 0.598mol
No of molecules
0.598×6.023×10²³3.6×10²³moleculesQuestion 3 of 25
What is the correct electron configuration for an element with 5 electrons in
the third energy level?
A. 1s22s22p63s¹3p³3d¹
B. 1s22s22p 3s23p³
C. 1s22s22p63s23p5
Answer:
B.) 1s²2s²2p⁶3s²3p³
Explanation:
The highest energy orbital that elements in the third period occupy is either 3s or 3p. Because there are 5 electrons, the 3s orbital is completely filled (with 2 electrons) and the 3p orbital is half-filled (with 3 electrons).
CORRECT ANSWER GETS BRAINLIST
Answer:
C.) Temperature inversion
Explanation:
A temperature inversion occurs when cool air becomes trapped underneath a layer of warm air.
Which force is equal but opposite to the one shown?
A. The normal force that the air applies to the kitten
B. The force that the kitten applies to Earth
C. The force of gravity that acts on the kitten
D. The force that the branch applies to the kitten
The force equal but opposite to the one shown is : ( D ) The force that the branch applies to the kitten
Opposite and equal forcesThe force of gravity/weight of an object is equal and opposite to the reactive force because it cancels the effect of the weight of the object on the surface. In option D the force that the branch applies to the kitten resting on it is equal and opposite to the weight of the kitten.
Hence we can conclude that The force equal but opposite to the one shown is The force that the branch applies to the kitten.
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Your questio lacks the diagram but I have provided a general answer within the contest of your question
write the balanced equation fr this chemical reaction _Mg + _O2 -> _MgO
Answer:
_2Mg + _O2 --≥2MgO this is balanced
EASY QUESTION PLEASE HELP I JUST NEED REASURANCE Is mass conserved when you fry an egg and it undergos a chemical change?
Answer:
Yeah chemical change occurs when you fry an egg since the whites harden and change shape in a way. Mass is conserved since it doesn't change.
What is the Cassini-Huygens spacecraft? What is its mission? Describe some of its features.
Cassini-Huygens spacecraft is a joint NASA/ESA/ASI mission to know about the Saturn planet.
What is the Cassini-Huygens spacecraft and its mission?Cassini-Huygens is a joint NASA/ESA/ASI mission in which the spacecraft orbited Saturn in order to do survey of the ringed planet and its moons. The main objectives of the Cassini-Huygens mission are to analyze the composition and atmosphere of Saturn.
So we can conclude that Cassini-Huygens spacecraft is a joint NASA/ESA/ASI mission to know about the Saturn planet.
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n a semiconductor, the bonding molecular orbitals that contain electrons are referred to as the ________, while the antibonding orbitals that are completely empty are referred to as the ________. single bond, antibond conduction band, valence band valence band, conduction band n-type, p-type p-type, n-type
Answer:
In a semiconductor, the bonding molecular orbitals that contain electrons are referred to as the valence band, while the antibonding orbitals that are completely empty are referred to as the conduction band.
The conduction band occupies a higher energy level than the valence band. The band gap is what separates the two orbitals.
How many grams of magnesium
hydroxide are present in 7.5 x 1023
formula units Mg(OH)2?
7.5 x 1023 fun
1 mole
58.32 g
6.02 x 1023 fun
1 mole
[?] g Mg(OH)2
Answer:
73 g Mg(OH)₂
Explanation:
To find the mass of magnesium hydroxide, you need to (1) convert formula units to moles (via Avogadro's number) and then (2) convert moles to grams (via molar mass). Remember to arrange the conversions/ratios in a way that allows for the cancellation of units. The desired unit should be in the numerator. The final answer should have 2 significant figures because the given value (7.5 x 10²³) has 2 sig figs.
Avogadro's number:
6.02 x 10²³ formula units = 1 mole
Molar Mass (Mg(OH)₂):
58.32 g/mol
7.5 x 10²³ units Mg(OH)₂ 1 mole 58.32 g
----------------------------------- x ---------------------------- x -------------------- =
6.02 x 10²³ units 1 mole
= 73 g Mg(OH)₂
what is the main reason why hurricanes die when they enter the north atlantic ocean?
Answer:
it's because they need warm ocean temperature/water
