Answer:
A covalent bond
hope this helps!
What temperature in Kelvin is 52 degree C?
Answer:
325 K
Explanation:
I'm not sure how to do this
Which energy resource produces the least amount of air pollution?
coal
natural gas
oil
hydropower
Answer:
hydropowered
Explanation:
took the test
Hydropower is the energy source that produces the least amount of air pollution. Therefore, the correct option is option D.
What is energy?Energy is The capacity or ability to do tasks, such as the ability to forcefully move an object. Energy can exist in a multitude of forms and can change from one to another, including thermal, mechanical, chemical, and nuclear energy. The flow of electric charges known as electrons is what generates electrical energy.
Energy is utilised to make a wide range of goods, power transportation, and power the appliances we use to heat and light our houses. The production of electricity is the main purpose of these various energy sources. All of these many energy sources contribute to the electrical power reserve that is then distributed to various locations via high-powered lines. Hydropower is the energy source that produces the least amount of air pollution.
Therefore, the correct option is option D.
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Jimmy's Chemical reaction/ Recipe for making Grilled chese sandwiches is given below: 1 slice of cheese + 2 slices of bread = 1 Grilled chese sandwich ( mole ratio is, 1:2:1) If Jimmy has the following amounts of ingredients (reactants/ reagents) : 10 slices of cheese 30 hslices of bread Answer the questions below in your submission: a) What is the limiting reagent/reactant? b) what is the excess reactant? c) True or false? The number of glilled chese sandwishes he can make is decided by the limiting reactant because it gets used up most.
Answer:
See explanation
Explanation:
We have been told in the question that the equation of the reaction is; 1 slice of cheese + 2 slices of bread = 1 Grilled cheese sandwich ( mole ratio is, 1:2:1) .
Then the reagents are 10 slices of cheese 30 slices of bread. It then follows that 10 slices of cheese should be combined with 20 slices of bread according to the mole ratio.
However, we have 30 slices of bread and 10 slices of cheese so cheese is the limiting reactant while bread is the reactant in excess.
Yes, the number of glilled chese sandwishes he can make is decided by the limiting reactant because it gets used up most.
The condition of having a small amount of gravity is called _____.
free fall
ISS
microgravity
Answer:
The effects of microgravity can be seen when astronauts and objects float in space. Microgravity can be experienced in other ways, as well. "Micro-" means "very small," so microgravity refers to the condition where gravity seems to be very small.
ANSWER: MICROGRAVITY
4. How many moles of H, would be
produced from 47 grams of H2SO4?
2A1 +3H,504 → Al2(SO4)3 +3H2
Answer:
0.48 moles of H₂ are produced.
Explanation:
Given data:
Number of moles of H₂ produced = ?
Mass of H₂SO₄ = 47 g
Solution:
Chemical equation:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
Number of moles of H₂SO₄ :
Number of moles = mass/molar mass
Number of moles = 47 g/ 98 g/mol
Number of moles = 0.48 mol
Now we will compare the moles of H₂SO₄ and H₂
H₂SO₄ : H₂
3 : 3
0.48 : 0.48
Thus, 0.48 moles of H₂ are produced.
Describe what happens to a liquid's molecules as it boils and changes into a gas.
Answer:
the particels becomes loose and wild, making gas happen when it is heated up
Liquids evaporate faster as they heat up and more particles have enough energy to break away. The particles need energy to overcome the attractions between them. At this point the liquid is boiling and turning to gas.
? + HCl -> FeCl2 + ?
CaO + ? -> Ca(NO3)2 + ?
? + Cu(OH)2 -> CuCl2 + ?
Answer:
1. Fe / H2
2. HNO3 / H2O
3. HCI / H2O
Answer:
1. Fe / H2
2. HNO3 / H2O
3. HCI / H2O
For each type of fuel shown in the table above (H2, CH4, O2), how much energy should
be added to the system in order to break the bond between the atoms forming the
molecule of the fuel?
Answer:
Explanation:
Chapter 4: Energy from Combustion The primary means of generating energy for human
endeavors is the combustion of fuels.
Coal - burned in power plants
Gasoline - burned in automobiles
Natural gas - heating
Heating oil – heating
.Propane, charcoal, wood, candles, …
Combustion (burning in air) releases the chemical energy,stored in the chemical bonds of the fuels.
BRAINLY PLZ
What type of climate is characteristic of temperate grassland
A) warm weather all year long
B) Deep, fertile soil
C) Low annual precipitation
D) Giraffes, zebras, and wildebeests
Answer:
I am expecting that is option is d is correct answer
Explanation:
because in the grassland some animals can live
Precipitation falls in these two forms: Solid / Liquid / Gas I’ll give you 77 and read the pdf
Answer:
It falls in Liquid and Solid.
Explanation:
Electrical energy is the amount of energy that an object contains due to kinetic energy
Answer:
The energy an object has due to its motion is called kinetic energy. Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass. The faster an object moves, the more kinetic energy it has.
Explanation:
How many moles of ammonia gas are produced from 3.6 moles of hydrogen gas and excess nitrogen gas?
Answer:
If so, the limiting reagent of Nitrogen would allow 16 moles of Ammonia to be produced.
Explanation:
How many grams of Cl2 are needed to produce 2.4 grams of NaCl?
2Na + Cl2 --> 2NaCl
The answer is 0.017110756386119. We assume you are converting between moles NaCl and gram. You can view more details on each measurement unit: This compound is also known as Sodium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NaCl, or 58.44277 grams.
Hope I helped :)
According to the stoichiometry of the given chemical equation, 1.45 g of Cl₂ are needed to produce 2.4 grams of NaCl.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
According to the given chemical equation, 70.906 g of chlorine gives 117 g sodium chloride, thus, 2.4 g of sodium chloride will be produced, when 2.4×70.906/117= 1.45 g of Cl₂ reacts.
Thus, according to the stoichiometry of the given chemical equation, 1.45 g of Cl₂ are needed to produce 2.4 grams of NaCl.
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CuSO4 +
KI →
Cul +
12 +
K2SO4
what best describes what forms in nuclear fission?
a. Two smaller, more stable nuclei
b. two larger, less stable nuclei
c. one smaller, less stable nucleus
d. one larger, more stable nucleus
Answer:
a. Two smaller, more stable nuclei
Explanation:
Answer:
a
Explanation:
took the quiz
An ideal gas does not exist.
Answer:
an ideal gas does not exist except as a conceptual notion, an ideal. Physicists and chemists idealized the behaviour of real gases so that they could explain these phenomena. Under conditions of low pressure and high temperature, all gases behave like real gases, even gases such as UF6 .
Answer:
True
Explanation:
How far does a car travel in 0.75 hr if it is moving at a constant speed of 88km/hr?
Answer:
66 km.
Explanation:
88 km / 1 hour = 66 km / 0.75 hours.
You need to just multiply 0.75 by 88.
The answer is 66 km.
You have been given a choice of four elements; Lithium, Magnesium, Sulfur, and Bromine. You must decide which two elements would form a compound that has one atom of the metallic atom and two of the non-metallic atom in the final neutral compound. Which choice lists the two atoms with the correct formula for the compound?
A.
Magnesium and Sulfur; MgS2
B.
Lithium and Bromine; LiBr2
C.
Lithium and Sulfur; Li2S
D.
Magnesium and Bromine; MgBr2
The compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
The periodic table has been the arrangement of the elements with increasing atomic number and similarity in the reactivity.
The metals in the periodic table are elements that has been able to accept electrons, and nonmetals are the elements in the table that loses electrons to attain the stable noble gas configuration.
Formation of a neutral compoundThe metal and nonmetal form the neutral compound when there has been the formation of stable compound with the complete configuration.
The magnesium and lithium has been metals, while sulfur and bromine are nonmetals. Bromine has been the element of group 17. It has been able to gain an electron. Sulfur has been the nonmetal and required 2 electrons to complete its octet.
Lithium has been the metal with one valence electron, and magnesium with 2 valence electrons.
The neutral compound to be formed has been consisted of one metal with 2 valence electrons, and 2 nonmetals with 1 valence electrons.
Thus, the compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
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Does the following compound contain a polyatomic ion? VF5
Yes
No
Answer:
the answer is yes
Explanation:
I don't no
find the product of (x+a)(x-a)
Answer:
x^2 - a^2
Explanation:
On a cold, winter day, Sheena rubs her hands together to warm them up. How could Sheena actions be used to explain the Law of Conservation of Energy?
Answer:
When she rubs her hands together, it causes heat or friction
How many grams of Na2SO4 can be produced from 423.67 g of NaCl?
Mass of Na2SO4= 514.18 grams
Further explanationGiven
423.67 g of NaCl
Required
mass of Na2SO4
Solution
Reaction
2NaCl + H2SO4 → Na2SO4 + 2HCl
mol NaCl :
= 423.67 g : 58.5 g/mol
= 7.24
From the equation, mol Na2SO4 :
= 1/2 x mol NaCl
= 1/2 x 7.24
= 3.62
Mass Na2SO4 :
= 3.62 mol x 142,04 g/mol
= 514.18 grams
POV: You buy a composite cup at the store. Explain the reason for your decision.
I think this is chemistry I have no clue.
Answer:
i bought it cuz i need a cup?
Explanation:
Answer:
Best chemistry ever tho
Explanation:
LOL
why is it important for the appendages of an arthropod to be joined
Answer:
you mean "jointed." jointed appendages give arthropods much greater movement flexibility and range.
Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)
Answer:
The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.
Explanation:
7. What is a meteorite? It is a
A. dim meteor
B. bright meteor
C. meteoroid that lights up
D. remains of meteoroids that hit the Earth
8. What is a comet? It is a/an
A. rock from Mars
B. class of smaller inner solar system bodies that orbit around the sun
C. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail
when it travels close to the sun
D. natural object from small to huge that originates in space and survives the
impact on the earth's surface
9. What composes silicate?
A. silicon, oxygen, and at least one metal
B. silicon, carbon, and at least one metal
C. silicon, methane and a rock
D. iron, nickel, and argon
10. Why do scientists study comets?
A. They are valuable minerals.
B. They could provide Earth with rocks.
C. They can help make the Earth a habitable planet.
D. They provide information how the Earth obtained liquid water.
11. Why would global temperature of the Earth drop when struck by a massive
asteroid?
A. The resulting cloud would block out sunlight.
B. The low temperature of asteroid would chill the oceans.
C. The impact would move the Earth farther from the Sun.
D. The ice in the asteroid would increase the Earth's reflective power.
12.When objects strike a surface of a planet, they leave a deep impression on the
surface called
A. canyon
B. crater
C. plateau
D. pothole
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based
on this statement, where did the meteoroids originate?
A. Asteroid Belt
B. Mars
C. Moon
D. Sun
7. Remains of meteroids that hit down the earth.
8. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
9. silicon, oxygen and at least one metal.
10. They provide information how the Earth obtained liquid water.
11. The resulting cloud would block out sunlight.
12. crater
13. Asteroid Belt
7. A meteorite is remains of meteoroids that hit down the earth.
8. A comet is an icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
What are meteoroids ?The term meteoroids is defined as the small rock pieces that revolve around the Sun.They typically consist of gases, ice particles, and dust.
9. The composes silicate are silicon, oxygen and at least one metal.
10.The scientists study comets because they provide information how the Earth obtained liquid water.
11. The global temperature of the Earth drop when struck by a massive
asteroid because the resulting cloud would block out sunlight.
12. When objects strike a surface of a planet, they leave a deep impression on the surface called crater.
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based on this statement, the meteoroids originate in Asteroid Belt.
Thus, A meteorite is remains of meteoroids that hit down the earth.
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CAN SOMEONE PLZ HELP ME ON THIS
Answer:
Q1. C
Q2.ring number 1 is 2
ring number 2 is 8 and
ring number 3 is 18
Q3. p can contain 6 electrons max
and d can contain 10 electrons max
Q4. D
What is the density of an
object that has a mass of
120 g and volume of 5 ml?
The density of an object ρ = 24 g/ml
Further explanationGiven
mass of an object = 120 g
volume = 5 ml
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Input the value :
ρ = 120 g : 5 ml
ρ = 24 g/ml
Mg2OH has how many unique elements?
A.
4
B.
2
C.
3
D.
5
Answer:
Magnesium hydroxide has 3 unique elements.
Explanation:
Long story short, 2 is the balancing compound in structure to make up hydroxide, therefore 1 compound would be left to create Mg(2O)H.
(This is only an opinion of mathematical science to me, I don't have complete understanding of this subject either, good luck.)