Answer:
d
Explanation:
The sirculation of airin the troposhere du
Copper carbonate always has 5.3 parts copper to 4 parts oxygen to 1 part carbon. In other words, the ratio of copper to oxygen to carbon is 5.3:4:1. The picture shows that in a 103g sample of copper carbonate, there are 53g of copper, 40g of oxygen, and 10g of carbon. A sample of copper carbonate was found to contain 15.9g of copper. How many grams of copper carbonate were in the sample? Use the ratio of copper to oxygen to carbon.
Answer:
Atoms are rearranged during chemical reactions, and are not lost or gained. Chemical reactions can be represented using equations. Catalysts speed up reactions without being used up.
Part ofChemistryChemical reactions and tests
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Thermal decomposition
Some compounds break down when heated, forming two or more products from one reactant. This type of reaction is called thermal decomposition.
Many metal carbonates can take part in thermal decomposition reactions. For example, copper carbonate breaks down easily when it is heated:
copper carbonate → copper oxide + carbon dioxide
CuCO3 → CuO + CO2
Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction. The carbon dioxide produced can be detected using limewater, which turns milky.
Green copper carbonate is heated in a test tube. It changes to black copper oxide and gives off carbon dioxide gas.
Copper carbonate is easily decomposed by heating
Other metal carbonates decompose in the same way. Here are the equations that represent the thermal decomposition of calcium carbonate:
calcium carbonate → calcium oxide + carbon dioxide
CaCO3 → CaO + CO2
Thermal decomposition is an example of an endothermic reaction, a reaction that gains energy from the surroundings. This is why thermal energy must be supplied constantly for the reaction to keep going. Note that some other reactions are exothermic reactions – they give out energy to their surroundings.
please mark as brainliest
From the ratio of copper to carbon and oxygen in copper carbonate, the mass of copper carbonate in grams containing 15.9 of copper is 30.9 g.
What is copper carbonate?
Copper carbonate is an ionic compound having the formula CuCO₃. It is a cyan colored water insoluble solid which can be converted to oxides. Copper carbonate is used as a pigment in paints and varnishes.
It is given that the ratio of copper to oxygen to carbon in copper carbonate is always 5.3 : 4 : 1. Thus, for a 10.3 gram of copper carbonate the mass of copper will be 5.3 g and mass of oxygen and carbon is 4 and 1g respectively.
Given that a sample of copper carbonate contains 15.9 g of copper. Let x g be the mass of copper carbonate. The sum of ratios of copper, oxygen and carbon is 10.3. Thus it is written as:
5.3 × X/ 10.3 = 15.9 g.
5.3 X = 163.7 g.
X = 30.9 g.
Therefore, the mass of copper carbonate in grams containing 15.9 of copper is 30.9 g.
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The following table lists the speed of sound in various materials. Use this table to answer the question.
Substance Speed (m/s)
Glass 5,200
Aluminum 5,100
Iron 4,500
Copper 3,500
Salt water 1,530
Fresh water 1,500
Mercury 1,400
Hydrogen at 0°C 1,284
Ethyl Alcohol 1,125
Helium at 0°C 965
Air at 100°C 387
Air at 0°C 331
Oxygen at 0°C 316
How long would it take for a sound impulse to travel through a copper rod 25 kilometers long?
0.071 sec
7.1 sec
140 sec
0.14 sec
Answer:
7.1 sec
Explanation:
7.1 sec it take for a sound impulse to travel through a copper rod 25 kilometers long. 7.1 sec it take for a sound impulse to travel through a copper rod 25 kilometers long. This answer has been confirmed as correct and helpful.
pls mark me as brainliest trust me
Answer:
The answer would be 7.1 i think but this was already answerd so just saying that we both have gotten the same answer. But no matter what there is always a chanse that you can mess up.
In what form is radiation emitted from the earth's surface back into the atmosphere?
As light
As greenhouse gases
As gamma rays
As heat
What is causing the Earth's climate to change? (Choose the 2 correct answers)
Greenhouse gases.
Burning fossil fuels.
The Earth's climate isn't changing.
Hot house gases.
Answer:
green house gases and burning fossil fuels
Ag + HCl --> ?
a) No reaction
b) AgCl + H2
c) AgCl + H2O
PLEASE HELP
Answer:
Ag + HCl = AgCl + H2 | Chemical reaction and equation.
Explanation:
How can global warming cause sea levels to rise? Choose the best answer.
By causing it to rain more often
By melting glaciers and polar ice caps
By increasing the number of undersea volcanic
eruptions
By creating bigger and more powerful hurricanes
Which of sully's traits are
yes, their traits are
and
sometimes
According to these graphs, which city has the most annual rainfall?
Barrow, Alaska
Reno, Nevada
Cannot tell from the information given
Both cities have the same amount of rainfall
Im lost pls help me answer this and don't send me Links its annoying
Answer:
I think its 40 but Im not sure
hope this helps
have a good day
Explanation:
What might happen if the greenhouse effect didn't exist?
It would be too cold for humans to survive on the earth
The earth's temperature would be much more comfortable
The sun's rays would never reach the surface of the earth
The earth wouldn't have an atmosphere
What is the difference between weather and climate? (Choose the 2 correct answers)
Climate changes over short periods of time and weather changes over long periods of time.
Climate is the average weather over a period of time and weather is a short-term change.
Climate is changes in temperature, clouds, rain, or snow.
Weather is changes in temperature, clouds, rain, or snow.
Answer:
Climate is the average weather over a period of time and weather is a short-term change.
Weather is changes in temperature, clouds, rain, or snow
If the force of the soccer player’s head on the ball is 1.5 N upward, what is the force of the ball on the player’s head?
a. 0 N
b. 1.5 N
c. 3.0 N
Answer:
-1.5 N because 1.5 N would be upwards and -1.5 N would be downwards
What changes when you add a neutron to an atom?
a.
just the mass changes
b.
just the charge changes
c.
just the element changes
d.
the mass, the charge, and the element
What's one major difference between the earth's greenhouse effect and an actual greenhouse?
Heat escapes from a greenhouse more easily than it does from Earth's atmosphere
The glass in a greenhouse traps heat, while greenhouse gases in the atmosphere absorb and recycle heat
Actual greenhouses are cold in winter, while the
greenhouse effect has led to warm winters across the
earth
There is no significant difference; both work pretty much the same way
Answer:
yong ona po
Explanation:
What's one major difference between the earth's greenhouse effect and an actual greenhouse? The glass in a greenhouse traps heat, while greenhouse gases in the atmosphere absorb and recycle heat.
pls pa brainlies po
Please give an explanation for brainiest
Answer:
Neon
Explanation:Neon is stable as it has a full octet or valence shell of 8 electrons. If you are in year 11 or beyond, this will change, but I assume that you are still touching the surface of chemistry and learning that all noble gases (last group on the periodic table) have a full valence electron and "are happy," thus stabl
Which answer BEST shows an animal's adaptation to the tropical rain forest? *
A. camoflauge in a tree frog
B. the long neck of a giraffe
C. an elephants long trunk
D. migration of birds in the winter
Based on the diagram above, nitromethane has a chemical formula of CH
______ _____
NO LINK ANWERS
This is a fill in the blank question, there is no word bank
Answer:
Nitromethane, sometimes shortened to just Nitro, is an organic compound with the chemical formula CH
3NO
2. It is the simplest organic nitro compound. It is a polar liquid commonly used as a solvent in a variety of industrial applications such as in extractions, as a reaction medium, and as a cleaning solvent. As an intermediate in organic synthesis, it is used widely in the manufacture of pharmaceuticals, pesticides, explosives, fibers, and coatings.[12] Nitromethane is used as a fuel additive in various motorsports and hobbies, e.g. Top Fuel drag racing and miniature internal combustion engines in radio control, control line and free flight model aircraft.
Explanation:
Preparation
Nitromethane is produced industrially by combining propane and nitric acid in the gas phase at 350–450 °C (662–842 °F). This exothermic reaction produces the four industrially significant nitroalkanes: nitromethane, nitroethane, 1-nitropropane, and 2-nitropropane. The reaction involves free radicals, including the alkoxyl radicals of the type CH3CH2CH2O, which arise via homolysis of the corresponding nitrite ester. These alkoxy radicals are susceptible to C—C fragmentation reactions, which explains the formation of a mixture of products.[12]
Laboratory methods
It can be prepared in other methods that are of instructional value. The reaction of sodium chloroacetate with sodium nitrite in aqueous solution produces this compound:[13]
ClCH2COONa + NaNO2 + H2O → CH3NO2 + NaCl + NaHCO
Is this true or false?
yes its true
as from both parents only one type of allele is passed i.e T
Can you guys help me solve this?
Answer:
Ghethan,Haylei,Liam
Explanation:
Liam
Haylei
Ghethan
I think that's the answer they're going for.^
A gradual change over time in a species that enables the species to better survive in its environment is known as a(n)
A. adaptation
B. habitat
C. population
D. competition
Answer:
Adaption
Explanation: the definition of adpation is to learn how to survive or to learn what to do to be better or wtvr
Ocean currents - Surface ocean currents can occur on local and global scales and are typically wind-driven, resulting in both horizontal and vertical water movement. Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is. The greater the density differences between different layers in the water column, the greater the mixing and circulation. Density differences in ocean water contribute to a global-scale circulation system, also called the global conveyor belt. The global conveyor belt includes both surface and deep ocean currents that circulate the globe in a 1,000-year cycle. The ocean’s global conveyor belt plays a key role in distributing heat energy and regulating weather and climate. The driving force behind this circulation system is
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Surface ocean currents can occur on local and global scales and are typically wind-driven, resulting in both horizontal and vertical water movement. ... Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is.Mar 21, 2013
A. Earth's orbital distances around the Sun throughout the year
B. differences in the heat energy balance at different latitudes on Earth
C. convections cells throughout the oceans that are the result of the Coriolis effect
D. the circulation of air in the troposphere due to differences in incoming solar radiation
science not chemisty
Which of the following statements about variations in species or populations is TRUE?
A. Variations help species and populations survive.
B. All organisms in a population have the same variations.
C. Physical variations are the only traits that help species or populations survive.
D. Behavior variations are the only traits that help species or populations survive.
Answer:hmm i think its C or A!
Explanation:
Answer: A
Explanation: Variations like sexual reproduction helps with other animals asexual only has the same variation so multiple variations can help no matter what, unless we yeet them a mile away
An 8-year-old child fell to the ground from an 8-foot-high playground structure. He is lying on his back and moving very little. What sign or symptom would make you call 911 right away?
Answer:
Pulse
Explanation:
The sign that would make me call 911 is his pulse. If the child's pulse is unresponsive, then that would be a clear sign for me to call the paramedics.
If an 8-year-old child fell to the around and lying on his back and moving very little. The signs and symptoms would make me call 911 are his pulse and blood.
What is 911?911 is a local emergency number in the United States. If there is any accidental or health emergency occurs. Then immediately call to this 911.
In India, the emergency number is 112.
Thus, If an 8-year-old child fell to the around and lying on his back and moving very little. The signs and symptoms would make me call 911 are his pulse and blood.
Learn more about 911
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When a chemical reaction is balanced, what do you know about the atoms on each side?
PLEASE HELP THIS IS DUE IN 30 MINUTES!!!
Answer:
they are opposite, negative and positive
Which statement describes a characteristic of an evergreen coniferous tree?
can grow in the tundra
has cones and needle-like leaves
leaves change color in the fall
loses all leaves in the winter
What can you infer from the fact that global warming has only been a problem for the last 100 years or so?
Prior to 100 years ago, the greenhouse effect on the earth was too minor to be detected.
The earth moved significantly closer to the sun about 100 years ago.
People have only been pumping large quantities of
greenhouse gases into the atmosphere for 100 years or
so.
The movement of glaciers was a major problem for
people 100 years ago.
Answer:
People have only been pumping large quantities of
greenhouse gases into the atmosphere for 100 years or
so.
NEED HELP FAST
NO LINK ANSWERS
Identify the molecule shown by using the correct combination of the following terms:
Inorganic
Organic
Hydrocarbon
Provide the Chemical Formula for the molecule shown.
Identify whether this molecule is a monomer or polymer and explain your answer.
Answer:organic
Explanation:
All my questions are being "Deleted" for violating community guidelines by the same bots that scam you with the file. I swear- if it turns out the moderation team is scamming it's own site users.... (Not saying this is the case, but how does a scam 'bot' delete a question?)
Answer:
well im not sure why
Explanation:
but this one isn't deleted yet sooo
When a farmer breeds only his or her best livestock, the process involved is
A. natural selection
B. selective breeding
C. survival of the fittest
D.artificial variation
Answer:
It is D
Explanation:
If you were to stand in the exact same position and track a pattern of stars in the sky throughout the night, what would you observe?
A.The stars would appear to move and change positions.
B.The stars would move a small distance and then stay in the new position for the night.
C.The stars would stay in the exact same position throughout the night.
D.You would not be able to see the stars throughout the night as they disappear at a certain time.
Answer:
A
Explanation:
The earth's rotation makes stars appear to move during the night.