Answer:
planet, star, solar system, galaxy, universe
plz mark me as brainliest.
Which of the following statements describes the elements in group 16 of the periodic table?
No links!
Answer:
C.
Explanation:
someone help plz!
what is a Hydrogel?
Answer:
Hydrogels can be defined as systems comprising of three-dimensional, physically or chemically bonded polymer networks entrapping water in intermolecular space.
Explanation:
An element is BEST described as a substance that:
is made of atoms
Cannot be broken down into other substances
Contains water
Is a metal used in kettles
Answer:
Cannot be broken down into other substances
Explanation:
Name a compound containing bromine and iodine
Synthesis. Iodine monobromide is formed when iodine and bromine are combined in a chemical reaction: I2 + Br2 → 2 IBr.
What is the speed of a wave on a guitar string with a mass of
0.5 kg, if it takes 0.2 seconds for the wave to travel down the
0.9 m string.
Answer: 4.5
Explanation:
Two or more members of the same species living in the same habitat
Answer:
population - A group of organisms of the same species living in the same area at the same time, and which are capable of interbreeding. community - A group of populations living and interacting with each other in a common habitat.
Explanation:
The competitive exclusion principle tells us that two species can't have exactly the same niche in a habitat and stably coexist. That's because species with identical niches also have identical needs, which means they would compete for precisely the same resources.
what is a dehydrate in chemistry?
Answer:
hydrate agen
Answer:
In chemistry, a dehydration reaction is a conversion that involves the loss of water from the reacting molecule or ion.
Dehydration reactions are common processes, the reverse of a hydration reaction.
Common dehydrating agents used in organic synthesis include sulfuric acid and alumina.
Explanation:
good luck
Given the reaction:
Zn(s) + 2 HCl(aq) → Zn2+(aq) + 2 C1-(aq) + H2(g)
If the concentration of HCl(aq) is increased, the
frequency of reacting collisions will
a) decrease, producing a decrease in the reaction rate
b) decrease, producing an increase in the reaction rate
c) increase, producing a decrease in the reaction rate
d) increase, producing a increase in the reaction rate
Answer:
d) increase, producing a increase in the reaction rate
Explanation:
WILL GIVE THE BRAINLIEST
in the reaction 2CO(g) +O2(g)------> 2CO2(g) vwhat is the ratio of moles of CO used to moles O2 used?
Answer:
Oxygen: Carbon Dioxide
O2:2CO2
1:2
Part A
Question 1
Right after Javier constructed the sling psychrometer, both thermometers had the same reading. Do you predict that the thermometers will still show the same temperature after Javier swings the psychrometer in a circle for a minute?
Answer:
No, they will not have the same temperature.
Explanation:
No, they will not have the same temperature.
What is Thermometer?An instrument that measures temperature is a thermometer. It is able to gauge the temperature of solids like food, liquids like water, and gases like air.
Celsius, Fahrenheit, and kelvin are the three most popular temperature measuring units. The metric system includes the Celsius scale. The metric system of measuring also contains units for length (like kilometres) and mass (like kilograms).
Nearly all nations in the world use the metric system as their official unit of measurement, which includes Celsius. The Celsius scale is used to measure temperature in most scientific disciplines.
Therefore, No, they will not have the same temperature.
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1. The total pressure of a gas mixture is 1.05 atm. The mixture contains 55% carbon dioxide, 31% nitrogen, and 14% hydrogen.
What is the partial pressure of the carbon dioxide in the mixture?
Answer:
0.15
Explanation:
The partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.
What is Dalton's law?Dalton's law can be described as the total pressure of all gases exerted being equal to the sum of the partial pressures of every gas in the mixture of non-reacting gases.
The total pressure of a gas mixture of gases can mathematically be defined as :
P (total) = P₁ + P₂ + P₃ + ......
Given, the total pressure of a gas mixture = Ptotal = 1.05 atm
The fraction of carbon dioxide in the mixture = 55 % = 0.55
The fraction of nitrogen in the mixture = 31 % = 0.31
The partial pressure of carbon dioxide in the mixture can be calculated as:
P(CO₂) = 0.55× P(total)
P(CO₂) = 0.55× 1.05
P(CO₂) = 0.58 atm
Therefore, the partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.
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The ability of a match to burn is an example of a physical property.
Answer:
true
Explanation:
A scientist is adding oxygen to iron in a chemical reaction to create rust. At what point during
this reaction will the oxygen and iron quit making rust?
Answer: What type of chemical reaction is rusting of iron?
Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons.
How many ammonia molecules can be made with 1 N2 and 3 H2? Please explain.
Answer:
You have described a scenario where nitrogen is the limiting reagent since:
2 N2 + 6 H2 → 4 NH3
You could make four molecules of ammonia and have four molecules of hydrogen left over.
. If 30.0 grams of copper (II) chloride reacts with 40.0 grams of sodium nitrate, what is the limiting reactant?
Answer:
The limiting reactant is copper (II) chloride
Explanation:
here you go
Soil has a specific heat capacity of 1.700J/g C. During the day, the temperature of soil in a
flowerpot increased from 15.6°C to 35.5°C. If the energy from the sun was calculated to be 251 175J,
what was the mass of the soil? Show your work.
Answer:
m = 7.42 kg
Explanation:
Given that,
The specific heat of the soil, c = 1.700J/g C
The temperature of soil in a flowerpot increased from 15.6°C to 35.5°C.
The energy released from the Sun is 251175 J. We need to find the mass of the soil.
We know that,
[tex]Q=mc\Delta T\\\\or\\\\m=\dfrac{Q}{c\Delta T}\\\\m=\dfrac{251175}{1.7\times (35.5-15.6)}\\\\m=7424.62\ g[/tex]
or
m = 7.42 kg
So, the mass of the soil is equal to 7.42 kg.
Which is not a physical state of matter?
A. Solid
B. Liquid
C. Plasma
D. Gas
Answer: Plasma
Explanation:
Answer: Plasma
Explanation:
Lower the Room temp. to -10.0 °C, wait until all the water has frozen, and then wait a little while more. What happens to the ice temperature after all the water is frozen?
No link or Files Plzz
Answer:
the ice becomes -20 degrees celcius colder
Explanation:
so if there is 16 protons and 16 neutrons what would be the charge right now?
Answer:
16
Explanation:
Protons have a positive net charge,
Neutrons being neutral don't have a net charge.
Each proton is one extra net charge if you have 16 of them and the neutrons don't affect your net charge you will have 16.
2NaCl ---> 2Na + Cl2
What are the atoms of the products
Answer: ...
Explanation:
Sodium, chlorine
Answer:
2Na = 2 Sodium [has 2 atoms]
Cl2 = Dichlorine (Chlorine) [has 2 atoms]
Is this what you wanted?? I'm not entirely sure if this is the answer you were looking for.
Harold’s car has a fuel efficiency of 35 miles per gallon. Frank’s car has a fuel efficiency of 12 kilometers per liter. Who gets better gas milage, Harold or Frank?
Answer: Harold car has better mileage
Explanation: US gallon is 3.785 litres and one mile is 1.6 km.
35 · 1.6 km/ 3.785 l = 14.8 km/l
The Harold's car has a fuel efficiency of 35 miles per gallon and has better gas mileage.
What is efficiency?The efficiency is defined as the peak level of performance that uses the least amount inputs to achieve the highest amount of output.
Effectiveness is the ability to produce a better result, one that delivers more value or achieves a better outcome.
Efficiency is expressed as
Efficiency = output / input
The mileage of Harold's can be calculated as:
US gallon has 3.785 liters and 1 mile is 1.6 km
Thus mileage = 35 x 1.6 km / 3.785 l
= 14.8 km/l
Mileage of Frank's car = 12 x 1.6 km / 3.785 l
= 5.07 km/l
Thus, the Harold's car has a fuel efficiency of 35 miles per gallon and has better gas mileage.
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Please give the correct answer. Please don’t give me any random websites. I will add you if you get it correct
Answer:
C) convection; mantle
Explanation:
"The outward transfer of earths internal heat helps drives CONVECTION circulation in the MANTLE. I hope this helps!"-aliyaross15ouf9rk
what material should a coffee mug be constructed from?
A. paper.
B. metal.
C. clay.
D. stone
Answer:
The answer is Clay or C!!!
Explanation:
Brainliest Please!!!!!!!!!
are you chemistry because you just blew up my heart
Answer:
i needed that lol
thank you
Explanation:
An object in space (or moon) that orbits a planet or minor planet. *
Answer:
A minor-planet moon is an astronomical object that orbits a minor planet as its natural satellite.
Explanation:
An object in an orbit is called a satellite. A satellite can be natural, like Earth or the moon. Many planets have moons that orbit them. A satellite can also be man-made, like the International Space Station.
NEED HELP!! What types of waves are transmitted from the H-E-L-P device ?
Answer:
What do you mean need more details
Explanation:
Since a help device is a a communication gadget, we know that the help device will make use of radio waves.
What is a help device?A help device refers to a device that can be used for emergency communication. They are basically communication gadgets.
We must note that our communication gadgets such as television, radio, cell phone etc all make use of radio waves. Hence a help device would make use of radio waves.
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what is one way that fish interact with a coral reef
Answer:
The second answer. Fish hide within the coral. Hope this helps!!!!
2Al(S)+1.5O2(S)→Al2O3(s) H= -1676.0 KJ
2Fe + 1.5O2 (S) →Fe2O3(S)
Then the enthalpy change for the following equation is _______KJ
2Al + Fe2 O3(S) → 2Fe +Al2O3(s)
pls i dont have time
Answer:
[tex]∆H = - 1676.0 - 0 \\ = - 1676.0 \\ heat \: gained \: in \: reaction \: of \: iron \: and \: oxygen \: is \: zero \: because \: it \: is \: not \: given[/tex]
Balance the following:
Answer:
[tex]Na_3PO_4+Al(OH)_3\rightarrow3NaOH+AlPO_4[/tex]
Shiny materials absorb radiant energy.
True
False
Answer:
False
Explanation:
Shiny materials reflect radiant energy.
& it was on quizlet :)