Answer:
Dos quintos al cuadrado dividido cinco medios a la menos 1.
Explanation:
Answer:
Na which is sodium.....
3) Two atoms have identical electron configurations. Which statement about the atoms
is true?
a) They have the same chemical properties.
b) They must have the same mass.
c) They must have the same number of neutrons.
d) They could be atoms of different elements in the same group.
Look at the following equation.
Au O3 → _Au +_02
In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?
Answer:
Explanation: possible oxidation numbers of Au are +I and +III
Au2O3 ⇒ 2 Au + 3 O2
An aerosol can was found to burst at a pressure of about 24 atm and 85 c. What was the pressure inside the can at normal room temperature ( about 23 c)
Answer:
Drd
Explanation:
What is the mass of MgO required to make 800 mL of a 1.5M solution?
A) 1.2 g
B) 48.72 g
C) 0.03 g
D) 60.47 g
Answer:
B 48.72 g
Explanation:
i hope this helps
How many Liters of I2 are produced when 241.6 grams of KI are reacted with excess CuBr2?
Answer:
8.15 L I2
Explanation:
So, I have the balanced equation of: 2CuBr2 +4KI → 2CuI + 4KBr + I2
Now, we do:
241.6g / 1 mol KI / 1 mol I2 / 22.4 L
--------------------------------------------------------- = 8.15 L I2
/ 166g KI / 4 mol KI / 1 mol I2
Hope this helps! ^u^
Select the answer choice that is arranged from smallest to largest.
Answer:
Im like 75% sure that the answer is C.
Explanation:
Hope this helps! Have a great day. Remember your amazing and you got this! Alycia <3
Which is a NOT a freshwater source on Earth?
A. The ocean
B. The atmosphere
C. Surface water
D. Groundwater
Answer:
B the atmosphere it's not on earth and I'm pretty sure the atmosphere doesn't have water in
Explanation:
Shown in the table below are solubility data for different salts in water at 60oC.
Which salt is most soluble at 60o C?
A, B, C, or D.
(Chart Below:)
Answer:
D is the most soluble in water at 60 degrees Celsius
According to the data given in the table, the salt is most soluble at 60o C - salt D.
In the given table it is given that all the salts are soluble in different concentrations in different concentrations of the water at the same temperature of 60 degrees celsius.
Salt A - 10/ 50 grams H₂OSalt B - 20/60 grams H₂OSalt C - 30/120 grams H₂OSalt D - 40/120 grams H₂OConverting them in the same amount of H₂O that is 100 grams in the same ratio:
Salt A - 10/ 50 = x/100 gram = 20 gram/ 100 gram H₂OSalt B - 20/60 = x/100 grams = 33.3 gram/ 100 gram H₂OSalt C - 30/120 = x/100 grams = 25 gram/ 100 gram H₂OSalt D - 40/120 = x/100 grams = 50 gram/ 100 gram H₂OThus, the salt D is the most soluble that is 50 grams per 100 gram H₂O.
Learn more:
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How do I convert this equation to a skeleton equation?
Methane gas + oxygen gas carbon dioxide + water
Answer:
2CH4 + 4O2 => 2CO2 + 4H2O
Explanation:
Mark brainly if it's helpful
Solve then following conversion problems:
(9.56 x 103) + (6.0 x 103)
(3 x 10-4) x (3 x 10-2)
(8 x 108) / (4 x 102)
could u please help? I'm screwed and I got a test coming up
Answer:
The first one is: 1602.68
The second one is: 72.8
The third one is: 2.11764705882
Hope this helps!
Sometimes the instructions say to round to the nearest hundreth, thousandth, or whole number. Make sure to check that before you enter any of these!!
50 POINTS!
What do you expect to happen to the reaction rate when the size of a solid reactant is changed describe increased in size or solid reactant effect on rate/decrease in size of solid react in a second on rate
Answer:
sorun nedir anlamıyorum seni türkçe yaz
Describe at least two ways that carbon can get from the atmosphere to the hydrosphere.
Answer:
One way is that carbon dioxide automatically dissolves in cold ocean surface waters anyway so large bodies of water already have a concentration of carbon dioxide. Another way is when carbon dioxide dissolves in rainwater which later reacts with minerals in rocks. These rocks then get carried away by rivers or streams into bigger bodies of water and the carbon is transported through the minerals in the rocks.
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
Answer:
there isnt anything
Explanation:
EXTRA CREDIT. The rate at which an object moves is its speed. If a horse
walked 50m in 68s, cantered 150m in 35s, and galloped 300m in 22s, what
would its average speed be? Show your work! Help ASAP
Balancing Chemical Equations & Identifying Chemical Reactions
Balance the Equation Identify the Type of Chemical Reaction
_____P4 + __5__O2 _____P4O10 Combustion
_____Al2O3 _____Al + _____O2
Al: Al:
O: O:
_____H2O2 _____H2O + _____O2
H: H:
O: O:
_____CH4 ______C2H6 + _____H2
C: C:
H: H:
_____C + _____H2 _____C2H6
C: C:
H: H:
_____Fe + _____H2O _____Fe3O4 + _____H2
Fe: Fe:
H: H:
O: O:
_____N2 + _____H2 _____NH3
N: N:
H: H:
_____Na + _____O2 _____Na2O
Na: Na:
O: O:
_____NaCl + _____CaSO4 _____Na2SO4 + _____CaCl2
Na: Na:
Cl: Cl:
Ca: Ca:
SO4 : SO4:
_____C2H6 + _____O2 _____CO2 + _____H2O
C: C:
H: H:
O: O:
_____K + _____B2O3 _____K2O + _____B
K: K:
B: B:
O: O:
_____Na + _____NaNO3 _____Na2O + _____N2
Na: Na:
N: N:
O: O:
Challenge:
_____CH3CH2CH2CH3 + _____O2 _____CO2 + _____H2O
This yellow nonmetal with a distinct odor is used in the manufacture of
gunpowder, the vulcanization of rubber, and in insecticides and
medicinal drugs.
Answer: it is Sulphur, S
Explanation:
A picture of a patient’s lung showed it to be shriveled and darker than usual.
Which is most likely the cause of this lung condition?
A. smoking
B. overeating
C. sickle cell anemia
D. poor refrigeration
Answer:
Smoking
Explanation:
It has been proven time and time again to ruin lungs, effectively shortenning ones lifespan.
Explanation:
Smoking, because smoking causes these types of symptoms in long time smokers and people who start to smoke. also I know the answer cause my dad's a nurse.
is this reaction oxidation or reduction
CH2=CH2 + OsO4 yields to HOCH2CH2OH
Answer:
it's definitely a oxidation reaction because here the oxygen contained OH group present in yeild
A hot air balloon rises because the fire warms up the air and the air circulates to fill the balloon and lift it at the same time. What type of heat transfer is this?
A.Conduction
B.Convection
C.Radiation
D.Absorption
PS: Please Hurry ! Thank You !
Answer:
B.
Explanation:
Convection is the transfer of heat energy, I'm REALLY sure. Please tell me if its wrong in the comments!
In which area are you most likely to find sunny skies?
A Arizona
B. Mexico
C Texas
D. Colorado
it is probably a
but dont trust me since i dont live in the US
Answer:
I believe the answer is A, Arizona.
A scientist is studying a liquid. If she lowers the temperature of the liquid,
which of the following will most likely occur? *PLEASE HELPPPPPPPPP*
The liquid will boil
The liquid will melt
The liquid will freeze
The liquid will evaporate
Double and triple bonds form because
Need help on thissss
Answer:37
Explanation:
Because mass number is proton number + neutron number
Will an atom gain or lose an electron? CER
what are greenhouse effect 1 paragraph and come friends
pls hurry
Answer:
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
Explanation:
Greenhouse gases are certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) that trap energy from the sun. Without these gases, heat would escape back into space and Earth's average temperature would be about 60º F colder.
the warming of the Earth's atmosphere that is caused by air pollution. Note: The greenhouse effect occurs when warmth from the sun is trapped in the Earth's atmosphere by a layer of gases (such as carbon dioxide) and water vapor.
Organisms on earth are
th-based Ilfe forms.
hydrogen
oxygen
carbon
Hurryyyy!!
Answer:
carbon...?
Explanation:
Answer:
Carbon
Explanation:
Carbon makes up most of the building blocks of life. Hope that is right. Good luck
the apparent curving of winds due to earth's rotation is called the
Help please
What is the frequency of a wave with a velocity of 100 m/s and a wavelength
of 20 m?
A. 5 Hz
O B. 120 Hz
C. 2000 Hz
O D. 0.2 Hz
Answer:
Frequency = Velocity / Wavelength = 100 m/s / 20 m = 5 s-1 or 5 Hz.
Explanation:
The frequency of a wave with a velocity of 100 m/s and a wavelength of 20m is 5 Hz.
So, option A is correct one.
What is frequency?The number of waves that pass per unit time is called frequency.Formula: [tex]v = c/lamda[/tex]v = Frequency of wave
c = Velocity
lamda = wavelength of wave
Calculation,
Let velocity = 100 m/s
wavelength = 20m is 5 Hz.
Then, Formula: [tex]v = c/lamda[/tex]
[tex]v[/tex] = 100 m/s / 20m = 5 [tex]s^{-1}[/tex] = 5 Hz ( 1 [tex]s^{-1}[/tex] = Hz )
So, frequency of wave is 5 Hz
Learn about frequency,
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#SPJ2
How many aluminum atoms are in 2.26 g of aluminum?
Answer:
Aluminum atoms are in 3.78 g of aluminum
02214076x10^23)8.4367659370640769254888x10^22 atoms, therefore there are 8.4367659370640769254888x10^22 atoms of Aluminum(Al) present in 3.78 grams of Aluminum(Al).
Explanation:
Tin+Chlorine -> Chlorine -> Tin(IV) chloride
Answer:
what's the question?
Explanation: