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Related Questions
DUE IN A FEW!!!!!! PLS HELP
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Answer:
the answer is is C 465 grams
What makes a pure substance different from a heterogeneous mixture? (4 points)
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Explanation:
Pure substances are elements and compounds. These substances have the following properties:
All parts are the same throughout which implies that they are homogeneous. They have a definite composition. They cannot be easily separated or broken down into simpler substances by physical meansSeparation by physical means is not possible They have unique sets of physical properties.Heterogeneous mixtures have completely opposite properties as the pure substances as given above.
hi can you pls help :)
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Answer:i think it is c, it explodes in water because that’s a chemical reaction
Explanation:
what is the smallest atomic radius
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Answer:
Helium
Explanation:
Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.
The uncertainty in the measurement 1500 m is
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Answer:
Its 1500 meters, which is equal to 0.9320568 miles. Hope this helps!
Explanation:
plzz help guyss I'm so confused
Starting from rest, you reach a speed of 20 m/s in 4 seconds. What is your acceleration?
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Iodine monochloride (ICl) has a higher boiling point than bromine (Br2) partly because iodine monochloride is a(n)
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Answer: polar molecule.
Explanation:
The boiling point is the temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid. The boiling point is dependent on the type of forces present.
Iodine monochloride (ICl) is a polar molecule due to the difference in electronegativities of iodine and chlorine. Thus the molecules are bonded by strong dipole dipole forces. Thus a higher temperature is needed to generate enough vapor pressure.
Bromine [tex](Br_2)[/tex] is a non polar molecule as there is no electronegativity difference between two bromine atoms. The molecules are bonded by weak vanderwaal forces and thus has low boiling point.
Balance Nuclear Reaction
94239Pu --> 24He + ________
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When 29 grams of sodium metal (Na) react with 49 grams of chlorine gas (C1), solid
sodium chloride (NaCl) is created in synthesis reaction. How much excess sodium OR
chlorine is left over?
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Answer:
Explanation:
Na + Cl = NaCl
23 g 35.5 g
23 g sodium reacts with 35.5 g of chlorine
29 g of sodium reacts with 35.5 x 29 / 23 g of chlorine
= 44.76 g
So 44.76 g of chlorine reacts and 49 - 44.76 = 4.24 g of chlorine is left over .
All the sodium is used up in the reaction .
can someone answer this question?
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Answer:
what is the question i could help if u gave me the question but i don't see it
Explanation:
As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 yesrs of operating 104 nuclear power plants.
on average how much waste is produced by each plant on a monthly basis?
a. 0.8 tons p. month
b. 83.3 tons p. month
c. 104 tons p. month
d. 866.3 tons p. month
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Answer: a. 0.8 tons p. month.
Explanation:
Given: Total nuclear waste = 60,000 metric tons
Time take = 60 years = 12 x 60 months [ 1 year = 12 months]
= 720 months
Total nuclear power plants = 104
Now , Average waste produced by each plant = [tex]\dfrac{\text{Total waste}}{\text{Time x Number of plants}}[/tex]
[tex]=\dfrac{60000}{720\times104}\approx0.8\text{ tons per month.}[/tex]
Hence, 0.8 tons p. month is produced by each plant.
So, option a. is correct.
Answer:
A on edge 2021
Explanation:
Use the drop-down menus to complete the statements.
A segment of DNA is called a
.
A complex of nucleic acids and proteins that make up chromosomes is called
.
A structure in the nucleus of an eukaryotic cell that is made up of condensed DNA is called a
.
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A segment of DNA is called a gene.
A complex of nucleic acids and proteins that make up chromosomes is called Chromatin
A structure in the nucleus of an eukaryotic cell that is made up of condensed DNA is called a chromosome.
Answer:
1. Gene
2. Chromatin
3. chromosome
Explanation:
I hope this helps you :)
what’s the answer to this question pls help
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Which has a greater ionization energy: lithium or bromine? Which has a greater ionization energy: vanadium or sodium?
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2. Vanadium has a greater ionization energy
the melting point of gallium metal is 29.76°C If a piece of gallium is sliced into three parts, the melting point will be:
A. higher than 29.76°C
B. 29.76°C
C. lower than 29.76°C
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Answer: B. 29.76°C
Explanation:
The melting point is known as an intensive property of matter. This means the melting point is not affected by the amount of mass. Whether the metal is really large or small, the melting point of gallium (Ga) is roughly 29.76 degrees Celsius.
Which is an example of chemical change?
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Answer:
Burning, cooking, rusting and rotting are examples of chemical changes.covalent bonds always share electrons equally
A: True
B: False
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I hope this helped! +*♡
what chemical reaction type is Pb + 2 H3PO4 --> 3 H2 + Pb3(PO4)2
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Answer:
single displacement reaction
Explanation:
it is because an atom(Pb) dispalces another atom(H) in H3PI4
The given chemical reaction is single displacement reaction.
What is single displacement reaction?When one element in a molecule gets replaced by another, is therefore called a single displacement reaction.
The given reaction is Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2
It can be seen that when lead is treated with H3PO4 then it will give Pb3(PO4)2 and hydrogen reaction. It is a kind of single displacement reaction.
Therefore, the given reaction is single displacement reaction.
To know more about single displacement reaction.
https://brainly.com/question/3172917
What is the molar mass of Sn(CO3)2?
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Answer:
The molar mass and molecular weight of Sn(CO3)2 is 238.728.
Explanation:
Molar mass of any molecule can be calculated by adding mass of all individual atoms that comprises the compound. The Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol.
What is molar mass?Molar mass is defined as mass of one mole of a molecule or compound. It's SI unit is g/mole. The other term that is used for molar mass is molecular weight, formula unit mass. Molar mass is extensive property as it depends on the mass of individual atoms that constitutes the molecule.
Mass of tin= 118.71 g.mol
Mass of Carbon=12g/mol
mass of Oxygen= 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×mass of tin+2×mass of carbon+6×mass of oxygen
substituting all the values we get
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×118.71+2×12g/mol+6× 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] =118.71 +24+66
Molar mass of [tex]Sn(CO_{3})_{2}[/tex]=238.72g/mol
Therefore the Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol
To know more about Molar mass, here:
https://brainly.com/question/12127540
#SPJ2
How many unpaired electrons are present in V3+?
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Answer: two unpaired
Explanation: In general, electrons are removed from the valence-shell s-orbitals before they are removed from valence d-orbitals when transition metals are ionized. And thus, V3+ is paramagnetic, because it has two unpaired 3d-electrons.
What is the general formula for a secondary anime?
A. RNH2
B.H2NRNH2
C.RN2H
D.R2NH
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Answer:
D.R2NH
Explanation:
The general formula of a secondary amine is given as:
R2NH
Amines are organic compounds that show an appreciable basicity. They are regarded as the derivatives of ammonia where one or two of the three hydrogen atoms has/have been replaced by the alkyl or aryl groups.
In a secondary amine, two hydrogen atoms of ammonia have been replaced by alkyl and or aryl groups.
Answer:
d. R2NH
Explanation:
edge 2021
How much current is drawn by a 40-W bulb in a 120-V circuit?
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HEY! Nicki Minaj is the queen of rap.
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Answer:
O my OMG
Explanation:
Remember Nicki vs. Cardi
PLSS HELP! The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide? (4 points)
a. Carbon and oxygen are chemically bonded in it.
b. Carbon and oxygen retain their original identity in it.
c. It can be separated into carbon and oxygen using physical methods.
d. The proportion of carbon and oxygen is different in different samples of the gas.
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Answer:
The answer is option A..
Describe what a geologist would observe if she poured acid on the sculpture
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Answer:
A geologist would observe how the material that the sculpture is made out of reacts to the acid.
During the process of condensation, water vapor does what
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Answer: the water molecules become more organized and heat is released into the atmosphere as a result.
Explanation:
Please help... its due today and my teacher isn't explaining very good I have 100 points will give 40 to you a brainliest and thanks answers are at the bottom but I need the work done also
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Answer:
2Na2O2 + 2H2O → 4NaOH + O2 is the balanced ver of Na2O2 + H2O - NaOH + O2
Explanation:
what type of potential energy do fuels contain
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Answer:
It contains chemical potential energy.
Explanation:
What three consumers live in the epipelagic zone?
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The epipelagic zone reaches from the surface of the ocean down to around 650 feet. This is the zone most exposed to light, and as such is host to the highest concentrations of the ocean's life. There are thousands of animals that roam this zone, including dolphins, most sharks, jellyfish, tuna and corals.
(From Internet I’m being honest)
A balloon is filled with helium gas has a volume of 1.0 L at a pressure of 1.0 atm. The
balloon is released and reaches an altitude where the pressure is now 0.4 atm. What is the
new volume of the balloon at this altitude assuming the air temperature has not changed?
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Answer:
2.5 LExplanation:
The new volume of the balloon can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
From the question we have
[tex]V_2 = \frac{1 \times 1}{0.4} = \frac{1}{0.4} \\ = 2.5[/tex]
We have the final answer as
2.5 LHope this helps you