1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
4vir4ik [10]
3 years ago
8

29 Points!!

Chemistry
2 answers:
bija089 [108]3 years ago
7 0
A single nucleus gives rise to two identical daughter nuclei. In mitosis<span>, identical copies of the chromosomes are produced and placed in each of the daughter cells.</span>
atroni [7]3 years ago
3 0
The last one would be false
You might be interested in
What is the formula for salt used for the green light in the fireplace
Y_Kistochka [10]
Hello R2o4!

The formula of salt used for green light is BaCl2
Cheers!
-Blizzard
5 0
2 years ago
The average propane cylinder for a residential grill holds approximately 18 kg of propane. how much energy (in kj) is released b
Angelina_Jolie [31]
Let's begin with the basic values  that will be used in the solution.

The formula of propane is C3H8. It is an alkane, a hydrocarbon with the general formula of CnH2n+2. Notice that hydrocarbons have only Carbon and Hydrogen atoms. Its molar mass (M) is 44 g.

Molar Mass Calculation is done as like that
C=12 g/mol, H=1 g/mol. 1 mole propane has 3 moles Carbon atoms and 8 mole Hydrogen atoms. M(
C3H8)= 3*12+ 8*1= 44 g

Combustion reaction of hydrocarbons gives carbon dioxide and water by releasing energy. That energy is called as enthalpy of combustion (
ΔHc°).  

ΔHc° of propane equals -2202.0 kj/mol. Burning of 1 mole C3H8 releases 2202 kj energy. Minus sign only indicates that the energy is given out ( an exothermic reaction ).

Let's write the combustion reaction.
C3H8 + O2 ---> CO2 + H20 (unbalanced) 
ΔHc° = -2202 kj/mol

Now, we calculate mole of 20 kg propane. Convert kilogram into gram since we use molar mass is defined in grams.
mole=mass/molar mass ; n=m/M ; n= 20000 g /44 (g/mol)=454 mole

1 mole propane releases 2202 kj energy.
454 mole propane release 2202 kj *454= 1000909 kj

The answer is 1000909 kj.



6 0
3 years ago
a hot air balloon has a volume of 875L. what is the original temperature of the balloon if its volume changes to 955 L when heat
soldi70 [24.7K]

Answer:

using Charles law

v1/t1= v2/ t2

Explanation:

875/t1=955/56+273

t1= 329* 875/955

t1= 302.82k

4 0
2 years ago
The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound, C5H10O
vova2212 [387]

Answer:The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound, C5H10O2, exhibits strong, broad absorption across the 2500-3200 cm^1 region and an intense absorption at 1715 cm'^-1. Relative absorption intensity: (s)=strong, (m)-medium, (w) weak. What functional class(cs) docs the compound belong to List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly. Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^1. The functional class(es) of thla compound is(are) alkane (List only if no other functional class applies.) alkene terminal alkyne internal alkyne arene alcohol ether amine aldehyde or ketone carboxylic acid ester nitr

3 0
2 years ago
Synthesis<br> Decompisition<br> O Combustion<br> O Single Displacement<br> O Double Displacement
BabaBlast [244]

Answer:

Synthesis

Explanation:

Nothing else works

4 0
2 years ago
Other questions:
  • How many σ and π bonds are in the molecule h c c n b b h h?
    15·1 answer
  • How to draw an.electron dot diagram. 1 write the chemical aymbo of the atom.2. Determine the number of valence electron the atom
    6·1 answer
  • Name three types of energy associated with the microwave
    14·1 answer
  • If an unknown liquid has a density of 0.756 g/mL and a mass of 2.00 g, what is its volume?
    14·1 answer
  • 6. Barium sulfate and and sodium sulfate react in a double displacement reaction. If the
    8·1 answer
  • If 20.0g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?
    9·2 answers
  • Which of these is NOT a mixture?
    7·1 answer
  • Explain why children should not be forced to choose sides in a divorce situation, provide two responses
    5·1 answer
  • HELP ME!!!!
    7·1 answer
  • HELP! <br><br>How many moles of a solute would 3 liters of a 2-molar solution contain? ​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!