Answers
Answer:nope
Explanation:
Just no
Related Questions
1. A student predicted the reaction between hydrogen and oxygen gas would yield 125
mL of water. However, after measuring the water formed in the reaction, the
student determined that only 110mL of water was actually formed. What is the
percent yield of this reaction?
Answers
Answer:
88%
Explanation:
percent yield is the actual yield divided by the theoretical (predicted) yield, then multiplied by 100 to get a percentage.
110/125 = 0.88
0.88 x 100 = 88%
Thermal energy would naturally flow between objects at which temperatures?
O A. from 5°C to -5°C
OB. from 15°C to 15°C
OC. from 35°C to 45°C
OD. from -15°C to 15°C
Answers
Answer:
i think the answer is letter C. From 35°c to 45°c
Explanation:
sorry if it is wrong
Which of these layers is found directly above the Earth's core?
Group of answer choices
Outer core
Mantle
Inner core
Crust
Answers
Answer: Mantle
Explanation:
there are 3 layers of the earth- core, mantle and crust. The layer found directly above the earth's core is the mantle.
Answer:
The answer depends on what you are taking about: the outer core or the inner core?
Answer: Mantle
Explanation:
If you find a picture of the Earth's layers, you can see that the inner core is the bottommost layer. However, if you combine the Inner Core and Outer Core, that could be determined as the Earth's core.
I would chose the Mantle because if the two cores are combined, the layer directly above them is the Mantle.
HELP ME PLEASE I NEED THE ANDEER NOW
Answers
Which of the following best explains how an organism's phenotypic traits increase the chances for a species to survive?
A.
An organism’s phenotype may influence its ability to find food, and also might affect the organism’s ability to reproduce and pass on favorable alleles.
B.
An organism’s phenotype may influence its ability to produce chromosomes and pass those chromosomes to future generations
C.
An organism’s phenotype may influence its ability to turn on certiain genes necessary for survival.
D.
An organism’s phenotype is not connected with the chances for a species to survive.
Answers
Answer:
A
An organism’s phenotype may influence its ability to find food, and also might affect the organism’s ability to reproduce and pass on favorable alleles.
B.
An organism’s phenotype may influence its ability to produce chromosomes and pass those chromosomes to future generations
C.
An organism’s phenotype may influence its ability to turn on certiain genes necessary for survival.
D.
An organism’s phenotype is not connected with the chances for a species to survive.
Explanation:
Phenotype is the physical appearance of an organism as distinguished from its genetic makeup. The phenotype of an organism depends on which genes are dominant and on the interaction between genes and environment.
What is the mass of 22 mL of gold, which has a density of 19.3 g/mL? Show your work or explain your steps.
Answers
Answer:
424.6g
Explanation:
Density is a measure of a substance's mass over its volume.
d = m/v
we can rearrange this equation to solve for mass algebraically.
dv = m
We can then substitute the given values for our variables in the problem and solve for our answer.
22mL(19.3g/mL)= 424.6g
Complete the Replication and Transcription of the following DNA Sequence:
GGAGTTACAGTTAGTA
Replication (DNA to DNA):
Transcription (DNA to RNA):
Answers
Answer:
CCUCAAUGUCAAUCAU or you could try CCTCAACGTCAATCAT i could be wrong so sorry im not the best
Answer:
Replicated DNA: CCT-CAA-TGT-CAA-TCA-T
Transcription sequence (mRNA): CCU-CAA-UGU-CAA-UCA-U
Explanation:
Any idea for science project acccept digestive system
Answers
553.5 mL ?:cm^3
how do i get my answer? and what is the answer?
Answers
Answer:
553.5 cm3
Reason:
1 mL = 1 cm3
How might knowing the indicators of a chemical reaction help you explain what happened when the sulfuric acid was mixed with powdered sugar? How does this relate to the rearrangement of atoms that occurs in a chemical reaction? Record your evidence.
Answers
Answer:
I don't know I'm sorry I will tell you another
8. What is the [H+] of a solution with a pH of 4.78
Answers
Answer:
7.01 is the answer of the [H+] of a solution with a pH of 4.78
someone please ASAP
the options are
1. BF.
2.B4
3.B2F2
3.BF3
Answers
Answer:
B4
Explanation:
good day
How many atoms are there in 0.655 moles of C6H14?
Answers
Answer: 3.94 x 10^23 molecules
Explanation: hope this helps!
Match the items to use the analogy of time to the vocabulary of chemistry.
Answers
Answer:
1 year- 1 mole
time in general- amount of matter
1 second- 1 atom/ particle
Answer:
1 Year => 1 Mole
Time in General => Amount of Matter
1 Second => 1 Atom/Particle
Explanation:
These pairs make the most sense.
Hope it helps!!!
The Kₐ of carbonic acid is 4.3 x10⁻⁷ . H₂CO₃ ⇄ H⁺ + HCO₃ ⁻ This means that H₂CO₃ is a
A) Good hydrogen-ion acceptor.
B) Poor hydrogen-ion acceptor.
C) Good hydrogen-ion donor.
D) Poor hydrogen-ion donor.
Answers
Answer:
A good hydrogen ion acceptor
how many grams will be produced??
Answers
Explanation:
b is correct. 30.6 g H2O is produced.
Matching
Match each definition with the correct term.
Definitions
_____ 1. device for measuring temperature
_____ 2. total kinetic energy of particles of matter
_____ 3. amount of energy needed to raise the temperature of 1 gram of a substance by 1 °C
_____ 4. average kinetic energy of particles of matter
_____ 5. scale for measuring temperature
From the CK-12 Physical Science For Middle School Workbook
_____ 6. transfer of thermal energy between objects with different temperatures
_____ 7. measure that affects the thermal energy of matter but not its temperature
Terms
thermal energy
heat
temperature
thermometer
mass
Celsius
specific heat
Answers
Answer:
1. thermometer
2. thermal energy
3. specific heat
4. temperature
5. Celsius
6. heat
7. mass
How do scientists know a reaction in dynamic equilibrium hasn't just stopped?
Answers
Answer:
any reaction will be in dynamic equilibrium if it's reversible and the rates of the forward and reverse reactions are equal.
Explanation:
say that you prepare a solution that is saturated with an aqueous solution of NaCl
Which of the following best describes the difference between a mixture and a pure substance? A. A mixture has different properties throughout; a pure substance has the same properties throughout. B. A mixture is made up of more than one type of atom; a pure substance is made up of only one type of atom. C. A mixture is made up of only one type of atom; a pure substance is made up of more than one type of atom. D. A mixture has the same properties throughout; a pure substance has the different properties throughout.
Answers
Answer:d
Explanation:
Answer:
A mixture has different properties throughout; a pure substance has the same properties throughout.
Explanation:
If the volume is 500 mL, the mass of air is 60g (molar mass of air= 29g/mol), and the temperature is 0 C, what is the pressure inside the bottle?
Answers
Answer:
The pressure inside the bottle is 92.678 atm.
Explanation:
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P * V = n * R * T
In this case:
P= ?V= 500 mL= 0.500 Ln= 60 g* [tex]\frac{1 mole}{29 g}[/tex] = 2.07 molesR= 0.082 [tex]\frac{atm*L}{mol*K}[/tex]T= 0 C= 273 KReplacing:
P* 0.500 L= 2.07 moles* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] * 273 K
Solving:
[tex]P=\frac{2.07 moles* 0.082 \frac{atm*L}{mol*K} * 273 K}{0.500 L}[/tex]
P= 92.678 atm
The pressure inside the bottle is 92.678 atm.
Can somebody give me some backup for this question?
Answers
What is the molar mass of Pb(ClO )4 ?
Answers
Answer:
605.0024
The molar mass and molecular weight of Pb(ClO4)4 is 605.0024.
Explanation:
What type of reaction is the following:
2 Na + Cl2 -> 2 NaCl
decomposition
double replacement
single replacement
synthesis
Answers
Answer:
Synthesis :)
Explanation:
Name General Reaction Pattern
Combination or synthesis A + B ----> AB
Decomposition AB ----> A + B
Substitution or Single Replacement A + BC ----> B + AC
Metathesis or Double Displacement AB + CD ----> AD + CB
Combination or Synthesis Reactions Two or more reactants unite to form a single product.
Therefore the answer is Synthesis
1. Which group of elements does not get an electronegativity value
because they do not form compounds? *
Alkali Metals
Alkaline Earth Metals
Boron Group
Carbon Group
Nitrogen Group
Oxygen Group
Answers
Answer:
noble gases from what i learnt
what does this graph represent?
A. speed
B. velocity
C. acceleration
D. momentum?
Answers
Is it true or false?
Answers
Answer:
false
Explanation:
because i know it
Which statement accurately describes liquids?
Answers
Answer:
what are the statments?
Explanation:
How many moles are in 45.5 g of P2O5 ?
Answers
Answer:
0.327214 mol
Explanation:
45.5/278.106=0.163607
Then, 0.163607x2= 0.327214
SOMEONE SMART HELP PLS!!
Answers
1. Convert 1.5 moles to molecules 2. Convert 1.204x10^24 molecules to moles 3. Convert 1.5x10^20 molecules to moles 4.Convert 0.35 moles to molecules 5. Convert 15 moles H2O to atoms 6.Convert 0.75 moles CaSO4 to atoms
Answers
Answer:
Explanation:
1.5 moles to molecules
1 mole = 6.02 x 10²³ molecules
1.5 moles = 6.02 x 1.5 x 10²³ molecules
= 9.03 x 10²³ molecules
2 )
Convert 1.204x10²⁴ molecules to moles
6.02 x 10²³ molecules = 1 mole
1.204x10²⁴ molecules = 1.204x10²⁴ / 6.02 x 10²³ moles
= 2 moles
3 ) Convert 1.5x10^20 molecules to moles
6.02 x 10²³ molecules = 1 mole
1.5x10²⁰ molecules = 1.5x10²⁰ / 6.02 x 10²³ moles
= .25 x 10⁻³ moles
= 2.5 x 10⁻⁴ moles .
4 )
Convert 0.35 moles to molecules
1 moles = 6.02 x 10²³ molecules
.35 mole = 6.02 x .35 x 10²³ molecules
= 2.1 x 10²³ molecules.
5 )
Convert 15 moles H₂O to atoms
1 moles = 6.02 x 10²³ molecules
15 moles = 15 x 6.02 x 10²³ molecules
= 90.3 x 10²³ molecules of water
1 molecule of water has 3 atoms in total
90.3 x 10²³ molecules of water = 90.3 x 3 x 10²³ atoms
= 270.9 x 10²³ atoms .
6 )
0.75 moles CaSO₄ to atoms
1 moles = 6.02 x 10²³ molecules
.75 moles = .75 x 6.02 x 10²³ molecules of CaSO₄
= 4.515 x 10²³ molecules of CaSO₄
1 molecule of CaSO₄ = 6 atoms
4.515 x 10²³ molecules of CaSO₄ = 6 x 4.515 x 10²³ atoms
= 27.09 x 10²³ atoms .