Answer:
Africa, Asia, Australia, Antarctica, Europe, North America, and South America.
Explanation:
PLEASE HELP I WILL GIVE YOU 100 POINTS ON THE NEXT QUESTION
How the Masses of Objects Affect the Gravitational Force between Them
Use the table to explain how the masses of Objects 1 and 2 relate to the gravitational force between them. Be sure to: Describe the scenario.
Explain the table headings to introduce the data in the table.
Use the data to show a trend.
Summarize the information from the table in a sentence, showing the relationship between the masses of objects and the gravitational force between the objects.
d) Place text in the notes section below the slide explaining the information presented on it. This text will act as the script for your presentation.
Answer:
okay so lets say i drop a ball that weighs 2 pounds off a building and a ball that ways 1 pound off the building at the same time the lighter ball would hit the ground first because its lighter and so they heavier it is the slower it drops the lighter it is the faster it drops
Explanation:
Answer:
Hello, I don't really have an actual answer, but I was hoping you could explain it to me? I have the same project and I am kind of confused.
Explanation:
Thank you and have a great day :)
what does this graph represent?
A. speed
B. velocity
C. acceleration
D. momentum?
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
Answer:
i think the answer is letter C. From 35°c to 45°c
Explanation:
sorry if it is wrong
553.5 mL ?:cm^3
how do i get my answer? and what is the answer?
Answer:
553.5 cm3
Reason:
1 mL = 1 cm3
Can somebody give me some backup for this question?
8. What is the [H+] of a solution with a pH of 4.78
Answer:
7.01 is the answer of the [H+] of a solution with a pH of 4.78
How can you tell if atoms of two different elements will form polar covalent or nonpolar covalent bonds??
Is it true or false?
Answer:
false
Explanation:
because i know it
HELP ME PLEASE I NEED THE ANDEER NOW
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
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 .
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?
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.
SOMEONE SMART HELP PLS!!
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.
Answer:
A good hydrogen ion acceptor
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
Answer:
1. thermometer
2. thermal energy
3. specific heat
4. temperature
5. Celsius
6. heat
7. mass
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?
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%
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.
Answer:d
Explanation:
Answer:
A mixture has different properties throughout; a pure substance has the same properties throughout.
Explanation:
How many atoms are there in 0.655 moles of C6H14?
Answer: 3.94 x 10^23 molecules
Explanation: hope this helps!
Complete the Replication and Transcription of the following DNA Sequence:
GGAGTTACAGTTAGTA
Replication (DNA to DNA):
Transcription (DNA to RNA):
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:
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
Answer:
noble gases from what i learnt
Any idea for science project acccept digestive system
A ball shaped like a sphere has a diameter of 12 centimeters. Which measurements is closest to the volume
of the ball in cubic centimeters?
Calculate the net force on the object below.
98 N up
10 N down
10 N up
0 N
Answer:
first we add the same direction. 12N + 32 N=44N .
then we add the forces. 54 up + 44N down= 10N up
what are the products of the reaction with their coefficients C2H18+O2?
Answer:
2C2H18 + 13O2 → 4CO2 + 18H2O (I balanced your equation)
Products - CO2 & H20
Match the items to use the analogy of time to the vocabulary of chemistry.
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!!!
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.
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
someone please ASAP
the options are
1. BF.
2.B4
3.B2F2
3.BF3
Answer:
B4
Explanation:
good day
3. Ammonium hydroxide, known for its pH control abilities, is used in food production as an effective antimicrobial agent. What is the correct formula for ammonium hydroxide?
The study of chemicals and bonds is called chemistry.
The correct answer is [tex]NH_4(OH)[/tex].
Ammonium hydroxide is the base that helps to increase the ph of the solution and helps to neutralize the acidic effect.
The uses of ammonium hydroxide are as follows:-
Reduce the acidic effectIn bakeryIn medicineThese are the use of ammonium hydroxide.
Hence, the correct answer is [tex]NH_4(OH)[/tex].
For more information, refer to the link:-
https://brainly.com/question/12985618
How do scientists know a reaction in dynamic equilibrium hasn't just stopped?
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
how can you tell how reactive an element is?
How many moles are in 45.5 g of P2O5 ?
Answer:
0.327214 mol
Explanation:
45.5/278.106=0.163607
Then, 0.163607x2= 0.327214