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Pwease just answer it on a correct answer and I'll give swome THANKS and 5 RATINGS.. Especwially I'll MARK IT AS BRAINLIEST..
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Answers
1. matter
2. oxygen
3. water
4. hydrogen
5. compound
hope it helps :)
Related Questions
please help
sorry if it’s a little hard to read
Answers
Explanation:
Potassium=19, metal
Nitrogen=7, nonmetal
Silver=47, metal
Iron=26, metal
Sodium=11, metal
Magnesium=12, metal
Oxygen=8, nonmetal
Copper=29, metal
Calcium=20, metal
Chlorine=17, nonmetal
Arteries
have very thin walls
o appear bluish in color
o carry blood away from the heart
connect capillaries and veins
Answers
Answer:
carry blood away from the heart
what type of cells are these?
(Plant or animal)
Answers
Answer:
5 is an animal cell, 6 is a plant cell
Explanation:
hope this helps!
6.Plant because that looks like the cells on a crease of a leaf
Hope this helps
Plz help if you can!
Name these Ionic Compounds: ( Al is Aluminum and Cl is chlorine)
1. AlI3
2. K3N
3. Cs2O
4. CaCl2
5. LiBr
Answers
Answer:
Aluminum Iodide
Potassium Nitride
Caesium Oxide
Lithium Bromide
Explanation:
Which of the following changes will lead to an increase in the rate of dissolving.
a. increasing the surface area of the solute
b. stirring the solution
c. increasing the temperature of the solution
d. All of the above
Answers
Ultraviolet light from the Sun can
Answers
Answer:
Can cause sunburn, premature aging of the skin and damage molecules in skin cells
Explanation:
Answer:
pueden afectar directo al adn de las celulas de la piel y son causantes de las quemaduras del sol
Explanation:
How does molecular shake affect polarity?
Answers
Answer:
I believe its A
Explanation:
A molecule that has a symmetrical shape will be a nonpolar molecule.
help asap show work | a gas with a volume of 13L at a pressure of 197 kPA is allowed to expand to a volume of 23L. what is the pressure of the container if the temperature remains constant
Answers
Answer:
111 kPaExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{13 \times 197000}{23} = \frac{2561000}{23} \\ = 111347.826...[/tex]
We have the final answer as
111 kPaHope this helps you
8. Calculate the pH of a solution if the [OH-] concentration is 0.015 M.
A) 1.82
B) 8.82
C) 12.18
D) 4.32
Answers
Answer:
1.82
Explanation:
pH is given by the equation
if the hydrogen ion concentration [H+] in a solution is 1.87 x 10^-11M what is the [OH-]
Answers
By using pH formula, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.
What is pH?
The pH scale is a measurement of hydrogen ion concentration that is used to determine the acidity as well as alkalinity of a solution.
Calculation of [OH-] by using formula of pH.
Given data:
[H+] = 1.87 x [tex]10^{-11} M[/tex]
[OH-] = ?
Calculation of [OH-] is shown below:
It can be calculated by using the formula:
pH = -log [H+]
Put the value of concentration of hydrogen ion [H+] in above formula.
pH = -log (1.87 x [tex]10^{-11} M[/tex])
pH = -log (1.87) -log ( [tex]10^{-11} M[/tex])
pH = -0.27 +11
pH = 10.73
Now, use the formula, pH +pOH = 14
pOH = 14 - pH
pOH = 14 - 10.73
pOH = 3.27
Now, use formula pOH = -log [OH-]
[OH-] = [tex]10^{-pOH}[/tex]
[OH-] = [tex]10^{-3.27}[/tex]
[OH-] = 5.3 ×[tex]10^{-4}[/tex] M
Therefore, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.
To know more pH
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4. In the following reaction: 2NaN3 decomposes to form 2Na + 3N2. If 500 grams of NaN3 decomposes to form 320 grams of Na, how much Na is produced?
180 grams
320 grams
500 grams
Answers
mass of NaN₃ → moles of NaN₃ → moles of Na → mass of Na
500 g NaN₃ ×
1
mol NaN₃
65.01
g NaN₃
= 7.69 mol NaN₃
7.69 mol NaN₃ ×
2
mol Na
2
mol NaN₃
= 7.69 mol Na
7.69 mol Na ×
22.99
g Na
1
mol Na
= 176.8 g Na
Using Mass of N₂
You must make the following conversions:
mass of N₂ → moles of N₂ → moles of Na → mass of Na
323.20 g Na ×
2
mol N₂
28.01
g N₂
= 11.539 mol N₂
11.539 mol N₂ ×
2
mol Na
3
mol N₂
= 7.692 mol Na
7.692 mol Na ×
22.99
g Na
1
mol Na
= 176.85 g Na
plssss show your work will mark the brainliest
Answers
Answer:
135.16 mL
Explanation:
From the question,
Applying,
PV/T = P'V'/T'.................... Equation 1
Where P = Initial pressure of the gas, V = Initial volume of the gas, T = Initial Temperature of the gas in Kelvin, P' = Final pressure of the gas, V' = Final Volume of the gas, T' = Final temperature of the gas in Kelvin.
Make V' the subject of the equation
V' = PVT'/TP'................... Equation 2
Given: P = 600 torr, V = 115 mL, T = 50 °C = (50+273) K = 323 K, T' = 75 °C = (75+273) K = 348 K, P' = 550 torr
Substitute these values into equation 2
V' = (600×115×348)/(323×550)
V' = 24012000/117650
V' = 135.16 mL
How long does it take the Earth to move from Point A to Point C?
Answers
Answer:
the answer should be six months
You place a balloon in a closed chamber at standard temperature and pressure (STP). You triple the chamber pressure.
What happens to the balloon?
The volume stays the same.
The volume increases to three times its original volume.
The temperature must also change for the volume to change.
The volume decreases to one-third of its original volume.
Answers
Answer:
it pops?
Explanation:
if the original volume of a gas was 300 ml at 0.250 atm and 400.0 k what is the volume of the gas at 2.00 atm
Answers
Answer:
the answer is 18.75
HELP ASAP! 20 POINTS
Answers
which scale is most precise?
which scale is most accurate?
Answers
It’s most precise bc it goes to thousandths but it’s also closest to 1 making it most accurate.
write word equation for the reaction between dil hydrochloric acid with zinc oxide
Answers
Answer:
Zinc Oxide + Dil. Hydrochloric Acid -----> Zinc Chloride + Water
The reactant which is consumed completely in a reaction is called the excess reactant. TRUE or FALSE
Answers
Answer:
False
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A container has a volume of 5.85 L and a pressure of 4.25 atm. What will the volume be
If the containers pressure is changed to 2.75 atm?
Answers
Answer:
9.04 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{4.25 \times 5.85}{2.75} = \frac{24.8625}{2.75} \\ = 9.0409...[/tex]
We have the final answer as
9.04 LHope this helps you
Identify the type of reaction occurring based on the description
below:
"Sodium hydroxide reacts with iron (III) chloride."
What type of reaction is this?
a Double displacement
b
Decomposition
C Synthesis
d Combustion Reaction
Answers
Answer:double displacement
Explanation:I just did it
Stronger acids are those that -
O more completely inhibit polarity in water
O exhibit hydrogen bonding
O hold on to their protons more strongly
O lose their protons more easily
Answers
When the pressure is in a certain gas cylinder with a volume of 4.50 L reaches 500atm, the cylinder is likely to explode. If this cylinder contains 40.0 moles of argon at 25.0°C, is it on the verge of exploding? Calculate the pressure
Answers
Answer:
The cylinder is nit on the verge of exploding.
Explanation:
Temperature= 25.0°C
The conversion of T(°C) to T(K) is shown below:
T(K) = T(°C)+ 273.15
So,
T=(25.0 + 273.15) K = 298.15 K
Volume= 4.50 L
Moles= 40.0 mol
Using ideal gas equation as:
PV = nRT
where,
P is the pressure
V is the volume
n is the number of moles
T is the temperature
R is gas constant having value = 0.0821 Latm/ K. mol x 298.15 K
⇔ P= 217.58 atm
Pressure limit = 500 atm .
Fill in the blanks with the correct word from the word choices:
The ___________ orbits the ____________ which orbits the_______________. Word choices: Sun, Earth, Moon.
Answers
Answer:
The Moon orbits the Earth which orbits the Sun.
Explanation:
What are the three components of a circuit
Yup I’m a kid-
Answers
Answer:
it's B(Energy source,conductor and receiver)
Pls help! DO NOT GIVE ME A LINK AS AN ANSWER!
Recall the equation M, V1 = M2V2. Based on the presence of this amount of copper sulfate, complete the table to predict the concentration of the solution as water is added to the tank or removed from it. Don't actually change the amount of water in the tank yet. Type the correct answer in each box. Use numerals instead of words. Express each answer to two significant figures e. Volume (L) Concentration (mol/l) 1.0 0.80 0.60 0.50 0.20
Answers
Answer:
(top to bottom)
0.50
0.63
0.83
1.0
1.3
2.5
Explanation:
Answer: Answers are from top to bottom (Edmentum)
0.50
0.63
0.83
1.0
1.3
2.5
Explanation:
The car is heading north covering a distance of 500 meters in 20 seconds. What is the car’s velocity?
Answers
Since it is traveling 500 meters in 20 seconds, you would divide the two.
500/20=25
Have a nice day!
The four structures that both prokaryotic and eukaryotic cells have are
Answers
Hello! Greetings from Turkey! :)
* Cell membrane
* Cytoplasm
* DNA and RNA
* Ribosome
GOOD LUCK!!
What does it mean for heat to be transferred by radiation?
A. Energy is transferred through converting bond energy to kinetic
energy
B. Energy is transferred when one molecule collides with another.
C. Energy is transferred when molecules absorb electromagnetic
waves.
D. Energy is transferred through moving currents of warmer air or
liquid.
SUBMIT
Answers
Answer:
C.
Explanation:
Heat transfer by thermal radiation is transfer of heat by electromagnetic wav
The meaning for heat to be transferred by radiation is energy is transferred when molecules absorb electromagnetic waves.
What are electromagnetic waves?Electromagnetic waves are the waves of electromagnetic field. Examples are radio waves, x-rays, and gamma rays.
These waves carry through space with carrying electromagnetic radiations.
Thus, the correct option is C. Energy is transferred when molecules absorb electromagnetic waves.
Learn more about electromagnetic waves
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WHAT INVESTMENT OF A $125 WOULD HAVE THE MOST LASTING VALUE FOR YOUR FUTURE?
A pair of jordans
Some nice cologne or perfume
3 college credits at MCC BAG
a dinner with 2 or 3 people
Answers
Answer:
a pair of jordans
Explanation: