Answer:
Respiration
Explanation:
Respiration is the system of how an animal breathes
Fill in the blanks with the correct word from the word choices:
The ___________ orbits the ____________ which orbits the_______________. Word choices: Sun, Earth, Moon.
Answer:
The Moon orbits the Earth which orbits the Sun.
Explanation:
which scale is most precise?
which scale is most accurate?
The reactant which is consumed completely in a reaction is called the excess reactant. TRUE or FALSE
Answer:
False
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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
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 type of cells are these?
(Plant or animal)
Answer:
5 is an animal cell, 6 is a plant cell
Explanation:
hope this helps!
Ultraviolet light from the Sun can
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:
The four structures that both prokaryotic and eukaryotic cells have are
Hello! Greetings from Turkey! :)
* Cell membrane
* Cytoplasm
* DNA and RNA
* Ribosome
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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
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 .
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
How long does it take the Earth to move from Point A to Point C?
Answer:
the answer should be six months
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
Answer:
a pair of jordans
Explanation:
if the hydrogen ion concentration [H+] in a solution is 1.87 x 10^-11M what is the [OH-]
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.
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Name these Ionic Compounds: ( Al is Aluminum and Cl is chlorine)
1. AlI3
2. K3N
3. Cs2O
4. CaCl2
5. LiBr
Answer:
Aluminum Iodide
Potassium Nitride
Caesium Oxide
Lithium Bromide
Explanation:
HELP ASAP! 20 POINTS
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
Answer:
the answer is 18.75
The car is heading north covering a distance of 500 meters in 20 seconds. What is the car’s velocity?
What are the three components of a circuit
Yup I’m a kid-
Answer:
it's B(Energy source,conductor and receiver)
Arteries
have very thin walls
o appear bluish in color
o carry blood away from the heart
connect capillaries and veins
Answer:
carry blood away from the heart
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?
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
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
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:
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
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
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
plssss show your work will mark the brainliest
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
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
Answer:double displacement
Explanation:I just did it
write word equation for the reaction between dil hydrochloric acid with zinc oxide
Answer:
Zinc Oxide + Dil. Hydrochloric Acid -----> Zinc Chloride + Water
please help
sorry if it’s a little hard to read
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
How does molecular shake affect polarity?
Answer:
I believe its A
Explanation:
A molecule that has a symmetrical shape will be a nonpolar molecule.
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
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
Answer:
1.82
Explanation:
pH is given by the equation
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.
Answer:
it pops?
Explanation: