The rate of a reaction would be one-fourth.
Further explanationGiven
Rate law-r₁ = k [NO]²[H2]
Required
The rate of a reaction
Solution
The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.
Can be formulated:
Reaction: aA ---> bB
[tex]\large{\boxed{\boxed{\bold{v~=~-\frac{\Delta A}{\Delta t}}}}[/tex]
or
[tex]\large{\boxed{\boxed{\bold{v~=~+\frac{\Delta B}{\Delta t}}}}[/tex]
The concentration of NO were halved, so the rate :
[tex]\tt r_2=k[\dfrac{1}{2}No]^2[H_2]\\\\r_2=\dfrac{1}{4}k.[No]^2[H_2]\\\\r_2=\dfrac{1}{4}r_1[/tex]
Answer:
C. The rate would be one-fourth.
Another option would be:
The rate would be four times larger
Depending on what class you're taking.
Explanation:
25cm3 of a 0.4M sodium hydroxide solution was diluted into 250cm3 of water. What is the molarityof the resultant solution.
Answer:
0.04 M
Explanation:
From the question given above, the following data were obtained:
Initial volume of solution (V1) = 25 cm³
Initial Molarity of solution (M1) = 0.4 M
Final volume of solution (V2) = 250 cm³
Final Molarity of solution (M2) =?
We can obtain the final Molarity of the solution by using the dilution formula as illustrated below:
M1V1 = M2V2
0.4 × 25 = M2 × 250
10 = M2 × 250
Divide both side by 250
M2 = 10/250
M2 = 0.04 M
Therefore, the resulting molarity of the diluted solution is 0.04 M
helpppp:)))))))))ahhhh
Answer:
Calcium
Explanation:
Note the yellow lines which show attractions between the molecules. Why do you think these attractions occur?
Convection currents in Earth's mantle are caused by the rise of hot material rising towards the crust, becoming cooler and sinking back down. This process occurs repeatedly, causing the currents to constantly flow. The movement of the currents plays a factor in the movement of the mantle.
Answer:
True or False
Answer - True
Explanation:
The mantle convection clearly describes how the mantle moves, transferring heat from the white-hot core to the lithosphere. The mantle is usually being heated below and the cooling happens above and the general temperature of the area gets dropped over a long period of time.
Hot buoyant Magma is being transferred through convection currents, to the lithosphere at the plate boundaries and hot spots. Also, convection current moves cooler materials from the crust to the interior of the earth through a process that is widely known as subduction.
How are S waves and surface waves similar?
Both arrive after P waves.
Both compress the ground.
Both travel through liquids.
Both produce minimal ground motion.
I will give out brainliest
Answer:
The answer to this question is A. Both arrive after P waves
Explanation:
Because since P waves always come first surface and S waves come after.
Which of the following are physical properties?
1. Water freezes at 0°C.
2. Diamonds are the hardest known substance.
3. Sugar is capable of dissolving in water.
4. Vinegar reacts with baking soda.
5. Most metals are malleable.
6. Most metals react with acids.
7. The density of acetic acid is 1.05 g/mL.
8. The length of a piece of aluminum foil is 12.2 cm.
9. Copper conducts electricity.
Answer:
1,2,3,5,7,8,9
Explanation:
are all physical properties
c) Ammonia is added to copper sulphate solution till excess?
List all the layers of the atmosphere and give one SENTENCE description or characteristic for each layers.
Answer:
Troposphere, stratosphere, mesosphere, and thermosphere.
Explanation:
Troposphere - It is the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.
Stratosphere - It is the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere).
Mesosphere - It is the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.
Thermosphere - It is the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.
Answer:
The First layer is the troposphere. The troposphere is what we live in. It creates weather for us. Second layer is the Stratosphere. You will find the ozone layer in it. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Life as we know it wouldn't be possible without this layer of protection. Third layer is Mesosphere. The Mesosphere is very important for earth's protection. The mesosphere burns up most meteors and asteroids before they are able to reach the earth's surface. Fourth layer is Thermosphere. The Thermosphere absorbs the sun radiation making it very hot.
Explanation:: I don't know if you include this one but the fifth layer is the Exosphere. Although the exosphere is the most distance layer of earth's atmosphere it is the layer that is the planet's first line of defense against the sun's rays. It is also the first layer to come into contact and protect the earth from meteors, asteroids, and cosmic rays.
An object that mass a lot of mass for a unit volume is said to be very: O high in calories There is not enough information to answer the question dense O loud O None of these answers
Answer:
There's not enough information because it just says "a lot of mass" no definite numbers or "masses"
How many moles of oxygen are required to produce 37.15 g CO2? 37.15 g CO2 = mol O2
Answer:
0.84 moles of oxygen are required.
Explanation:
Given data:
Mass of CO₂ produced = 37.15 g
Number of moles of oxygen = ?
Solution:
Chemical equation:
C + O₂ → CO₂
Number of moles of CO₂:
Number of moles = mass/molar mass
Number of moles = 37.15 g/ 44 g/mol
Number of moles = 0.84 mol
Now we will compare the moles of oxygen and carbon dioxide.
CO₂ : O₂
1 : 1
0.84 : 0.84
0.84 moles of oxygen are required.
Genetics is the study of
what causes a change in air pressure
A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are
produced on each of the electrodes. The sample is -
a. an element
b. an alloy
c. a compound
d. a polymer
The sample here is a compound. The correct option is c.
What is a compound?A chemical compound is a substance made up of many identical molecules that contain atoms from more than one chemical element and are held together by chemical bonds.
A molecule made up of only one element's atoms is thus not a compound.
The anode undergoes oxidation, while the cathode undergoes reduction. The species being oxidized provides the electrons.
An electrode in an electrochemical cell is referred to as an anode or a cathode depending on the direction of electron flow.
The electrode reacts with the electrolyte at the anode, producing electrons.
These electrons build up at the anode. Meanwhile, another chemical reaction occurs at the cathode, allowing that electrode to accept electrons.
Thus, the correct option is c.
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The overall long-term effects of air pollution are not yet certain.
True
False
Answer:
its true
Explanation:
because I made sure it was true and it is
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d8
What element is represented by the ground state electron configuration shown above?
Answer:
Pd (palladium).
Explanation:
46 electrons total, this is representative of the Pd (palladium) element.
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Palladium (Pd) element is represented by the ground state electronic configuration.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
The ground state electronic configuration of 1s² 2s² 2p⁶3s² 3p⁶4s² 3d¹⁰ 4p⁶ 5s² 4d⁸ shows total 46 electrons. The element with atomic number 46 is palladium, Pd. Palladium is a d block element. Palladium is found in group 8 and period four of periodic table.
Therefore, palladium (Pd) element is represented by the ground state electronic configuration.
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Which change to the setup is least likely to cause an increase production of bubbles?
Adding a bright light source.
Adding a source of carbon dioxide to the water.
Adding a different fluid to the water.
Adding a second plant to the test tube.
Answer:
D, adding a second plant to the test tube
22.
An example of amphoteric oxide is
A. Al2O3.
B. CaO.
C. Cuo.
D. SiO2.
E. K20.
Fu** please help
Answer:
A (option) .............
Answer:
Al2O3
Explanation:
ZnO,Al2O3,PbO2 are some of the amphoteric oxides
Amphoteric oxides are metal oxides that can react with both acids and bases,so Aluminum oxide can react with both HCl and Sodium hydroxide which is a base
Determine the products of this unbalanced reaction: Select all that
apply
Ba
+
N2
-
Ba3N2
BaN2
Ba2N
BaN
BaNO2
Answer:
Ba3N2
Explanation:
valency of barium is+2and nitrogen is-3.
B. The mass of the sugar and water is greater than the mass of the sugal
C. The mass of the sugar solution is greater than the mass of the sugar and water.
D. We do not have enough information to determine anything about the mass of the sugar, water, or the
sugar solution.
8. When combined in the correct ratio, hydrogen and oxygen atoms can form water as show below.
+
Hydrogen
Oxygen
Water
this example, water is an example of which of the following?
Answer: it’s the first one ☝️
Mass NEVER changes
Is the modern periodic table arranged based on atomic mass?
HELPP ILL GIVE BRAINLIEST
Answer: its b
Explanation:
1. What three characteristics determine the type of sedimentary rock?
Answer:
Characteristics of Sedimentary Rocks. ● The color of the sedimentary rock is determined by the content of the strata that were pressed together to form it. If the layers have a high organic content, the rock is usually gray to black in color. On the other hand, high amount of minerals give the rock the color of the mineral.
Hopefully, this helps! :D
Answer:
texture
color
and another one is, well
What conclusion can she make from her experiment?
Heather is testing a substance as to whether it is
organic or inorganic. She works with the solid
substance and discovers it can conduct electricity
without burning. She also knows the carbon to oxygen
ratio is 1 to 2
O The substance is organic because it is solid at room
temperature.
O The substance is organic because it cannot burn
readily
O The substance is inorganic because it has carbon.
The substance is inorganic because it conducts
electricity
Answer:
Im pretty sure the answer is D
Explanation
Answer:
Answer D
Explanation:
___ ___ ___ ___ ___ P ___ ___ ___ ___ ___ ___ ___ mediums allow light to pass through
Answer:
I thought the answer was " T R A N S P A R E N T " but I don't know what the extra two letters are! I'm sorry, that's all I've got..
What is the molecule that formed between B and F?
Answer:
BF3
Explanation:
For this question, you need to use the number of valence electrons present in each element. Boron is in group 3/13 on the periodic table so you know it has 3 valence electrons while Fluorine is in group 7/17 so it has 7 valence electrons. These elements are both covalent so they will share electrons. All elements in the first three rows want to reach either have 8 valence electrons or zero valence electrons depending on whichever is easier. When B and F interact each Fluorine will only want to take one electron, but Boron wants to get rid of all 3 electrons, so it will bond with 3 Fluorine to get rid of all its valence electrons.
I hope this helps.
Battery
Lightbulb
Metal
paper
clips
Wood
Motal noodle
Wire
Why does the bulb light when the needle touches a paper clip?
point
1. convection cells are produced
2. vibrations set up wavelike disturbances
ОООО
3. a circuit is completed
4. a phase change occurs
Answer:
A circut is comepleted
Explanation:
The bulb light when the needle touches a paper clip because the circuit is completed.
What is circuit?An electronic circuit comprises of individual electronic components like resistors, diodes,transistors , capacitors,etc. which are connected to each other by means of wires through which electric current flows.It can also be referred to as an electronic circuit.
It usually comprises of at least one active component . The combination of wires and simple and complex components allows operations to be performed, amplification of signals, displacement of data and performing of computations.
There are three types of circuits , an analog circuit ,a digital circuit and a mixed circuit which is combination of digital and analog circuits , even semiconductors are used in circuits.
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when it is cold in your house
Answer:
yep.
Explanation:
I love to wear oversized hoodies and I get soft comfy blankets and watch movies. Have a nice night! :)
14. HCOOH is an example of
A. alcohols.
B. aldehydes.
C. carboxylic acids.
D. ethers.
E. ketones.
Answer:
carboxylic acid is the answer
Explanation:
Plz mark brainliest
Which of these are qualititative descriptions?
A
Horror Films
B
78 Baboons
C
1 Dollar
D
1,000,000,000 Nugget
Please I need help I really don’t get this lol
Answer:
The pointer pointing to the grey and white balls are either proton or nuetron i van't really tell cause their grey and white.
The whole clster of balls is the Nucleus
The black balls on the lines are electrons
And the lines are the energy level
Explanation:
How many atoms are in a 0.50 g sample of helium