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Which metal reacts spontaneously with NiCl2(aq)?
A) Au(s)
B) Cu(s)
C) Sn(s)
D) Zn(s)
Answers
Answer:
THE answer IS B)cu(s)
Explanation:
HOPE ITS HELP
The metal reacts spontaneously with aqueous solution of NiCl₂ is Zinc as it is more reactive.
What is reactivity series?Electro chemical series is a reactivity series which tells about the reactivity of the metals present in any solution in the increasing order.
According to the reactivity series, Zinc is present at the upper position as compares to other three given metals and their reactivity will be represented as:
Zn > Ni > Sn > Cu > Au
So, zinc will replace the nickel atom from NiCl₂ solution.
Hence option (D) is correct.
To know more about electrochemical series, visit the below link:
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Related Questions
Which student had to stop to adjust a pedal during the race? (Student A or Student B) Explain your answer.
Answers
Answer:
student b
Explanation:
Answer:
student b
Explanation:
there was no constant rate of change when it gets to 800.. he stays there
Which of the following points is/are true for plasma?
(1) It is a very good conductor of electricity.
(2) Gas is transformed into plasma state.
(3) It is influenced by magnetic and electric fields.
(4) All of the choices
Answers
Answer:
4 all of the choices. the rest of the answers are correct so it's all of the choices
4. Fill in the chart to compare the four common types of data tables.
Type of table
Example of how it is used
Shows a list of related pieces of data
I
Two column table
Table with several columns
Organizes all data from a study. The
headings describe how the study was done.
Answers
Answer:
the DisciplineCoordinator have nth to say that I Don't want to keep you updated on your answer and I said that she was joking about the day yesterday
Explanation:
that's good to hear I'm not sure what you are controlling the DisciplineCoordinator
Please help me por favor :'(
Answers
which two kinds of information would best help describe the climate of Denver
Answers
Answer: A and B
Explanation:
Answer:
A & B
Explanation:
What of the following is the BEST statement about dependent and independent variables?
1. A dependent variable is a factor that changes because of procedures conducted on the independent variable.
2. An experiment can have more than one of either kind of variable; you just have to keep your data straight.
3. An experiment can have several independent variables but only one dependent variable.
4. An independent variable is a factor that changes because of procedures conducted on the dependent variable
Answers
Max and Jimmy want to jump on a trampoline. Max begins jumping in a steady pattern, making small waves in the trampoline. Jimmy starts jumping on the trampoline too. Suddenly, Max goes twice as high even though he did not put any extra effort into jumping.
What type of wave interaction is this? Explain how it occurred.
Answers
Because there is one wave interfering with the other. They are both separate waves with completely different patterns, and they are running into each other.
Hope this helps! :)
Answer: The wave interaction described in the scenario is known as constructive interference.
Explanation:
Constructive interference occurs when two waves meet and combine in such a way that their amplitudes add up, resulting in a larger wave. In this case, Max's steady pattern of jumping creates small waves on the trampoline, with a certain amplitude.
When Jimmy starts jumping on the trampoline, his waves combine with Max's waves. If the peaks and troughs of both waves align perfectly, they will add up, resulting in a wave with a larger amplitude. This alignment of peaks and troughs leads to constructive interference, causing Max to go twice as high without any additional effort.
The reason behind this phenomenon lies in the nature of waves. When waves meet, their amplitudes can either add up or cancel out, depending on their relative positions. In the case of constructive interference, the peaks of one wave align with the peaks of the other wave, and the troughs align with the troughs, resulting in an increased amplitude. Conversely, in destructive interference, the peaks align with the troughs, leading to a cancellation or reduction in amplitude.
So, in the scenario, Jimmy's waves align with Max's waves in such a way that their amplitudes combine constructively, resulting in Max going twice as high on the trampoline without exerting any extra effort.
Let’s say there are 2 planets similar in size, but one has much more mass. How will that affect the number of moons?
Answers
Answer:
0 because no value of mass at to be same
josebrilston
answer this plz i want to givbe you a brainliest!!!!
Answers
Hurry
A student uses this diagram to understand the parts of a fish. The student then uses an identification key to classify different types of fish.
Based on the key, which of these fish is most likely a bluegill?
The ferst imige is for the qwestion the rest are the answers
Answers
Answer:
The 3rd image is a blue gill
this is a term used to describe something helpful. in this case it is a helpful microorganism
Answers
Answer:
Beneficial
-----------------------------------------------------------------------------------------------------------------
FUN FACT
What are helpful microorganisms?
Lactic acid bacteria (from the genus Lactobacillus) are essential for making yoghurt and cheese. Molds are used in the fermentation of certain cheeses, especially blue cheeses like Roquefort and Stilton
What happens to the atoms that make up hydrogen fuel as it burns?
Answers
Answer:
When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.
Explanation:
How can a charged balloon attract a wall without any contact?
A) The positive charges of the uncharged wall move to the outside.
B) The wall changes shape and the positive charges move to the inside.
C) The negatively charged balloon repels and moves away from the wall.
D) A positive charge in the balloon attracts the negative charges in the wall.
Answers
hope this helps :)
In the following images, a blue circle represents an atom of one type of element, and a red square represents an atom of a second type of element. Determine which of them represent a pure substance, a homogenous mixture, and a heterogeneous mixture.
Are these in the right order?
Answers
Answer: No they are not. "Pure substance" is supposed to be placed in the middle picture. "Homogenous mixture" is supposed to be placed in the right picture. "Heterogenous mixture" is supposed to be placed in the left picture.
Explanation:
Pure Substances:
There are two categories of pure substances: elements and compounds (In our case, we have a compound).
Element (e.g. the blue circles or the red squares):
An element is a fundamental substance.An element cannot become simpler than itself, even if chemical separation methods are used.Compound (e.g. the blue circles bonded together with the red squares in the middle picture):
A compound is a substance made of two or more elements in fixed proportions (i.e. One element has the same amount as the other).A compound can be made into individual elements or simpler substances using chemical methods of separation.Mixtures:
There are two categories of mixtures: homo- and hetero- genous.
Homogenous mixture:
The substances or elements are mixed to look like one single substance and cannot be told apart (e.g. When salt dissolves in water, the water still looks like water).The substances or elements are distributed evenly throughout the apparatus. The number of different types of substances or elements can vary (e.g. There is more water than salt) The substances or elements do not bond together.Heterogenous mixture:
The substances or elements are mixed and can be told apart (e.g. When oil is mixed with water, the oil is "water-hating" so it forms its own layer on the bottom, while the water forms another layer on top of the oil layer).The substances or elements are distributed where one type of substance or element is bunched up in one spot and another substance or element in another spot.The number of different types of substances or elements can vary.The substances or elements do not bond togetherThe second Image is not a homogenous mixture, it is a heterogenous mixture as two different types of elements are mixed together.
The mix of two different types of elements in the heterogenous mixture is not uniform and has uneven mixed types.
The third image is a homogenous mixture as even though two different types of elements are together, they are not mixed with each other.
Unlike in the heterogenous mixture, in a homogenous mixture, there is a uniform mix of two different types of elements.
The first image is correct, the image depicts a pure substance.
To understand better about the Substances:
https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Foundations_of_Introductory_College_Chemistry/04%3A_Matter/3.5%3A_Pure_Substances_and_Mixtures
what does chemlcal change mean
Answers
Answer:
a chemical change is a change that changes the substance into a whole new substance.
Examples include: burning wood, a banana peel rotting, milk souring, and even your food/drinks digesting.
G
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still
able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
O liquid and solid
Mark this and return
Save and Exit
Next
Submit
Answers
Answer:
Solid and gas
Explanation:
I just need help all I need is the answer please some one
Answers
Answer: The correct fill-in-the-blank answers are:
1. through binary fission (already filled in)
2. be resistant to penicillin
3. through asexual reproduction.
4. cell replicates before
5. a simpler process
Explanation:
The correct fill-in-the-blank answers are:
1. Bacteria reproduce through binary fission (already filled in)
2. A parent bacterial cell is able to survive in the presence of antibiotic penicillin. Subsequent generations from this parent will be resistant to penicillin
3. Something that potatoes and bacteria have in common is that they both reproduce through asexual reproduction.
4. In asexual reproduction DNA from the parent cell replicates before it produces daughter cells.
5. Asexual reproduction is a simpler process than sexual reproduction.
Know more about Bacteria: https://brainly.com/question/6941760
_____________________ are trying to create better batteries that can store more energy, so that electric cars can travel further on one charge.
Answers
Answer:
options?
Explanation:
i mean scientists fits so if any of the options have a scientist thats it
Answer:
Scientists, Chemists, engineers, inventors there is a wide range of answers but if there are options (like A. scientist B. chemists and so on) you need to edit your question and put them in
Explanation:
What type of person studies and collects data on the weather?
Answers
(Planet X is earth without tilt.)
if the The amount of daylight received by the Northern Hemisphere on Planet X would
change or not change throughout the year.
Answers
Why are some incomplete fossils able to be pieced together? Full fossils of large animals can be found together. Hard tissue, like bone, never breaks or chips. Fossils require salt water to be preserved fully. Impressions from the skin can be preserved.
Answers
Answer:
Explanation:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
Answer:
The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains are dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.
Jing opens a bottle of ginger ale, and the pop starts to frizz. Is the pop (while in fizz motion) a solution or a mechanical mixture?
Answers
Answer:
mechanical
Explanation:
It is a mechanical mixture because u can see the different kind of mixtures in the ginger ale.
What physical property of mercury makes it best suited for use in a thermometer
Answers
Answer:
High coefficient of expansion
Explanation:
It is only mercury that is in liquid form at room temperature. It works on the principle of thermal expansion, it expands when heated and contracts when cooled. The very minute change can be notable by the use of mercury in the thermometer. So this property of the thermometer makes it suitable for measuring temperatures.
Which choice describes an organism found in the understory of a rainforest? Responses
A. Palms and other small trees
B. Very tall trees
C. Bacteria
D. Thick, woody vines
Answers
Answer: Palms and other small trees
Explanation:
Answer:
A. Palms and other small trees
Explanation:
Understory Layer
Located several meters below the canopy, the understory is an even darker, stiller, and more humid environment. Plants here, such as palms and philodendrons, are much shorter and have larger leaves than plants that dominate the canopy. Understory plants’ large leaves catch the minimal sunlight reaching beyond the dense canopy.
https://brainly.com/question/21423132
The mass of Betelgeuse is about ___ times the mass of Vega
(This is not multiple choice.)
Answers
Therefore, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.
Vega is a main-sequence star located in the constellation Lyra. Betelgeuse is a red supergiant star located in the constellation Orion. The mass of Betelgeuse is observed to be about 20 times the mass of the Sun, while the mass of Vega is estimated to be about 2.1 times the mass of the Sun. Therefore, the mass of Betelgeuse is theoretically estimated to be around 9.5 times the mass of Vega.
Experimentally,
The mass of Betelgeuse is 2.188 x10^31 kg
The mass of Vega is 4.246 x 10^30 kg
Hence, the mass of Betelgeuse is about 17.634 kg/ 9.5 times the mass of Vega.
To learn more about Betelgeuse and Vega,
https://brainly.in/question/31136305
What caused the behavior of the plant in the diagram above?
Answers
What causes the behavior of the dying plant is that it´s either getting to much water and to little and needs more sunlight and heat and less coldness.
Answer:
c. excessive humidity
Explanation:
because there could be to little of heat or sunlight or to much or to little of water
At what temperature does ice melt? (Celsius plss)
Answers
Answer:
at 0 degree celcius ...
What testable questions can you ask to determine what factors affect the strength of these magnetic fields?
Answers
Answer:I
Explanation:have a good day
Explanation: I’m sorry thanks
Which statement best describes properties of elements? A) All elements have a similar structure and hardness. B) All elements are either metals or gases. C) All elements are solid and magnetic. D) All elements have mass and occupy space
Answers
Answer:
D
Explanation:
That is the right answer
The frequency of a D-sharp sound wave in music is 380 Hz, and its wavelength is 0.95 m. What is the wave speed?
Answers
Answer:
462
Explanation:
Answer: I think is 380m wave speed
Explanation: