Explanation:
most common elements that bond with oxygen is Hydrogen (H2) to form water
Which type of reaction is
NaOH + KNO3 NaNO3 + KOH
-->>
Answer:
Explanation:
NaOH + KNO3 --> NaNO3 + KOH. combustion. CH4 + 2 O2 --> CO2 + 2 H2O. single displacement. 2 Fe + 6 NaBr --> 2 FeBr3 + 6 Na. double displacement.
What is the purpose of an indicator in a titration.
Answer:
The role of indicator in titration is to detect the endpoint of the titration. When the colour of the solution changes, it indicates that the concentration of the chemical specie has reached a critical range. This change in colour is possible with the help of indicators.
Explanation:
hope it helps
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correct me if I'm wrong and if correct brainliest me please
look at the chemicals listed below and answer the questions . iron
water
sand
oxygen
gold
carbon dioxide
helium
carbon
rust
seawater
1. Name the two metals
2.Name a gas that is not an element
3.Name a mixture
4.Name a non metallic element that is a solid .
Answer:
1. gold and rust
2. carbon dioxide
3. sea water
4. carbon
Answer:
1. Gold and Iron
2. Helium
3. Seawater
4.Rust
Explanation:
2. Is the following sentence true or false? Most earthquakes generate
tsunamis.
If a sample of air in a school container was heated, would the percentage of oxygen in the air increase, decrease, or remain unchanged?
Answer:
increase
Explanation:
Let's suppose we have a sample of air in a closed container. We heat the container and we want to predict what would happen to the pressure.
According to Gay-Lussac's law, the pressure of a gas is directly proportional to its absolute temperature.
Thus, if we increased the temperature of the air by heating it, its pressure would increase.
If a sample of air in a closed container was heated, the total pressure of the air would increase.
5.20763 to three significant figures
Answer:
5.21
Explanation: You can only have 3 digits, so you would round to the hundredths place
I need help ASAP my final 20 points!!!
During an investigation, a student mixes two liquids in a beaker. The student recorded the following observations in her science notebook.
I. Both liquids are clear prior to mixing.
II. Both liquids are room temperature prior to mixing.
III. The liquid turned pink when mixed.
IV. The temperature of the liquid increased.
V. Over time, a white solid formed at the bottom of the beaker.
Required:
What are evidence of a chemical reaction?
Answer:
3, why because most of the time chemicals reacts within eachother to make new compound that's may lead the liquid chemicals to deflect some of the spectrom of light like red,yellow,blue
To solve such this we must know the concept of chemical reaction. There are so many ways to identify the chemical reaction. Therefore the correct options are option 3, 5.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved that is mass can nether be created nor be destroyed in a chemical reaction.
There are so many types of chemical reaction reaction like combination reaction, double displacement reaction. The evidence of a chemical reaction are "the liquid turned pink when mixed" and "over time, a white solid formed at the bottom of the beaker".
Therefore the correct options are option 3, 5.
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what are two possible ways to show the structure of ch4?
Answer: Two possible ways to show the structure of CH4 are its electron dot diagram or structural formula. CH4 or methane's molecular formula is given as CH4. The structural formula is a graphical representation of a chemical compound.
Answer:
using electron dot diagrams or structional formula
how many structures are possible for a square planar molecule with a formula of ax3y?
Answer:
Explanation:
Depending upon the relative arrangements of XandY X a n d Y , the square planar molecule AX3Y A X 3 Y shows only the following structure: Hence, only one structure is possible for a square planar molecule with a formula of AX3Y A X 3 Y .
-
Which image shows in nonrenewable resource?
Answer:
1
Explanatio
right on edge
Among the given images, the one which is an example of non-renewable source of energy is image -1 the cooking gas is a petroleum product and it is non-renewable.
What are non-renewable energy sources?Non-renewable energy sources are sources of energy that come from finite resources that cannot be replenished on a human timescale. They are called non-renewable because their reserves are being depleted faster than they can be replenished. These energy sources include:
Fossil fuels: Coal, oil, and natural gas are the three main types of fossil fuels. They are formed over millions of years from the remains of plants and animals that lived long ago. Fossil fuels are currently the most widely used sources of energy for electricity generation, transportation, and industrial processes.
Nuclear energy: Nuclear energy is produced through the process of nuclear fission, which involves splitting atoms of uranium or plutonium to release energy. Nuclear power plants generate electricity using this process.
Non-renewable energy sources are a major contributor to greenhouse gas emissions, which contribute to climate change. As a result, there is a growing need to transition to renewable energy sources that are sustainable and have a lower environmental impact.
Here, image 1 - cooking gas is non-renewable.
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What is Nuclear fusion
Answer:
Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
what is the number of the atom in 1 mole of methanol CHɜOH ?
Which of these questions can be answered using science?
What is the best career?
Does water exist on Venus?
Should the use of automobiles be stopped?
Which is the most interesting subject to study?
Answer:
B. Does water exist on Venus?
Explanation:
The first question, " which is the best career " isn't answered by science since it's subjective. different individuals will have different views, but I believe, whatever field a particular person like is the best field career. The third question is a " computer and technology " related question along with It being subjective while the forth
the question, just like the up to two questions, it's also subjective but the second question is in fact understandable by science.
Answer:
Does water exist on Venus?
Explanation:
This answer would be answered using science because venus is another planet and we don't have access to it, the only way we would know would be if scientists traveled there and explored it.
What is changing if you're accelerating?
Answer:
Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
hope I help you ☺️❤️⭐
Answer:
your speed
Explanation:
If you start to accelerate, you are bound to move faster
Potassium is a silvery-white, solid metal. Chlorine is a greenish-yellow gas. When these two elements react chemically, they yield potassium chloride which is an odorless salt with a crystal structure. Potassium chloride is used in the production of fertilizer.
Required:
Which part of atomic structure is responsible for the reactivity of atoms?
The electrons present in the valence shell of an atom are responsible for the reactivity of atoms.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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when an electron is acquired by a neutral atom, the energy change is called
Answer:
when an electron is acquired by a neutron atom, the energy change is called its electron affinity
When an electron is added to a neutral atom to create a negative ion, the energy of the atom changes (in kJ/mole). This is how electron affinity is defined. Alternatively put, the possibility of the neutral atom receiving an electron.
What is electron affinity ?The amount of energy released when an electron binds to a neutral atom or molecule in the gaseous state to produce an anion is known as the electron affinity of an atom or molecule.
Although there is a slight distinction between the two, electron gain enthalpy is occasionally also referred to as electron affinity. The amount of energy released when an electron is added to a single gaseous atom is known as the electron gain enthalpy.
The amount of energy released when an atom receives an additional electron is known as its electron affinity. The gaseous state is when electron affinities are measured. On the periodic table, electron affinities tend to shift from negative to positive as we move from left to right.
Thus, when an electron is acquired by a neutral atom, the energy change is called as electron affinity.
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PLEASE help in the middle of a test: When table salt forms, which action occurs between the reacting elements?(1 point)
Answer:
don't know if this is what your looking for but it might be a NEUTRILIZATION REACTION.
Answer:
i think its sodium donates an electron to chlorine
Explanation:
Elements that become cations during bonding become smaller as a result.
A.
True
B.
False
B. Number the digestive process in the correct sequence. Write A-E on the blank 21. Food moves into the small intestine. 22. Food is stored and further broken down by acid and powerful enzymes 23. Your saliva helps break down what you're eating and turn it into chemicals called enzymes. 24..Food moves through your esophagus. 25. Anything left in the small intestine moves into the large intestine
Answer:
21. D (Food moves into the small intestine.)
22. C (Food is stored and further broken down by acid and powerful enzymes.)
23. A (Your saliva helps break down what you're eating and turn it into chemicals called enzymes.)
24. B (...Food moves through your esophagus.)
25. E (Anything left in the small intestine moves into the large intestine.)
Explanation:
Food first enters the mouth where it is chewed and broken down by salivary amylase. Then, it is swallowed, moving down the esophagus to the stomach where it is stored and further broken down by acids and enzymes. And, these broken down food molecules moves into the large intestine.
Alkaline batteries adopted their name from the _____ that is present in the reactions at both the zinc anode and the MnO2 cathode.
Answer:
hydroxide ion
Explanation:
The alkaline battery got this name because it has an alkaline electrolyte of potassium hydroxide.
Please helppp asapppp due soon ignore the answers i put in their wrong
Methane has the chemical formula of CH4 and would, therefore, it would be
considered...
Answer:
compound
Explanation:
A compound contains more than one element.
Methane's chemical formula (CH4) indicates that it consists of one carbon atom and four hydrogen atoms.
Therefore, methane is a compound.
Would an alkaline earth metal make a good replacement for tin in a tin can?
Answer:
Definitely not. This is because the alkaline earth metal [basically group 2 elements] are reactive and will react with the contents of the can, contaminating it.
No, alkaline earth metals would not be a good replacement for tin in a tin can because alkali from alkaline earth metals react with tin and release hydrogen.
What are alkaline earth metals?Alkaline earth metals are present in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
They are called alkaline earth metals because their hydroxide and oxides are highly alkaline. Their metal oxides are found in the earth's crust.
These metals have 2 electrons in their outer shell, and they are highly reactive, so they will react with the tin in a tin can.
Thus, alkali from alkaline earth metals react with tin and generate hydrogen, hence they would not make an acceptable replacement for tin in a tin can.
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State of Matter refers to _______.
Answer:
matter refers to anything that has mass and volume which occupies space
HELP!!!!
Which of the following has the smallest electron affinity?
а К
b Ca
C Li
d Na
e Mg
Answer:
e. Mg.
Explanation:
Answer:
[tex]mg[/tex]
is the answer to your question
why do i have white spots on my teeth after brushing?
why don't elements in a group have consicutive atomic numbers?
Answer:
Periods have consecutive atomic number as they are in a row and groups are vertical meaning they are in a column and groups have similar properties
How are elements arranged on the periodic table?
Question 10 options:
boiling point
atomic mass (# of protons and neutrons)
density
atomic number (# of proton
Answer: They are arranged by atomic number.
HOW DO THE FOLLOWING COMPARE IN THE AMOUNT OF ALCOHOL THEY CONTAIN: 12 OZ. BEER(5% ALCOHOL), 12 OZ. WINE COOLER(5% ALCOHOL), 1 1/2 OZ. OF 80 PROOF LIQUOR, 5 OZ. OF WINE(12% ALCOHOL)?
The amount of alcohol contained in each of the listed beverages can be compared as follows; 1/2 oz of 80 proof liquor > 5 oz of wine (12% alcohol) > 12 oz of wine cooler (5%alcohol) = 12 oz of beer (5%alcohol) .
A drink that contains alcohol must be an intoxicating beverage. The extent of intoxication of an alcoholic beverage depends on the amount of alcohol that the beverage contains. There are various types of alcoholic beverages as listed in the question.
The amount of alcohol contained in each of the listed beverages can be compared as follows; 1/2 oz of 80 proof liquor > 5 oz of wine (12% alcohol) > 12 oz of wine cooler (5%alcohol) = 12 oz of beer (5%alcohol) .
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