Answer:
The number of protons plus the number of neutrons
Explanation:
Answer:
The mass number is equal to the total number of protons and neutrons in the nucleus of an atom.
Explanation:
WILL MARK BRAINLIEST
Use the chemical equation to complete the activity.
2Cu+S→Cu2S
Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the chemical equation. A scientist adds 4 grams of Cu to 2 grams of S to start the reaction. At the end of the experiment, she has 6 grams of product. In one to two sentences, explain what would happen if the scientist increased the amount of copper to 6 grams, and why
The result of the reaction when the scientist is added more copper then the amount of product increases. If copper is increased to 6 g then the product copper sulphide increases to 9 g.
What is copper sulphide?Copper sulphide is a compound made by metallic copper and sulfur gas. As per the reaction, two moles of copper is required to react completely with one mole of sulfur. Thus copper is the limiting reactant here.
It is the limiting reactant in a reaction that decide the final yield of the product. It is given that, 4 g of copper produced 6 g of the product then, the mass of product produced by 6 grams of copper is calculates as follows:
mass of product = (6×6)/4 =9 g
Hence, if the amount of copper is increased to 6 g, the product increases to 9 g.
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pls help its due in a few minutes
Answer:
Theory
Explanation:
PLEASE HELP DUE SOON!!
View the model and answer the question below.
In 1-2 complete sentences, identify the black lines and explain what they represent
Answer: They are magnetic lines and these lines depict the invisible magnetic field around the magnet! Hope this helps I got it right on my quiz :)
Explanation:
Which branch of chemistry specifically deals with quantitative analysis?
Answer:
analyitical
Explanation:
Answer: Analytical chemistry
Explanation:I just finished this question
Which form of energy is harnessed by a windmill that uses wind to turn a turbine to generate electricity? A) gravitational potential energy B) geothermal energy C) kinetic energy D) potential energy
Answer:
I am 90% sure its kinetic energy
Explanation:
Convert 145 m/s to km/hour. using dimensional analysis.
Answer:
522 Kilometers per Hour
Explanation:
Hi there! :)
Answer:
[tex]\huge\boxed{522 km/hour}[/tex]
[tex]\text{Express 145 m/s as a fraction:} \frac{145m}{s}[/tex]
[tex]\text}Convert to km/hour by multiplying by the equivalents in terms of meters and seconds to cancel out the units}[/tex]
[tex]\frac{145m}{sec} * \frac{3600 sec}{1 hour} * \frac{1 km}{1000 m} = \\\\\text {Cross out similar units and multiply the coefficients:}\\\\\frac{145 * 3600 * 1km}{1 * 1hour * 1000} = \frac{522000km}{1000hour}= 522 km/s.[/tex]
any body from america
Answer:
no
Explanation:
:-[:-[:-[:-[:-[:-[:-[:-[:-[
Answer:
Hi yes
Explanation:
Element in group 14 can obtain a +4 or -4 ion charge? *
Answer:
yes, all the elements in group 14 can obtain a +4 or -4 ion charge
Explanation:
Is chalk impermeable or permeable?
Answer:
Permeable.
Explanation:
Most sediments of a chalky quality are permeable.
1. How many miles are in 1,000,000 centimeters
I already know the direct answer I just need help filling in the boxes in the picture above
36. Helium is an example of
a homogeneous mixture
b. a heterogeneous mixture
c. a compound
d. an element
What word chemical equation describes this chemical reaction?
Answer:
A chemical reaction is described by achemical equation, an expression that gives the identities and quantities of the substances involved in a reaction. A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow
Answer:
sodium + chlorine → sodium chloride
Explanation:
This was the answer straight from Plato. I hope that this helped you, please mark me the brainiest, like and rate my answer if it did! :)
In two or more complete sentences, describe how one of the occupations that you studied would use descriptive statistics when performing their job. Justify your answers in two or more complete sentences. in science
Answer:
I need an answer someone HELP MEEEEEEE
Nitrogen is an essential element of which molecules?
O Amino acids and nucleic acids
O Carbohydrates and lipids
Lipids and hydrocarbons
O Nucleic acids and hydrocarbons
PLEASE HELP!!!!!!!
Before the fire, the forest consists of large trees. After the fire, there is only ash. Explain what the law of conservation of matter suggests happened to the rest of the mass of the trees.
According to law of conservation of matter , the mass of the trees got converted fro one form of matter to another.
What is law of conservation of matter?According to law of conservation of matter, it is evident that matter is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.
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the volume of tea in a typical teacup 0.2
Given :
Some statements.
To Find :
The SI units in each case.
Solution :
1) It is seconds which is denoted by seconds.
2) It is mass and units are kg. ( Not pounds because S.I unit is kg )
3) Since, we are talking about length is so its meter.
4) SI units of volume is given by meter³.
Hence, this is the required solution.
I need help bad
Please I need helppoo
number 4 disksjaiskskaksmks
n atom “likes” to obtain a full outer shell. The fourth shell (in the atoms that we are studying today) can hold a maximum of 8 electrons. Think: Energetically, would the atom above “prefer” to give away its valence electrons or borrow some from another atom in order to fill its outer shell? Explain your reasoning
It depends on how many electrons are already in the outer shell.
If it is a large amount (if it is almost to the maximum), then it will want to borrow from another atom.
But if it is close to empty then it will want to give away so it will go back to the inner ring with will be full.
Hope this helps, good luck!
How many elements are in the periodic table?
What is 316 Kelvin in Celsius ?
Answer:
42.85 Celsius
Cell membranes are primarily made of a component that contains fatty acids. This component is most likely a. Carbohydrate. Protein. Nucleic acid Lipid
Answer:
Lipid
Explanation:
I just took the test and I got it right
Cell membranes are primarily made of fatty acids which are the components of lipids. Thus, the correct option is D.
What is a Cell membrane?A cell membrane may be defined as a biological membrane that separates the interior of the cell with respect to the outer environment. It provides overall protection to the cell from external damage.
The Cell membrane is made up of a phospholipid bilayer. This bilayer is amphipathic in nature. The phosphate group forms a polar head while lipid forms a non-polar tail.
Due to undissolved in water, lipids deliver stability to the cell membrane against the water.
Therefore, Cell membranes are primarily made of fatty acids which are the components of lipids. Thus, the correct option is D.
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Which activity performed by a medical professional is primarily based on an understanding of physics A. Determining whether the level of hemoglobin in blood is sufficient B. Using blood pressure monitor to find a patient's blood pressure C. Analyzing a patents blood test report to determine treatment D. Determining which tests a patient's needs E. Checking the color of a patient's eyes for suspected jaundice
Answer:d
Explanation:
why does the less reactive ion participate in electrolysis, instead of the higher reactive metal??
Answer:
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .
Explanation:
Yes ur well come
True or False, Valence electrons do NOT determine the chemical
properties of an atom. *
O True
О False
Yes true
I can't come up with a good explanation.
help me ill give 39 points and please help
Answer:
sunlight is independent/hours is dependent
on the y axis it's hours/x axis is sunlight
what do you mean by compounds?
Answer:
A compound is a substance that has two or more chemical elements whose atoms are bonded together. These atoms are chemically bonded in specific ways and in detailed proportions, and the substances cannot be readily separated through simple physical means.
hope this helped :)
Answer:
A compound is a pure substance consisting of two or more elements which have been chemically combined. Elements have a specific ratio in a compound.
Explanation:
e.g water is a compound made up of hydrogen and oxygen.
True or False When nitrogen enters a chemical reaction it is looking for three neutrons.
Answer:
False
Explanation:
Every chemical element undergoes a reaction in order to fulfill the completion of their outermost shell. This is the case of nitrogen (symbol "N"), which is an element found in group 5 of the periodic table with atomic number 7 (i.e. 1s2 2s2 2p3). It possesses three valence electrons in it's outermost shell.
Looking at the configuration of the Nitrogen atom, it requires three electrons to complete its electron shell. Hence, nitrogen will enter a reaction in order to have its need for THREE ELECTRONS met in order to have its electron shell full.
Note that, nitrogen enters a chemical reaction to look for three electrons not three neutrons.
Most elements' names end in the suffix -ium. This practice started around the year 1800, with many elements discovered before that having a more common name. However, some elements are more recently discovered and don't end in -ium. Do you notice any patterns for these elements?
Answer:
The last naturally occurring element to be discovered was francium (87) in 1939. Since that discovery, plutonium (94), neptunium (93) and astatine (85), which were initially created in the lab in 1940, have since been found in nature.
Explanation:
The -ium suffix is just a Latin suffix that creates abstract nouns, therefore, it's being used to construct scientific component names from their nomenclature origin, including such minerals (calcium from calx) or person names (gadolinium), and further discussion can be defined as follows:
This denotes a metallic element including platinum or barium. It's a group that forms positively charged ions: ammonia chloride, hydronium ion. It indicates a cellular structure, syncytium Etymology, New Latin, via Latin, via Greek -ion, small suffix.Its last found natural element found is francium (87) in 1939. Ever since, plutonium (94), neptunium (93), and astatine (85), which were synthesized inside the lab in 1940, have indeed been discovered throughout nature.Learn more:
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The study of Earth's solid material and structures, and the
processes that create them.
a Oceanography
b Meteorology
C Geology
d Astronomy
