Answer:
zero
Explanation:
For a single atom, the charge is the number of protons minus the number of electrons. Find the charge by balancing charge in a compound.
Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the charge on an atom is written as a superscript.
What is Ions?Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.
Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state. The charge on an atom is written as a superscript.
Therefore, the charge on an atom is written as a superscript.
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What is the ratio of NH4+ ions to NO3- ions?
Answer:
Explanation:
3:4
4+ * 3 = 12+
3- * 4 = 12-
Therefore they cancel out to become neutral! As the HCF of 3 and 4 is 12!
Which of these has the highest electronegativity value based on the trend?
A. Calcium
B. Barium
C. Carbon
D. Oxygen
a 10 kg box sits on the floor. approximately how high would you have to lift the box to increase gravitational potentail energy by 350j
Answer:
3.5 meters
Explanation:
sodium Sulphate solution was added to a solution of barium chloride till complete precipitation of Barium Sulphate. the mass of the isolated precipitation after filtration and drying was found to be 2 grams. calculate the mass of barium chloride in the solution. ( O= 16, S= 32, Ba=137, Cl=35.5)
Answer:
These two solutions react to form a white insoluble precipitate.
BaCl
2
+Na
2
SO
4
→2NaCl+BaSO
4
↓
This is a double displacement reaction as the two compounds exchange their ions to form two different compounds.
Explanation:im unsure if this is correct but lmk if its not
Can someone plz help and fast don't write a whole paragraph just the facts so i can write it myself because i have no clue what to do
Two seventh grade students are riding in a car and listening to music on the radio.
How would the students increase the amplitude of the sound waves of the music?
Question 2 options:
Turn the volume up to create more energy
Turn the volume down to create less energy
Turn the volume up for a higher frequency
Turn the volume down for a slower frequency
Answer:
A. Turn the volume up for more energy.
Explanation:
The reason why this is the correct answer is because the louder the music gets the more energy it puts out therefore the answer is option A.
The students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
What is energy?Energy is defined as a quantitative quality that is conveyed to a person or a physical system and is discernible in the way work is done as well as in the way heat and light are produced. A conserved quantity is energy. According to the law of conservation of energy, energy can change its form but cannot be created or destroyed.
Sound waves are defined as the pattern of disruption brought on by energy's passage through a medium when sound travels away from its source. Pressure waves are produced by the vibration of objects and are known as sound waves. A sound source, such as the vibrating speaker's diaphragm in a stereo, produces the sound waves.
Thus, the students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
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Helium and nickel are classified as _____, which are pure substances that make up all kinds of matter. Group of answer choices
Answer:
Elements..............
*
Si atoms have
valence electrons.
2
4
6
8
Answer: 4
Explanation:
What is the density of a sample of 65.0 mL of automobile oil
having a mass of 59.82 g?
Answer:
0.92 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 59.82 g
volume = 65 mL
We have
[tex]d = \frac{59.82}{65} \\ = 0.920307...[/tex]
We have the final answer as
0.92 g/mLHope this helps you
Scientists classify clouds by their_ and their weather patterns
Answer:
Clouds are classified according to their height above and appearance (texture) from the ground.
Explanation:
The following cloud roots and translations summarize the components of this classification system: 1) Cirro-: curl of hair, high; 2) Alto-: mid; 3) Strato-: layer; 4) Nimbo-: rain, precipitation; and 5) Cumulo-: heap. Hope this helps :)
Identify the reactants and products in this chemical equation below:
C2H6 + O2 --> CO2 + H2O
a
Carbon is the reactant
b
C2H6 + O2 are the reactants, CO2 + H2O are the products
c
H2O is the product
d
CO2 + H2O are the reactants C2H6 + O2 --> are the products
which is it A B C or D?
Answer:
Option B
Explanation:
Remember that the products are on the right side of a chemical equation while the reactant is on the left.
In this case we have...
C2H6 + O2 ⇒ CO2 + H2O
Since C2H6 and O2 are on the left side that would mean they're the reactants, while CO2 + H2O are the products. Which means your answer is option B or "C2H6 + O2 are the reactants, CO2 + H2O are the products."
Hope this helps.
which of the following can be used as chopping board because it is hard?
A. Glass
B. Rubber
C. Wood
D. Copper
lodine (1) , What are the correct number of valance electrons
Answer: Iodine,
, is located in period 5, group 17 of the periodic table, and has an atomic number equal to
53
.
plss brainleist
Explanation:
An acid is used to bring the pH of a solution from pH 9 to pH 6. How many times more acidic is the final solution than the initial solution
Answer:
The final solution is 1.5 times more acidic than the initial solution
Explanation:
What is the formula for Tetracarbon octahydtide?
Answer:
Tricarbon octahydride has the formula C 3 H 8.This means it has three carbon atoms and eight hydrogen atoms.
Explanation:
Answer:
C3 H8
uR wElCOme
Write the chemical formulas for carbon dioxide, water, and oxygen.
Answer:
Carbon Dioxide: CO2
Water: H2O
Oxygen: O2
what characteristic of an element differs between isotopes?
Science answer all questions for 30 points
Answer:
scam it says 15 points
Explanation:
What concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide?
Concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide at 0.75 M concentration.
What is concentration ?Concentration is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.
The amount of solute that has dissolved in a specific amount of solvent or solution is measured as solution concentration. A concentrated solution is one that has a significant amount of dissolved solute in it. A diluted solution is one that has a little amount of dissolved solute in it.
Concentration is the ratio of the volume of the solution ( V ) to the mass of the solute ( m ) that is dissolved in it. C = m / V. Molality, mole fraction, and molarity are the three methods for calculating the concentration of a solution.
Molarity, molality, mass percentage, parts per thousand, parts per million, and parts per billion are examples of quantitative units of concentration.
Thus, option C is correct.
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help Asap for Brainlist
Answer:
the third option
Hope this helps
Или кислотой с базы можно хранить в одном контейнере? Обоснуйте ответ!
can someone help with these 3 Questions
Answer:
there is only one pic
Explanation:
but if its oki can u type itt
Question 1 (1 point)
Which object has a net force of zero acting on it?
Question 1 options:
a football flying through the air
a cat running after a mouse
a flowerpot sitting on a table
a speeding car
Question 2 (1 point)
Which object has unbalanced forces acting on it?
Question 2 options:
a sweater sitting on a store shelf
a letter sitting in a mailbox
a fence around a garden
a leaf falling to the ground
Question 3 (1 point)
What happens to the motion of an object when the forces acting on it are balanced?
Question 3 options:
The object changes direction.
The object's motion does NOT change.
The object slows down.
The object speeds up.
Question 4 (1 point)
When unbalanced forces act on an object that is in motion, the object can:
Question 4 options:
change speed, direction, or both.
only slow down.
only change direction.
only speed up.
Question 5 (1 point)
TRUE or FALSE: a balanced forces is one in which the net force is zero.
Question 5 options:
True
False
Please help! Ill give 20 points!!
* I hope this helps you with your quiz!.Please check the explanations for further understanding. (I recommend reading them in order.) Have a whimsical week!
Answers:
1. a flowerpot sitting on a table
2. a leaf falling to the ground
3. The object's motion does NOT change.
4. change speed, direction, or both.
5. True
Explanations:
1. Net force is the sum of the forces acting upon an object. Often, this will be shown through diagrams with arrows pointing in certain directions and a certain amount of Newtons. A net force of zero means that the object is steady and stable in its motion (whether moving or staying still). With zero net force, an object will not change its speed nor direction. A football in the air is not the answer as gravity pulls it back down towards Earth, creating a change in both speed and direction. A cat running after a mouse is likely not the answer as well. Realistically, the cat and mouse will not continue at a constant speed in the exact same direction forever. Thus, a cat running after a mouse does not make sense. A flowerpot sitting on a table is not moving at all. It is not changing speed or direction; therefore, it does have a net force of zero. A speeding car is, well, speeding. Its speed is changing, just as the answer claims. Since a flowerpot sitting on a table is the only answer choice that has a net force of zero, it is the answer.
2. Unbalanced forces are unequal forces acting on one another from/in different directions. Unbalanced forces must be moving in some way. If they are not, then the forces are equal and balanced instead. They have to be changing direction and/or changing speed. A sweater sitting on a store shelf does not move at all; it never changes direction nor speed. It is an example of balanced, not unbalanced, forces. A letter sitting in a mailbox is just like the sweater - it doesn't change speed or direction, so it can't be an unbalanced force. A fence around a garden is planted firmly into the ground, thus unable to move in the first place. With no change, it is a balanced force, rather than an unbalanced one. A leaf falling to the ground is, according to the wording of the answer choice, currently falling. Gravity is acting upon it and pulling it towards the ground. Since the leaf falling is in motion, or moving, there are unbalanced forces acting on it (specifically gravity pulling the leaf down). Therefore, the falling leaf is an instance of unbalanced forces.
3. Balanced forces are the opposite of unbalanced ones - they are equivalent forces that act in opposite directions in order to contradict/cancel each other. Since balanced forces are, well, balanced, neither one will overpower the other. No chance will occur as long as the forces remain balanced (ones). This lines up directly with Isaac Newton's first law of motion, which states that an object will continue to be at rest, or continue in a constant speed and direction, unless acting on by an external force. The external force will unbalance the forces, thus causing a change in speed and/or direction. Therefore, since balanced forces are forces that will not change speed nor direction, the answer should be that the object's motion does not change.
4. As stated earlier, unbalanced forces act in different directions with different amounts of power/Newtons. One must be/is more powerful than than rest; this is so that the unbalanced forces can be, you know, unbalanced. Unbalanced forces can cause a change in speed and a change in direction (it can be both or only one). Thanks to this information, we can conclude that the answer to this question is to change speed, direction, or both.
5. Balanced forces and a net force of zero are both included in the first law of motion. Both of these forces will continue at a consistent speed and direction until acted upon by another force. Since both of these terms have the same definition, it is reasonable to say that they are synonyms (which they are). Balanced forces and zero net force mean the same thing (and are the same thing). So, it is true that balanced forces is when the net force is zero.
The object has a net force of zero acting on it is a flowerpot sitting on a table. A leaf falling to the ground has unbalanced forces acting on it.The object's motion does not change when the forces acting on it are balanced.When unbalanced forces act on an object that is in motion, the object can change speed, direction, or both.The statement a balanced forces is one in which the net force is zero is true.
What is a force?Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.
It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.
The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.
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Help Asap for Brainlist
Answer:
it is true
Explanation:
hope this helps (please mark me brainlist if you can)
Answer:
It’s false because noble gases are only in the p block and this notation finishes in the s block
Explanation:
what is the difference between Temperate grassland and Desert????????
what is the difference between Temperate grassland and Desert??
Question 1 (1 point)
Why can a solution be classified as a mixture?
Question 1 options:
Both are made up of two substances that are not chemically combined.
Both are always homogeneous.
It is made up of only one substance.
Both are made up of two substances that are chemically combined.
Question 2 (1 point)
Which choice is an element?
Question 2 options:
air (N2 mixed with O2 , and CO2 )
oxygen (O2 )
sodium chloride (NaCl)
water (H2O )
Question 3 (1 point)
Which choice is a compound?
Question 3 options:
air (N2, O2 mixed with CO2)
carbon (C)
carbon dioxide (CO2 )
oxygen (O2)
Question 4 (1 point)
Which choice is a mixture?
Question 4 options:
carbon dioxide (CO2)
oxygen (O2)
air (N2 mixed with O2 and CO2)
carbon (C)
Question 5 (1 point)
How is a pure substance different from a mixture?
Question 5 options:
A pure substance is heterogeneous.
Pure substances cannot be separated by physical means.
A mixture is made of one substance.
Mixtures cannot be separated by physical means.
Please help!! You get 20 points!
question 1 : Both are made up of two substances that are not chemically combined
question 2 : oxygen (O2 )
question 3 : carbon dioxide (CO2 )
question 4 : air (N2 mixed with O2 and CO2)
question 5 : Pure substances cannot be separated by physical means.
2. Which of the following is an example of "chiming in"?
taking shorter showers
picking up trash
buying snacks in bulk rather than in individually wrapped packages
encouraging friends and family to cut back on their use of natural resources
Answer:
encouraging friends and family to cut back on their use of natural resources
Explanation:
I absoulutly know this is the correct answer.
What are the challenges for a "sustainable" world of lithium ion batteries?
Its for chemistry
The Lithium-ion Battery Problem
Overheating. They overheat and explode if charged too fast.
Short life time. They die after less than 1,000 charge/discharge cycles.
Flammable. They use chemicals that are flammable. ...
Toxic. ...
Underperform in extreme temperatures. ...
Expensive casing. ...
Expensive to transport.
What wavelength in nm does a photon with a frequency of 9.23 x 10^18 hz have?
Answer:
tyeh
Explanation:
4403 9324 7244 25886543322267
e. Determine the experimental specific heat capacity of the copper. Show your
work.
(I forgot to add this on my last question :3)
Answer:
trust me u are wasting ur time here
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