Answer:
4NO2 + 2Na2O + O2 → 4NaNO3
I do need immediate answers, this is taking a bit of time for me to figure out
a shiny silver spoon became dull and black over time. What most likely happened to the spoon?
A. The metal mixture began to separate
B. The metal reacted with air to form a new substance
C. Dirt collected on the shiny metal
D. The metal dissolved into a black tarnish
Answer:
The Answer to your question is
A. the metal mixture began to separate
Explanation
Just took the quiz
Answer:
the answer is C in usatestprep 1,11,and 111
Explanation:
SOME HELP ASAP I NEED THIS DUE IN A few MINS
Remember I need TWO answers
Answer:
it might be B and A maybe im not 100 percent sure
79. Which best describes what is made of matter? (1 point)
all living things and objects
all atoms
all solid objects and atoms
all living things
Answer:
all living things
Explanation:
Hello ?? I need help I just started 6th grade and I’m new to this someone plz help me I’m begging I’ll give you brainlest and that’s a PROMISE !!
Answer: revolve:
365 days
causes seasons
rotate:
causes day and night
spins
go around
the one that has one earth goes in rotate the other one goes in revolve
Answer:
causes day and night goes in rotate365 days goes in revolvespins goes in rotate24 hours goes in revolvecauses seasons goes in rotationgo around goes in revolveExplanation:
Earth is closer to the sun and revolves around it in about 365 days. Sentences: Earth revolves around the sun in 365 days, 5 hours, 59 minutes and 16 seconds. The time a planet takes to revolve around the sun is called a year there for 365 days would be revolve.
It takes the earth abut 24 hours, or one day, to make one complete rotation. At the same time, the earth is moving around the sun. This is called a revolution there for 24 hours is revolve.
the spinning of the earth is called rotation therefore its rotate.
Earth rotates on its axis; this causes us to experience day and night. But Earth's axis is tilted 23.5 degrees (the angle is measured between Earth's equatorial plane and the plane in which it orbits our Sun) therefore causes day and night is rotate.
Instead, Earth has seasons because our planet's axis of rotation is tilted at an angle of 23.5 degrees relative to our orbital plane, that is, the plane of Earth's orbit around the sun. The tilt in the axis of the Earth is called its obliquity by scientists therefore causes of seasons is rotate.
Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution therefore earth spins goes in revolve.
Which example is a container holding a heterogeneous mixture? * 1 point Bowl of clear chicken broth. Balloon filled with He gas. Bottle of water. Glass jar filled with mixed US coins.
Answer:
Bowl of clear chicken broth
Explanation:
A bowl of clear chicken broth is a heterogenous mixture.
A heterogenous mixture is one in which the constituents exists in at least two different phases. A chicken broth is a heterogenous mixture which exists in the liquid - solid state. The broth is made up of simmered meat, vegetables and other recipes together.Such mixtures can be:
Gas - liquids mixturesLiquid - solid mixturesGas - solid mixturesA broth is an extract from cooking chicken. Some vegetables and extract are mixed together in a nutritious blend.
How are
viscosity, the size and shape of particles
and internal friction related
Answer:
With the addition of heat, liquid particles move faster, decreasing viscosity. However, the addition of heat to gas particles causes them to collide with each other more often, increasing the viscosity. ... Particles with larger size and shape collide more often, increasing internal friction.
Explanation:
hope this helps you !!
plz ANSWER Energy exerted when a force of ____ N is applied over ____m of distance is called a__________
Answer:
1 newton over 1 meter is called a joule
Explanation:
i learned it before
Why do atoms with greater numbers of protons have greater electronegativity?
Answer:
the positivity charged protons in the nucleus attract the negatively charged elections.bas the number of protons in the nucleus increases, the electronegativity or attraction will increase
Why do some transition metals have multiple oxidation states?
Transition metals have multiple oxidation states because of their___
__ sublevel.
Answer:
Tbh I rlly don’t kno why
Explanation:
These ppl are waxk
Answer:
partially filled d sublevels
Explanation:
C. What kind of charge do protons have?
What is the mass of a proton?
Answer:
Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.
Answer:
A proton has positive charge of 1
1.6726219 × 10^-27 kilograms
Explanation:
Which of these rules is applicable to subtracting two values that have different numbers of decimal places (for example, subtracting 2.1 from 2.15)? The answer is less accurate than either value. The answer is more precise than either value. The answer has the same number of decimal places as the least precise value. The answer has the same number of significant figures as the most precise value.
Answer:
The answer has the same number of decimal places as the least precise value.
Explanation:
i just took the test on edg or whatever its called but trust me i got 100.
These rules is applicable to subtracting two values that have different numbers of decimal places (for example, subtracting 2.1 from 2.15) will be "The answer has the same number of decimal places as the least precise value."
What is decimal?The accepted method for representing both integer but also non-integer numbers would be the decimal digit system.
What is numbers?A number is a numerical unit of measurement and labelling in mathematics.
These rules is applicable to subtracting two values that have different numbers of decimal places (for example, subtracting 2.1 from 2.15) will be "The answer has the same number of decimal places as the least precise value."
Therefore, the correct answer will be option (C).
To know more about number and decimal.
https://brainly.com/question/548650
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two samples of water, 10 grams and 50 grams are in sperate cups which of the following properties is different for the two boiling point, color density or volumn
Answer:
volume
Explanation:
The volume of the two samples of water will be different because volume is the amount of space occupied by a body. It is dependent on the amount of materials it contains.
The 50g sample will have a higher volume compared to the 10g sample. The boiling point and density are intensive properties and do not depend on the amount of matter present. Since both samples are from the same source, they will have the same color.Answer:
its volume
Explanation:
As temperature increase and the volume stays constant, how will the pressure change
Answer:
There will be more collisions and so a greater pressure. The number of particles is proportional to pressure, if the volume of the container and the temperature remain constant. ... Volume is inversely proportional to pressure, if the number of particles and the temperature are constant.
What does mitochondrial exactly mean ?
mitochondrial is a disease that has long-term side effects that is often inherited. Due to this, your body may fail to produce energy effectively.
4. The compound iron sulfide can be formed by
filtering b. evaporating heating
a.filtering
C.heating
d. mixing
Answer:
When iron sulfide is exposed to oxygen it reacts rapidly, releasing large amounts of heat.
Explanation:
i took this from my notes- so whatever aligns with that. sorry if this didnt help but i think its genuinely c heating
All of the following undergo hybridization except
A. C
B. Si
C. Mg
D. B
Answer:
C: Mg
Explanation:
Hybridization of atomic orbitals is a fundamental concept introduced by Pauling that describes the mixing of orbitals at an atom which adds a definite direction to the Lewis - shared electron pair or electron chemical - bond concept.
Carbon(C) can hybridized on sp, sp2 and sp3 simply because it's valence shell gives room for it.
For silicon(si), when forming covalent bonds with other atoms, it's 3s and 3p orbitals are mixed with each other to form new hybrid orbitals.
Magnesium in itself doesn't hybridized except in magnesium hydrides.
Boron orbitals(B): when boron forms bonds with three other atoms like borazine, they are hybridized to either the sp2 or hybridized to the sp3 which occurs when boron forms bonds with four atoms just as is in metal borohydrides.
Food contains what form of energy?
-Nuclear
-Gravitational
-Radiant
-Chemical
Answer:
Chemical energies
Explanation:
We get chemical energy from foods, which we use to run about, and move and talk (kinetic and sound energy). Chemical energies are stored in fuels which we burn to release thermal energy - this is one way of making electricity, see Electricity for more information.
Science helPPPPPPPPP MEEEEEEEEE RIGHT NOW
In a balanced equation, the number of each type of atom on the reactant side ____________ the number of each type of atom on the product side.
Doubles
Equals
Halves
Tripples
Answer:
Equals
Explanation:
What is the relationship between the number of chromosomes in sperm/egg cells compared to regular cells?
A: sperm/egg cells and regular cells have the same number of chromosomes
B:sperm/egg cells have the twice the number of chromosomes as regular cells
C:sperm/egg cells have the half the number of chromosomes as regular cells
D:sperm/egg cells have the triple the number of chromosomes as regular cells
Methanol and ethanol are said to be miscible in one another. What does this tell you?
Answer:
That they are miscible in one another
How do you determine the chemical reactivity for nonmetals by using the periodic table?
Answer:
In Non-metals
Period - reactivity increases as you go from the left to the right. Group - reactivity decreases as you go down the group.
Explanation:
true or false: some organisms reproduce by cell division
Answer:
True
Explanation:
identify the type of bond shown in the figure. explain your reasoning.
Answer:
could you please provide more info for the question you want an answer for?
Explanation:
pls help with these question because I don't understand what are pure substance and how to tell
Answer:
i am pretty sure its A
Explanation:
they are etheir together like black and white or some sort of pattern if notice.
If they are like B,C,D like that they are mixtures which are NOT PURE SUBSTANCE'S.
Answer:
option A is your answer.
Explanation:
Reason being is because that for the diagram if all of the little dots are connected another single dot then it is a pure but if one little dot isn't connected to another one then it isn't a pure substance.
Hope this helps!!!
What is the example of artificial selection
Answer:
Dog breeding is another prime example of artificial selection. Although all dogs are descendants of the wolf, the use of artificial selection has allowed humans to drastically alter the appearance of dogs
Explanation:
State the mass number and the atomic number of colbalt-60
In any experiment the accuracy of the data and experiment can be improved. What are some things that can be done to improve data and experiment accuracy?
Choose all that apply:
Conduct more trials.
Add more controls.
Add less controls.
Add more variables
Add less variables
Choose a different person to do the experiment.
Answer:
Conduct more trials.
Add less variables.
Choose a different person
Explanation:
More trials gives plenty of data to be examined.
Less variables makes for less confusion, and less things to keep track of.
Different person ensures that the experiment is not being done by one single person who could be messing up the data
Answer:
conduct more trials, less variables, more controls
Explanation:
more trials make it so if something goes wrong you have other data, less variables because you should only test one variable at a time, more controls helps set your base line for the experiment
The density of pure solid copper is 8.94 g/mL. What volume does 34 g of copper occupy?
hey there ! :
Density = 8.94 g/mL
mass = 34 g
Volume = ??
Therefore:
D = m / V
8.94 = 34 / V
V = 34 / 8.94
V = 3.803 mL
Hope this helps!
What type of weathering will occur more rapidly in an area with extremely cold winters and hot summers?
Answer:
mechanical weathering through the process of ice wedging
Explanation:
Answer:
In cold climates, the freezing and thawing that occurs causes rapid mechanical weathering through the process of ice wedging. In warmer climates, chemical weathering is more rapid because the chemical reactions that dissolve rocks and minerals are accelerated by warm temperatures.
Explanation:
:)
