0.00099989
3 sig figs, scientific notation
Please help!! This would mean so much to me!!
Answer:
I think it's the A one. Hope it's correct
Answer:
A option is correct
Explanation:
10. Which statement is the most important reason that some people feel that solar energy power can be a pollution-free energy source? *
A Electricity generation with solar cells produces no pollution.
B Electricity from burning fossil fuels is used to make solar panels.
C Extra materials from the manufacturing process can be collected and reused.
D The raw material for cells is sand, which is easily available without mining
The statement should refer to the most important reason is option b. Electricity from burning fossil fuels is used to make solar panels.
What is solar energy power?It is the energy that arise from the sun that should be converted into thermal or electric energy.
It is the cleanest and the most abundant renewable energy source available.
So based on this, the option b is correct.
Learn more about solar energy here: https://brainly.com/question/2083384
When scientists create a representation of a complex process, they are
inferring
c. classifying
b. predicting
d making models.
a.
Please select the best answer from the choices provided
А.
B
D
Answer:
d making models.
Explanation:
When scientists create a representation of a complex process, they are inferring that they are making models.
A model is an abstraction of the real world or a complex process. Models are very useful in developing solutions to processes that are not easily simplified.
The models allow a part of a body to be simply studied. Through this simple abstraction, extrapolations to other parts of the system can be deduced. This can give very useful insights into the other parts of the system. The heterogeneity of complex processes is a huge limitation to understanding them. A homogenous part can be modelled and used to understand the system.Answer:
D. making models.
Explanation:
Question
What is the best thing to do if you are asked to complete a task at work that you
believe could endanger your safety?
A) ask someone else to do it
B) keep working, but talk to your boss when they are available
C)tell your boss and return to the task only when you feel it's safe
D) trust your boss and complete the task
How would you describe the appearance of homogeneous mixture? A. Homogeneous mixtures do not have a uniform composition. B. Homogeneous mixtures have a uniform appearance. C. Homogeneous mixtures are not distributed evenly. D. Homogeneous mixtures have two phases
Answer:
i think its c somebody correct me if im wrong. but hope this help
Explanation:
Identify the chemical reaction Below:
Ca(OH)2 + HCI CaCl2 + H20
Answer:
Neutralizaion reaction!
Explanation:
Calciumhydroxide under Hydrochloric acid gives Calciumchloride with the formation of water.
Under certain conditions, what is a chlorine atom able to do to a sodium atom?
Answer:
it produces a bright yellow light and a great deal of heat energy.
Explanation:
Where does the waste material in the body come from
and why does the body need to get rid of these waste
materials?
Answer:
The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.
Explanation:
____________________________________________________________
The Answer I Put On Mine:____________________________________________________________
The cells inside of your and my body alike produce these waste materials. We need to get rid of them because if we don't, we could get sick! Or possibly cause something worse...
____________________________________________________________
Why?____________________________________________________________
Well, the answer kind-of explains all I would want to say! Feel free to copy and paste this on your assignment, but do NOT use the sample answer like the other person who answered this did. (The sample answer you should NOT use: "The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.") It could make your teachers or parents suspicious of your work! Anyways, have a good day! ❥
From where do nuclear power plants get uranium?
Answer:
Uranium mines operate in many countries, but more than 85% of uranium is produced in six countries: Kazakhstan, Canada, Australia, Namibia, Niger, and Russia. Historically, conventional mines open pit or underground were the main source of uranium.
Explanation:
Hope this helps
Of the three types of plate boundaries, which type is most likely to be associated
with pulling or tension forces?
transform
convergent
divergent
what is the temperature in the fahrenheit?
R-0-R.
What functional group is it
What does this quote mean to you?
"Lighten up on yourself. No one is perfect. Gently accept your humanness."
Answer:
To me it means no need to be so hard on yourself because nobody is perfect. You should love yourself for who you are and try to improve yourself everyday.
Explanation:
):)
Question 6 (1 point)
These stop the electricity from flowing (examples: glass, rubber). (Lesson 5.03)
insulator
conductor
electric current
resistor
Answer:
its an insulator
Explanation:
they block electricity from passing
Which element or compound could be easily shaped into a piece of jewelry?
O Ag
O FeO
O NaCI
O CaF2
Answer:
Ag should be the correct answer
Match the term with its description.
Match Term Definition
Chloroplast A) A green pigment present in all plants that absorbs light to provide energy for photosynthesis
Chlorophyll B) An organelle that contains chlorophyll and in which photosynthesis takes place
Energy C) A capacity to do work that can produce physical changes within living and nonliving systems
Glucose D) A type of sugar that is produced during photosynthesis to store chemical energy
Answer:
Chloroplast: An organelle that contains chlorophyll and in which photosynthesis takes place
Chlorophyll: A green pigment present in all plants that absorbs light to provide energy for photosynthesis
Energy: A capacity to do work that can produce physical changes within living and nonliving systems
Glucose:A type of sugar that is produced during photosynthesis to store chemical energy
hope it helps!
Answer: look at picture for the answer, and I showed that I got it right as well. It was worth 4 points and I got all 4. Brainiest please, if you don't mind <3
Which is the balanced equation for S8 + O2 → SO2?
S8 + O16 → 8SO2
S8 + O2 → S8 + O2
S8 + O2 → S8O2
S8 + 8O2 → 8SO2
Answer: S8 + O2 → S8O2: not 100% sure
Explanation:
A balanced chemical equation happens when the quantity of the particles is required on the reactants side is equivalent to the quantity is the molecules in the items side.
the question is on the screenshot worth 20 points pls help
Answer:
Cell Y Only
Explanation:
An alcohol thermometer makes use of alcohol's changing in order to measure temperature. As the temperature goes up.
the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.
A. state
B. mass
C. density
D. chemical composition
The question is incomplete, the complete question is;
An alcohol thermometer makes use of alcohol's changing _______ in order to measure temperature. As the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.
A.
mass
B.
state
C.
chemical composition
D.
density
Answer:
D.
density
Explanation:
Every kind of thermometer makes use of a change in a particular physical property of a substance as a measure of temperature. It must be a property that changes with temperature.
Density of a substance changes with temperature. Even though the mass of alcohol in glass remains constant, but its volume increases or decreases with change in temperature leading to a change in volume and consequently a change in density of the alcohol in glass. This change is used as a measure of the change in temperature.
Dinitrogen pentoxide is used in the preparation of explosives. If 7.93 mol of
dinitrogen pentoxide undergoes simple decomposition, what volume of Oz(9) is
produced at 48.0 °C and 125 kPa?
The volume of O₂ produced: 84.6 L
Further explanationGiven
7.93 mol of dinitrogen pentoxide
T = 48 + 273 = 321 K
P = 125 kPa = 1,23365 atm
Required
Volume of O₂
Solution
Decomposition reaction of dinitrogen pentoxide
2N₂O₅(g)→4NO₂(g)+O₂ (g)
From the equation, mol ratio N₂O₅ : O₂ = 2 : 1, so mol O₂ :
= 0.5 x mol N₂O₅
= 0.5 x 7.93
= 3.965 moles
The volume of O₂ :
[tex]\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{3.965\times 0.082\times 321}{1.23365}\\\\V=84.6~L[/tex]
What kind of fossil is made when a creature is buried under sediment and as that sediment forms into rock the hard materials like bones of the organism are formed into the rock?
Answer:
Mold fossil
Explanation:
It's called a mold fossil because they are formed when sediments bury an organism and then the sediments are changed into rock; then the organism decays thereby leaving a cavity in the shape of the organism
Why are noble gases, like helium and krypton, unlikely to form a bond?
A. They do not have valence electrons and therefore cannot form bonds by sharing or trading
electrons.
B. They always have an equal number of protons and electrons.
C. They have full valence
orbitals and already have low energy.
D. They are nonmetals and gases and therefore their ionization energy is too high to form a bond.
Answer:
The valence electrons are the only parts of an atom that make chemical bonds. Noble gases don't form chemical bonds because they have a full outer shell (8 electrons).
how many atoms are in 0.340 moles of sodium
The number of atoms that are in 0.340 moles of sodium is 2.047×10²³ atoms.
What is Avogadro's number?Avogadro's number is equal to 6.022×10²³ which gives idea about the number of atoms present in one mole of any substance.
i.e. In 1 mole = 6.022×10²³ atoms
Given moles of sodium = 0.34 mol
Number of atoms of sodium in given moles will be calculated as:
No. of Na atoms = 0.34mol × 6.022×10²³ atoms/mol = 2.047×10²³ atoms
Hence required number of atoms are 2.047×10²³ atoms.
To know more about Avogadro's number, visit the below link:
https://brainly.com/question/10614569
#SPJ2
Moraines left by glaciers are different from deposits left by rivers because the rocks left behind are _____.
Explanation:
unorganized and unsorted i think this is the answer
3. What is the best description of an ionic bond?
A. electrostatic force of attraction between positive and negative ions
B. electrostatic force of repulsion between ions of the same charge
C. nuclear force of attraction between protons of different atoms
D. nuclear force of repulsion between protons of different atoms
plz help me with this :)
Answer:
they are randomly moving
Explanation:
Answer:
B
Explanation:
Red shift indicates that stars are moving further away.
What type of plate boundary (divergent, convergent, or transform) is typically
associated with sliding or shear forces?
convergent
transform
divergent
Answer:
transform
Explanation:
The type of plate boundary associated with sliding or shear forces is a transform plate boundary.
Two or more plates slides laterally past one another due to presence of shear forces acting on them.
In this margin, there is often an occurrence of earthquake. For a divergent margin, plates move apart and away from one another. This leads to the creation or formation of new crusts. At a convergent margin, two plates collides, a plate can subduct under another or both can become uplifted. Tectonic margins are known for their various activities.Answer:
convergent
Explanation:
What's the name of ZrBr4
Answer:
fu-ck fick
Explanation:
which one of the following groups are decomposers a. algae b. protist c. fungi d. green plants e. photosynthetic bacteria
Answer:c
Explanation: