if people like the smell of burning wood, then they would not like the smell of gasoline
Explanation:
it's a supposition without any real truth to back it up
The valid hypothesis is If Earthquakes occur, then tornados could occur at the same time. The correct option is A.
What is a hypothesis?A hypothesis is an explanation proposed for a phenomenon. The scientific method needed that a hypothesis should be testable in order for it to be considered a scientific hypothesis.
Scientists typically base scientific hypotheses on previous observations that cannot be adequately explained by existing scientific theories.
In an experiment, a hypothesis is utilized to illustrate the relationship between two variables.
A hypothesis's goal is to find an answer to a question. A formalized hypothesis will force us to consider what outcomes we should expect from an experiment. The independent variable is the first variable.
The valid hypothesis is that if earthquakes occur, tornadoes may follow.
Thus, the correct option is A.
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Ryan finds a rock that has large crystals inside. What can Ryan most likely determine about the rock he found?
The rock was heated very slowly
The rock was weathered very quickly.
The rock was cooled very slowly
The rock was deposited very quickly
Which body part MOST LIKELY formed this fossil?
blood
B
bones
fur
D
skin
Answer:
Bones are the correct answer.
3. Write the following numbers in scientific notation:
a. 6,200,000
b. 0.000367
Answer:
A) 6.2*10^6
B) 3.7*10^-4
Explanation:
Which of the following is supported by reliable evidence?
A. Intelligent Design
B. Theory of Gravity
C. Detoxing
D. Homeopathy
A lamp has been on for several hours, and its lampshade begins to feel warm. What causes this to happen
Which element is more electronegative than nitrogen (N)?
The Periodic Table
A. Phosphorus (P)
B. Fluorine (F)
C. Lithium (Li)
O D. Helium (He)
SUBM
Amelia is running a marathon. How do her muscular and skeletal systems work together to allow her to run?
A: The muscles in her leg relax and contract to move the bones. now go get a 100!
Answer:
A. the muscles in her leg relax and contract to move the bones (is the answer)
Explanation:
points
The waves that have shorter wavelengths than visible light are: (select all that are true)
ultraviolet Waves
Infrared waves
gamma rays
radio waves
microwaves
Answer:
Ultraviolet Waves
Explanation:
Because these waves have higher frequencies then
visible lights so they carry more energy
What is the mass percentage of O in C₂H₆O₂? Provide an answer to two decimal places.
Answer:
51.61% of O in C₂H₆O₂
Explanation:
First find the total mass: C = 12 , H = 1 , O = 16
total mass of C₂H₆O₂ = 12 * 2 + 1 * 6 + 16 * 2 = 62
so total mass of oxygen, O₂ in this is: 16 * 2 = 32
now find O₂ percentage in C₂H₆O₂⇒ ( 32 / 62 ) * 100
⇒ 51.61%
pkw definition in chemistry
Answer:
pkw= pH + pOH.
Explanation:
As. [H3O+] equals [OH-] then pH must equal pOH because they are just negative logs of the respective concentration, which are equal.
which type of measurement would you use to determine the mass of sugar?
Answer:
When it comes to how to measure sugar, you need the right measuring tools. All sugar varieties are considered a dry ingredients so use dry measuring cups and measuring spoons.
Explanation: well there are only a few things you can use to measure things that aren't water so this only makes sense.
[tex] \frac{2.568 \times 5.8}{4.186} [/tex]
Round off the answer to the correct number of significant figures:
Find the volume of a cube if the mass is 55.6 grams and the density is 1.23 g/ml.
Answer:
45.20mL
Explanation:
Hello!
To find the volume of a cube given mass and density, we can use the equation [tex]p=\frac{m}{V}[/tex]
p=density
m=mass
V=volume
Let's rearrange the equation so it's equal to volume.
[tex]v=\frac{m}{p}[/tex]
Let's add in the numbers. m is 55.6g and density is 1.23g/ml
v=(55.6g)/(1.23g/mL)
v=45.20mL
Statement:
The mass of cube is 55.6 g and the density is 1.23 g/ml.
To find out:
The volume of the cube.
Solution:
Mass of the cube (m) = 55.6 gDensity (ρ) = 1.24 g/mlWe know,[tex] \sf \: density = \frac{mass}{volume} \\ \sf \: = > volume = \frac{mass}{density} [/tex]
Therefore, the volume of the cube[tex] \sf = \frac{55.6}{1.23} ml \\ \sf= 45.2 \: ml[/tex]
Answer:
The volume of the cube is 45.2 ml.
Hope you could understand.
If you have any query, feel free to ask.
What is Science?
A. None of these.
B. The process of accumulating reliable knowledge.
C. Both of these.
D. A collection of accumulated knowledge.
Answer:
jesus
Explanation:
Jesus is always the answer LOL
10)
How many total atoms (N + H) are in one mole of ammonia (NH3) molecules?
A)
6.0x10^23
B)
1.2x10^24
C)
1.8x10^24
9
D)
2.4x10^24
Answer:
D
Explanation:
Took the test
Answer:
D
Explanation:
Got it right on my test
The strength of an acid depends on
a. the number of double bonds
b. the number of protons released
c. the number of electrons gained
d. all of the above
Answer:
[tex] \huge \sf \boxed d[/tex]
The strength of an acid depends on the concentration of the hydronium ions present in a solution.
Is the sky blue on a sunny Tuesday evening
Answer: Yes
Explanation:
It is all to do with the nature of sunlight and how it interacts with Earth's atmosphere.The sun's light appears to be white but it is made up of all the colours of the rainbow. When the light travels through our atmosphere it is scattered in all directions by all the gases and particles in the air.The blue light is scattered more than other colours because it travels in smaller and shorter waves, this is why the most prominent colour in the sky is blue.
What are sedimentary characteristics ?
Answer:
Five main characteristics of sedimentary rocks are: ... Sedimentary rocks are largely found on the Earth's surface. They cover 75% area of the Earth. These rocks are generally not crystalline in nature. They are soft and have many layers as they are formed due to the deposition of sediments
Explanation:
-bro look it up
Help I’ll give brainiest!!
How do the Himalayan Mountains differ from other mountain ranges?
Answer: Some of the highest mountain ranges in the world are Himalayas, Andes, Rocky, Mountains can be of different types depending upon the process of origin.
Explanation:
Just trust me
I need an answer now please asap and you will me marked brainiest please it's missing I need it now.
All the following reactions are correctly balanced except —
A. 2C2H2 + 5O2 → 4CO2 +2H2O
B. 4Fe + 3O2 → 2Fe2O3
C. NaHCO3 → Na2CO3 + H2O + CO2
D. 2CH3OH + 3O2 → 2CO2 + 4H2O
Answer:
C. NaHCO3 → Na2CO3 + H2O + CO2
Explanation:
» For a balanced equation, the number of atoms of reactants and products must be equal.
» In equation C, the reactant side has one sodium atom while ptoduct side has 2 sodium atoms.
» The balanced equations mus be;
[tex]{ \rm{ 2NaHCO _{3(aq)} → Na _{2}CO _{3(s)}+ H _{2} O _{(l)} + }CO _{2(g)} }[/tex]
Answer:
Option C
Explanation:
Let's balance that
[tex]\\ \tt\hookrightarrow 2NaHCO_3\longrightarrow Na_2CO_3+H_2O+CO_2[/tex]
On reactant side
Na=2H=2O=6C=2On products side
Na=2H=2O=6C=2ii. Fill in the blanks for the drawing of a voltaic cell that’s made with copper/copper (II) nitrate (E° = 0.34 V) and zinc/zinc (II) nitrate (E° = –0.76 V). Briefly explain the role of the salt bridge.
Answer:(i) Voltaic cell
A voltaic cell is a device that uses a chemical reaction to produce electrical energy.
a. Electron flow
b. Voltmeter or lightbulb
c. Electron flow
d. Cathode or Cu
e. Cu²⁺(aq) and NO₃⁻(aq)
f. Salt bridge
g. Zn²⁺(aq)
h. Anode or Zn
Which metal will react most readily with 1.0 m HCL to produce H2(g)
Answer:
(1) Ca (3) Mg(2) K (4) Zn
Explanation:
will react most rapidly
What adaptation does a tufted titmouse have that allows it to stay in a broadleaf forest year-round?
They fluff their feathers for warmth.
They migrate for the winter.
They eat mice for energy to warm themselves.
They hibernate for the winter.
Answer:
They fluff their feathers for warmth.
Explanation:
It was in the explanation on Edge.
Tufted titmouse migrate for the winter that allows it to stay in broadleaf forest year round. Hence, option b is correct.
What is tufted titmouse?The Tufted Titmouse is a little, grey bird with an echoing call that is prevalent in eastern deciduous woodlands and a regular feeder visitor.
These birds have huge black eyes, a short, round beak, and a brushy crest, which give them a peaceful yet urgent appearance that complements the way they dart through trees, dangle from twigs, and land at bird feeders.
Tufted Titmice frequently visit backyard bird feeders, particularly in the winter. Although suet, peanuts, and other seeds are also acceptable, they prefer sunflower seeds.
The tufted titmice live in a variety of environments, such as disturbed areas, semi-open areas, and deciduous and mixed woods. They are a frequent visitor to bird feeders and are prevalent in residential settings with trees. Hence, option b is correct.
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What is .0595 dm = to Km
Answer:
uhm I'm not sure if this is the right answer? sorry D:
5.95e-6
Answer:
0.0595 decimeter(dm)=0.00000595km
Explanation:
C3H8 + _O2 -> _CO2 + _H2O
HELP ME OUT PLEASE
Answer:
the answer is 5,3,4
Explanation:
it balances the eqaution
explain why gas such as oxygen is compressed in tanks.
state the oxidation number of S in
[tex]H_{2}SO_{3}[/tex]
thankyou ~
Taking into account the definition of oxidation number, the oxidation numbers of S in H₂SO₃ is 4.
Definition of oxidation numberThe oxidation number is the charge that an atom has; is an integer that represents the number of electrons an atom puts into play when it forms a given compound.
In other words, the oxidation number of an element is a value that indicates the number of electrons that element gains or loses when it combines with another.
Oxidation number determinationTo determine the oxidation state of different elements it is necessary to know that:
The oxidation number of hydrogen in a compound is +1, except in metal hydrides, where is –1.The oxidation number of oxygen in a compound is –2, except in peroxides, where it is –1.On the other side, the sum of the oxidation numbers of the existing elements in a chemical formula must add up to zero.
Then, considering the oxidation numbers of each element, multiplying it by the number of existing elements in the chemical formula and adding it and equaling it to zero, the value of the missing oxidation number can be obtained.
Oxidation numbers of SIn this case, the oxidation numbers of S in H₂SO₃ is calculated as:
2× (+1) + oxidation numbers of S + 3×(-2)= 0
2 + oxidation numbers of S -6= 0
oxidation numbers of S -4= 0
oxidation numbers of S= 4
Finally, the oxidation numbers of S in H₂SO₃ is 4.
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what is polimation ???????????????????????????????????????????/
Find the molarity: 9.82 grams of lead (IV) nitrate are dissolved to make 465 mL of solution.
The the molarity 9.82 grams of lead (IV) nitrate are dissolved to make 465 mL of solution is 0.063 moles per liter of the solution.
What is molarity?The molarity of a solution is the number of moles of solute present is per liter of a given solution which can be effected by the change of any temperature it is denoted by M is known as molarity of a solution.
Here,
Molarity = number of moles of solute / volume of solution in liiters.
Molarity = mass of solute / molar mass of solute × 1000/ volume in ml
molar mass of lead (IV) nitrate = 331.2
Substituting the value in formula,
Molarity = 9.82 / 331.2 × 1000/ 465 ml
Molarity = 0.063 moles pe liter.
Therefore, the molarity 9.82 grams of lead (IV) nitrate are dissolved to make 465 mL of solution is 0.063 moles per liter of the solution.
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identify two significant redox processes in biochemical systems
We have that the two significant redox processes is given as
oxidation reactionreduction reaction
From the question we are told
identify two significant redox processes in biochemical systems
Biochemical systemsGenerally the the are two name that comes to mind when redox reaction is mentioned
oxidation reaction reduction reactionAnd these makes two significant Redox processes in biochemical systems
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