Answers
Answer:
It has direction and size.
Explanation:
The way I learned it was that vectors have direction and Magnitude. Magnitude is just the length of the vector. So you are right.
Related Questions
Shauna is looking over her family history for heart disease and thought about the easiest way to represent what she discovered. What model is used to show the pattern of traits that are passed from one generation to the next in a family?
dichotomous key
pedigree chart
line graph
punnett square
Answers
Convert 75k to oC
(I’ll mark you as brainlister)
Answers
Answer:
-198.15 degrees Celsius
Explanation:
To convert to Celsius from Kelvin, subtract 273.15 from your temperature in Kelvin.
75K - 273.14 = 198 degrees C
Organisms that get energy by eating dead organisms are called *
scavengers
omnivores
herbivores
decomposers
Answers
Answer:
The Answer is A. Scavengers
2Ag (s) + H2S(s) → Ag2S(s) + H2(g)
Oxidation Half-Reaction:
Reduction Half-Reaction:
Answers
Answer: Oxidation half: [tex]2Ag\rightarrow 2Ag^++2e^-[/tex]
Reduction half: [tex]2H^++2e^-\rightarrow H_2[/tex]
Explanation:
Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.
[tex]2Ag(s)+H_2S(s)\rightarrow Ag_2S(s)+H_2(g)[/tex]
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.
Oxidation half: [tex]2Ag\rightarrow 2Ag^++2e^-[/tex]
Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
Reduction half: [tex]2H^++2e^-\rightarrow H_2[/tex]
Which sentence in paragraph 1 explains what Americans are doing to help the environment?
O a. Today, 60 percent of us believe that climate change is a serious threat.
O b.In 1980, coal, oil and gas made up 89 percent of the energy we used.
0
c. 90 percent of us have recycled in the last year.
O d. Sometimes you can even find low belief in climate change.
Answers
How many grams of water should be added to 4.00 g NaOH to create 2.00% by mass NaOH solution?
Answers
Answer:
196 grams
because ^^^ was wrong and person in comments said it was 196 and it was right
When NaOH of 4.00 g is being added with water, the mass of water required to create 2.00% of NaOH solution by mass is 196 g.
What is mass percent of solute?It means that the particular amount of solute in terms of percentage is present in the solute.
Given the mass of the solute, NaOH is 4.00g
Suppose the mass of water required to add is x in g.
The mass percent of the solute is
[tex]\dfrac{2}{100} =\dfrac{4.00}{4.00 +x }[/tex]
x =196 g
Therefore, mass of water required to create 2.00% of NaOH solution by mass is 196 g.
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how many moles of NaOH are produced from 1.20 moles of Na2O?
Answers
N
a
2
O
and we are trying to find the mass of
N
a
O
H
that can be produced, this is a gams to grams
g
r
a
m
s
→
m
o
l
s
→
m
o
l
s
→
g
r
a
m
s
120
.
g
N
a
2
O
x
1
m
o
l
N
a
2
O
62
.
g
N
a
2
O
x
2
m
o
l
N
a
O
H
1
m
o
l
N
a
2
O
x
40
.
g
N
a
O
H
1
m
o
l
N
a
O
H
=
the gfm of
N
a
2
O
is (2 x 23 + 1 x 16 = 62)
the gfm of
N
a
O
H
is (1 x 23 + 1 x 16 + 1 x 1 = 40)
The mole ratio from the balanced chemical equation is 2 moles of
N
a
O
H
for every mole mole of
N
a
2
O
.
According to the stoichiometry of the mentioned chemical reaction,2.40 moles of NaOH are produced from 1.20 moles of Na₂O.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is used in balancing chemical equations for the law of conservation of mass to be implemented.
According to the reaction, as 1 mole of sodium oxide produces 2 moles of NaOH , therefore 1.20 moles of sodium oxide will produce 1.20×2/1=2.40 moles of sodium hydroxide.
Thus, 2.40 moles of NaOH are produced from 1.20 moles of Na₂O.
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This equation is balanced.
C + S8 -4CS2
True
False
Answers
False.....................
2. This chart describes several characteristics of human civilizations.
(6.04)
Characteristics of Human Civilizations
Stable Food Supply
?
Developed Systems of Writing
Which phrase best completes this list?
A. Created militaries
B. Complex social structures
C. Use of fire for protection
D. Declining population
Answers
Which states of matter change shape when moved? Which states of matter change shape when moved?
Answers
Answer:
Gas and Liquids
Explanation:
3Ba(C2H3O2)2 + 2K3PO4 ⟶ Ba3(PO4)2 + 6KC2H3O2
If 4.36 mol of potassium phosphate react, how many grams of barium phosphate are produced?
Answers
Hello Mistyann!
First you need to know amount of barium phosphate is
Half of potassium phosphate, also 2.18 mol.
Molar mass of Barium phosphate is 3·137.2 + 2·(30.97+4·16) g/mol
You can calculate it yourself dear.
Now mass is amount of substance · molar mass.
It has been an honour to teach you, dear,
God bless!
Which of the following are parts of the Nervous System?
Choose all the apply
Nerves
Brain
Heart
Skin
Spinal Cord
Lungs
Answers
Answer: Nerves, Brain and spinal cord
Explanation:the other choices are either part of the cardiovascular system or the respiratory system
1 point
1. A balloon has 1.55 L of air in it exerting a pressure of 105.2 kPa. At
constant temperature, if the pressure increases to 122.0 kPa, what is the
volume?
Answers
Answer:
[tex]V_2=1.34L[/tex]
Explanation:
Hello there!
In this case, since this problem is describing how pressure changes as a function of volume and vice versa, it is possible recall the Boyle's law as shown below:
[tex]P_1V_1=P_2V_2[/tex]
Whereas we are asked to compute the volume when the change is pressure is performed (V₂); thus, we proceed as follows:
[tex]V_2=\frac{P_1V_1}{P_2}\\\\V_2=\frac{1.55L*105.2kPa}{122.0kPa}\\\\V_2=1.34L[/tex]
Best regards!
Why is there a hole in the ozone layer? What do you think the consequences of that hole are?
Answers
Answer:
There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.
Answer:
There is a hole in the ozone layer because of the pollution on earth. Because of that the UV rays are easily entering the earth through that portion. The consequences of this can be cancers, global warming and disastrous storms.
plz mark as brainliest
Worth many points (timed test)
A 54.2 g sample of an unknown metal is heated to 48.00 degrees Celsius.
It is then placed in a coffee-cup calorimeter filled with water.
The calorimeter and the water have a combined mass of 183.1 g and an overall specific heat of 1.34 cal/g•°C.
The initial temperature is 10.2°C when the metal is added.
The system reaches a final temperature of 23.00 °C.
(show work)
Answers
Answer:
2.335 J/g*degrees celcius
Explanation:
help please don’t understand
Answers
hello sister the answer is very easy it is 2 miles of oxygen
15. _____ is the breakdown of rocks into smaller particles by natural processes.
A. Deposition
B. Weathering
C. Erosion
Answers
Answer:
B
Explanation:
Weathering is the physical and chemical breakdown of rock at the earth's surface. ... The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.
Which of the following would be a value measured using a scale in lab?
O Actual yield
O Percent yield
O Theoretical yield
O Molar ratio
Answers
Answer:
A. Actual Yield
Since all of the others are calculated not measured outright.
Identify at least four limiting factors in the local ecosystem and their impact on native populations.
Answers
4 limiting factors could be water, space, pollution, and access to mates, could all be factors in limiting the native population. Water, could be affected by pollution, and this would remove water, which means that no living things would be able to survive, or at the best be hindered in its growth. Space could be removed by deforestation, or simple water rising, and this could kill off the population, thus removing mates for the population. (hope this helped, if it did, please consider marking brainiest)
The availability of food, water, shelter and diseases are the four limiting factors in the local ecosystem and their impact on native populations.
What are the limiting factors?The limiting factors such as availability of food, water, shelter and diseases can change animal and plant populations because these factors has a direct impact on the organisms and the organisms is depend on these factors for their survival.
So we can conclude that availability of food, water, shelter and diseases are the four limiting factors in the local ecosystem and their impact on native populations.
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Dipole-dipole interactions are (weaker than, stronger than, equal to) hydrogen bonds.
Answers
Answer and Explanation:
Dipole-Dipole interactions are weaker than hydrogen bonds.
Hydrogen bonds are a form of dipole-dipole interactions, being the strongest form of dipole-dipole interactions.
#teamtrees #PAW (Plant And Water)
Based on the chemical reaction below, if you produce 109.34 moles of Na, how
many g of Cl2 were produced? 2NaCl (s) -> 2Na(s) + Cl2(g) *
Answers
Answer: 3881 g of [tex]Cl_2[/tex] will be produced along with 109.34 moles of Na
Explanation:
The balanced chemical equation is:
[tex]2NaCl(s)\rightarrow 2Na(s)+Cl_2(g)[/tex]
According to stoichiometry :
2 moles of [tex]Na[/tex] are produced along with = 1 mole of [tex]Cl_2[/tex]
Thus 109.34 moles of [tex]Na[/tex] will produced along with=[tex]\frac{1}{2}\times 109.34=54.67moles[/tex] of [tex]Cl_2[/tex]
Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=54.67moles\times 71g/mol=3881g[/tex]
Thus 3881 g of [tex]Cl_2[/tex] will be produced along with 109.34 moles of Na
CAN SOMEONE HELP ME WITH AS MANY AS POSSIBLE! I WILL GIVE MORE POINTS IF GIVEN ALOT
Answers
Answer:
1.Hydrogen peroxide,2.Potassium nitrate,3.Ethane,4.Ammonium phosphate,5.Aluminium sulfate,6.Barium hydroxide,7.Calcium phosphate,8.Calcium chloride,9.Copper nitrite,10.Iron oxide,11.Sulfuric acid,12.Phosphoric acid,13.Mercury chloride,14.Potassium sulfite,15.Potassium manganate,16.Magnesium acetate,17.Magnesium nitrate,18.Sodium chloride,19.Sodium acetate,20.Ammonium bromide
Organisms are classified into different kingdoms based on?...
Answers
Answer:
Food and cell type
Explanation:
Kingdoms are by far the most basic legal structure for living objects. Living objects are classified into realms depending on how they consume food, the kinds of cells that produce their bodies, and the total type of tissue in their bodies.
Renewable energy resources include *
O all of the above
O moving water
O biomass
O wind
Answers
How many grams of Li are present in 3.4x1026 atoms of Li?
Answers
Answer:
1.0534×10²⁷ grams
Explanation:
multiplying the number of atoms with Avogadro's constant.
Find the net force on a rope which is being pulled by 2 groups of
students. The blue team is pulling with a force of 1500 N to the west and
the orange team is pulling with a force of 1300 N to the east.
Answers
Answer:
200 N to the west b/c we have 1500 to west and
1300 N to east . the forces have a opposite direction.
thus we add the force. and we gain 200N force.
How many grams are found from 2 moles of glucose C6H1206?
Answers
Answer:
360g
Explanation:
Hope it helps you!
True or False: Ionic bonding means atoms COMPLETELY GIVE AWAY OR TAKE their electrons from each other. *
Answers
Answer: The given statement is True.
Explanation:
An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.
A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.
Thus the given statement is True.
In an ionic bond, which
category of elements are giving away
electrons?
Answers
Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons. It takes energy to remove valence electrons from an atom and form a positive ion
Answer:
Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons. It takes energy to remove valence electrons from an atom and form a positive ion. Energy is released when an atom gains valence electrons and forms a negative ion.
hope it is helpful u in understandingplz mrk it as brainliest.A student draws the model shown below. Which of these best compares the conditions at Location X and Location Y?
Answers
Answer:
Explanation:
You have to use formula b to your answer