Answer: A dilation with rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
Explanation:
A dilation is a non-rigid transformation that creates an image that is the same shape as the original but has a different size.
It uses a scale factor k such that
[tex](x,y)\to(kx,ky)[/tex]
(x,y)= coordinates of original figure
(kx,ky) = corresponding coordinate in the image.
To transform: A (3,-4) onto point A' (1.5,-2).
Using scale factor k= [tex]\dfrac12[/tex], we have
[tex]A(3,-4)\to A'(\dfrac12\times3, \dfrac12\times-4)=A'(1.5,-2)[/tex]
Required rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
what is sodium chloride
Answer:
Sodium chloride, commonly known as salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
Explanation:
I HOPE THIS HELPS YOU OUT WITH YOUR QUESTION! PLZ LET ME KNOW IF IT DID! IT MAKES ME FEEL GOOD THAT SOMEONE APPRECIATES IT! ANYWAY, IF YOU HAVE A FEW MINUTES PLZ GOT TO MY PROFILE AND THANK MY ANSWERS (THE MORE THE MERRIER)
(I got 4 questions for the day.)
Isotopes are elements with the same # of protons but a different # of_____.
A.Electrons
B. Neutrons
C. Atoms
How many Neutrons are in this isotope of oxygen?
A.8
B.18
C.10
D.12
How many neutrons are in this isotope of carbon?
A.6
B.7
C.13
D.19
How many neutrons does the isotope of phosphorus have?
A.15
B.25
C.10
D.5
Answer:
A) Electrons
A) 16-8=8 so it'd be 8
(Relative atomic mass - atomic number = neutrons)
A) 12
Same thing as last one.
31-15=16 ( did you type the wrong options if not then huh?)
Explanation:
A sample of sodium hydroxide of volume 13.9 mL was titrated to the stoichiometric point with 20.6 mL of 0.209 M HCl(aq). What is the initial molarity of NaOH in the solution? Answer in units of M
Answer:
Explanation:
NaOH + HCl = NaCl + H₂O
1 mole 1 mole
moles of hydrogen chloride reacted = .0206 x .209
= 4.3054 x 10⁻³ moles .
moles of sodium hydroxide reacted will be same = 4.3054 x 10⁻³ moles
Let x be the molarity of NaOH
13.9 mL of x molarity will contain
.0139 x moles
.0139 x = 4.3054 x 10⁻³
13.9 x 10⁻³ x = 4.3054 x 10⁻³
x = .3097 M .
= .31 M .
Static electricity is produced when _____.
atoms gain protons
atoms gain or lose electrons
atoms lose neutrons
electrons move through materials
Answer:
Atoms gain or lose electrons
Explanation:
how many electrons does Helium need to have a full outer shell
Answer:
i dont no about this one
Explanation:
what is coulombic attraction as it pertains to an atom?
PLEASE HELP ASAP IT'S TIMEDDDDD
How many moles of tungsten atoms are there in 4.8 x 10²⁵ atoms of tungsten? *
Answer:
The no. of moles of tungsten contains (4.8 x 10²⁵ atoms) = (1.0 mol) (4.8 x 10²⁵ atoms)/ (6.022 x 10²³ atoms) = 79.7 mol.
Explanation:
Mark brainly if you like my answer
which place is a likely location for primary succession
Answer:
Places where primary succession occurs
include newly exposed rock areas, sand dunes, and
lava flows.
The Moon's gravity is ONE SIXTH of the Earth's gravity. If you weigh 60
Newtons on the Earth, what would you weigh on the Moon?
6 Newtons
60 Newtons
10 Newtons
360 Newtons
Need help on thissss
Answer:37
Explanation:
Because mass number is proton number + neutron number
The frequency of the musical note F3 is 1.85 102 hertz. What is its period?
A 5.40 x 10-3seconds
B. 1.05 x 10-3 seconds
C. 3.09 x 10-3 seconds
D. 5.31 x 10-1 seconds
Answer: 0.0054 s
Explanation: There is an inverse relation between the frequency and the period of a wave (a sound wave in this case):
T=1/F
Where f = 1.85 (10)² H z
Hence : T = 1/1.85 (10)² H z T =0.0054s
Nearly all weather occurs in the layer of the atmosphere called the
A. stratosphere B. ionosphere C. mesosphere D. troposphere
Answer:
Troposphere
D.
Explanation:
The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans, live in the troposphere, and nearly all weather occurs in this lowest layer.
which formation is a result of a hotspot
Answer:
Hotspots occur when one of the Earth's plates moves over an unusually hot part of the Earth's mantle. These hot areas are usually relatively stationary and result in large amounts of magma rising up, piercing a hole in the plate to form a volcano. As the plates move, a series of volcanoes can form.
2
3 4 5 6 7 8
9
The earth is the
planet from the Sun, which is just the right distance for life to utilize the Sun's power and energy
O first
O second
O third
O fourth
Answer:
third
Explanation:
because it's the right distance for life to utilise the sun's power energy
Select the answer choice that is arranged from smallest to largest.
Answer:
Im like 75% sure that the answer is C.
Explanation:
Hope this helps! Have a great day. Remember your amazing and you got this! Alycia <3
15.
CzH60
+
O2
Chemical equation:
Type of reaction:
I
Answer:
C2H6O + 3 O2 = 2 CO2 + 3 H2O
Type of reaction: combustion
in what kind of reaction do two or more substances combine
Answer:
The answer is synthesis reaction
Explanation:
Also known as a composition reaction, a synthesis reaction is a reaction in which two or more substances combine to form a new compound.
I copied and pasted the explanation part. But I hope the information is still helpful :)
nine families in orgo land 1)Halides:
(2) Alcohols:
(3) Ethers:
(4) Aldehydes:
(5) Ketones:
(6) Organic Acids: (aka - carboxylic acid)
(7) Ester:
Amines:
(9) Amides:
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
The Sun is made up of approximately 75% hydrogen and 25%
Answer:
The Sun, like others stars, is a ball of gas. In terms of the number of atoms, it is made of 91.0% hydrogen and 8.9% helium. By mass, the Sun is about 70.6% hydrogen and 27.4% helium.
Explanation:
helium is probs ur answer!
Los alcoholes de cadenas largas presentan ________ puntos de ebullición. Asimismo, éstos al tener ________, el punto de ebullición disminuye
Answer:
Los alcoholes de cadena larga tienen altos puntos de ebullición. Además, cuando tienen ramificación, el punto de ebullición disminuye
Explanation:
El punto de ebullición de un alcohol se ve afectado, las interacciones dipolo-dipolo, las fuerzas de dispersión de van der Waals y los enlaces de hidrógeno.
Las fuerzas de las interacciones dipolo-dipolo y los enlaces de hidrógeno son más o menos las mismas en la serie de alcohol en serie, sin embargo, a medida que aumenta la longitud del alcohol, las fuerzas de dispersión de van der Waals aumentan debido al aumento de la atracción dipolo-dipolo.
Sin embargo, a medida que el alcohol se vuelve más ramificado, el área de la superficie aumenta, lo que disminuye las fuerzas de van der Waals, de modo que se requiere menos fuerza para separar las moléculas y hervir una muestra del alcohol.
Por tanto, los alcoholes de cadena larga tienen puntos de ebullición elevados. Además, cuando tienen ramificación, el punto de ebullición disminuye.
Please help me with 6 7 8 and don’t send me a link tell me here please
Answer:
6 b physical properties
7b melting point
8 boiling
in order to produce 3 moles of o2 how many moles of NaClO3 are required
Answer:
2 moles NaClO3
Explanation:
2NaClO3 --> 2NaCl + 3O2
moles NaClO3 = 3 moles O2 x (2 moles NaClO3/3 moles O2) = 2 moles
conversion factor: 2 moles NaClO3 = 3 moles O2
In order to produce 3 moles of [tex]O_{2}[/tex], the chemical reaction needs to be balanced. the required number of moles of [tex]NaClO_{3}[/tex] are 2.
What is a balanced chemical reaction?When the reactants undergo a chemical reaction, the number of moles on both the reactant and the product side must be balanced.
The chemical reaction of [tex]NaClO_{3}[/tex] is
2 [tex]NaClO_{3}[/tex]⇄2NaCl + 3 [tex]O_{2}[/tex]
On the left side, 2 moles of [tex]NaClO_{3}[/tex] breaks into 2 moles of NaCL and 3 moles of [tex]O_{2}[/tex]. on the right side. Therefore, both side have an equal number of moles of each element.
Hence, two moles of [tex]NaClO_{3}[/tex] is required to produce 3 moles of [tex]O_{2}[/tex].
Learn more about a balanced chemical reaction.
https://brainly.com/question/22817140
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How long does it take a ray of light to travel from the Sun to Earth?
A. 2 hours
B. 8 minutes
C. 2 years
D. 30 minutes
Answer:
it should take about 8 minutes and 20 seconds
so, b
CaCO3(s)⇄CaO(s)+CO2(g) When heated strongly, solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas, as represented by the equation above. A 2.0mol sample of CaCO3(s) is placed in a rigid 100.L reaction vessel from which all the air has been evacuated. The vessel is heated to 898°C at which time the pressure of CO2(g) in the vessel is constant at 1.00atm , while some CaCO3(s) remains in the vessel. (a) Calculate the number of moles of CO2(g) present in the vessel at equilibrium. (b) Write the expression for Kp, the equilibrium constant for the reaction, and determine its value at 898C.
A) The number of moles of CO₂(g) present in the vessel at equilibrium is; 1.04 moles
B) The expression for Kp, the equilibrium constant for the reaction, and its value at 898°C is; Kp = (P[CO₂] * P[CaO])/(P[CaCO₃]) and Kp = 0.0104 mol/L
How to Calculate Equilibrium Constant
We are given the reaction equation as;
CaCO₃ (s) ⇄ CaO (s) + CO₂(g)
We are given;
Number of moles of CaCO₃ used = 2 mols
Volume of vessel; V = 100 L
Temperature; T = 898°C = 1171 K
Pressure of CO₂ in the vessel; P = 1 atm
A) Formula for number of moles of CO₂ in the vessel at equilibrium is;
n = PV/RT
where;
P is Pressure
V is Volume
R is gas constant = 0.08206 L·atm/mol·k
n = (1 * 100)/(0.08206 * 1171)
n = 1.04 moles of CO₂
B) Formula to find the equilibrium constant kp is;
Kp = (P[CO₂] * P[CaO])/(P[CaCO₃])
Where;
P[CO₂] is the partial pressure of CO₂
P[CaO] is the partial pressure of CaO
P[CaCO₃] is the partial pressure of CaCO₃
Since concentration of solids is taken as 1, then it means that;
Kp = P[CO₂]
Kp = 1.04/100
Kp = 0.0104 mol/L
Read more about Equilibrium Constant at; https://brainly.com/question/16320013
Calvin goes for a walk outside and begins to sweat. His sweat will not evaporate. What is the most likely cause of this?
D. A wind speed of 40 mph
E. An air temperature of 7 °C or 45 °F
F. A strong northerly wind
G. A relative humidity of 95%
Answer:D
Explanation:it makes sense alot
Answer: D) A relative humidity of 95%
Explanation:
which kingdom does spiny lobster, and diatom belong to?
Answer:
Animalia
Explanation:
A picture of a patient’s lung showed it to be shriveled and darker than usual.
Which is most likely the cause of this lung condition?
A. smoking
B. overeating
C. sickle cell anemia
D. poor refrigeration
Answer:
Smoking
Explanation:
It has been proven time and time again to ruin lungs, effectively shortenning ones lifespan.
Explanation:
Smoking, because smoking causes these types of symptoms in long time smokers and people who start to smoke. also I know the answer cause my dad's a nurse.
Which compound is insoluble in water?
A) calcium bromide
B) potassium bromide
C) silver bromide
D) sodium bromide
Answer:
C) silver bromide
Explanation:
Calcium bromide is incorrect.
The compound which is insoluble in water is silver bromide (AgBr).
Which compounds are insoluble in water?Those compounds which have high attraction force between their constitutes ions as compare to ions between the water and compounds are insoluble in water.
Among given compounds all are soluble in water except silver bromide, because silver is having high nuclear charge than other given alkali metals as calcium, potassium and sodium. So it tightly attracts the bromide ion towards itself and this attraction is more than the attraction between the H⁺ ion of water and bromide ion, as a result of which it is insoluble in water.
Hence, option (C) is correct i.e. silver bromide.
To know more about insoluble compounds, visit the below link:
https://brainly.com/question/14633704