Answer:
3.2
Explanation:
i caculated give me a 1 star if incorrect
Select the correct answer.
Observe the two images. What is the correct conclusion?
copper in hot
sulphuric acid
bunsen burner
copper in
hydrochloric acid
Image 1
Image 2
O A. Copper reacts with any kind of acid.
B. Copper does not react with acids.
Conner rearts with sulfuric acid when heated
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.
1. What is the density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm?
Answer:
0.087 g/cm^3
Explanation:
Density is Mass : Volume.
Volume = 12 x 8 x 9 = 864 cm^3
Mass = 75 g
Density = 75g/864 cm^3 = 0.087 g/cm^3
The density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.
What is density?
Density is defined as the mass per unit volume of the body. Mathematically-
ρ = M/V
Given is a 75 g block of wood measuring 12 cm x 8 cm x 9 cm.
We can write -
Mass = [m] = 75 g = 75/1000 = 0.075 Kg
Volume = [V] = L x B x H = 12 x 8 x 9 = 864 cm³
Therefore, the density of the object will be -
ρ = M/V
ρ = 0.075/864
ρ = 8.6 x 10⁻⁵ Kg/cm³
Therefore, the density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.
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50 POINTS!
What do you expect to happen to the reaction rate when the size of a solid reactant is changed describe increased in size or solid reactant effect on rate/decrease in size of solid react in a second on rate
Answer:
sorun nedir anlamıyorum seni türkçe yaz
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
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
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
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
EXTRA CREDIT. The rate at which an object moves is its speed. If a horse
walked 50m in 68s, cantered 150m in 35s, and galloped 300m in 22s, what
would its average speed be? Show your work! Help ASAP
A scientist is studying a liquid. If she lowers the temperature of the liquid,
which of the following will most likely occur? *PLEASE HELPPPPPPPPP*
The liquid will boil
The liquid will melt
The liquid will freeze
The liquid will evaporate
which kingdom does spiny lobster, and diatom belong to?
Answer:
Animalia
Explanation:
How many Liters of I2 are produced when 241.6 grams of KI are reacted with excess CuBr2?
Answer:
8.15 L I2
Explanation:
So, I have the balanced equation of: 2CuBr2 +4KI → 2CuI + 4KBr + I2
Now, we do:
241.6g / 1 mol KI / 1 mol I2 / 22.4 L
--------------------------------------------------------- = 8.15 L I2
/ 166g KI / 4 mol KI / 1 mol I2
Hope this helps! ^u^
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:
why do you think the pressure changed as it did when the temperature was increased?
Answer:
La Convención Marco de las Naciones Unidas sobre el Cambio Climático (CMNUCC) en su Artículo 1, lo define como ‘un cambio de clima atribuido directa o indirectamente a la actividad humana que altera la composición de la atmósfera mundial y que se suma a la variabilidad natural del clima observada durante períodos de tiempo comparables’. La CMNUCC distingue entre ‘cambio climático’ atribuido a actividades humanas que alteran la composición atmosférica y ‘variabilidad climática’ atribuida a causas naturales.
Los científicos han encontrado evidencias de que el clima en el planeta está cambiando a un ritmo más acelerado de lo esperado y que nuestras actividades ligadas a la producción, extracción, asentamiento y consumo, son la principal causa de este aceleramiento en el cambio.
El mayor problema de un cambio acelerado en el clima es que nuestras sociedades no están preparadas para asumir los cambios que esto nos pueda traer: derretimiento de las masas glaciares y nevados que abastecen acueductos, cambios en los ciclos de floración y fructificación de las plantas de cultivo, ascensos en el nivel de los mares donde hay mucha población viviendo, mayor ocurrencia y fuerza en lluvias, sequías, huracanes, heladas y granizadas en áreas urbanas y rurales, entre otros fenómenos que sin duda reducen nuestra calidad de vida.
Explanation:
espero te áyude
Shown in the table below are solubility data for different salts in water at 60oC.
Which salt is most soluble at 60o C?
A, B, C, or D.
(Chart Below:)
Answer:
D is the most soluble in water at 60 degrees Celsius
According to the data given in the table, the salt is most soluble at 60o C - salt D.
In the given table it is given that all the salts are soluble in different concentrations in different concentrations of the water at the same temperature of 60 degrees celsius.
Salt A - 10/ 50 grams H₂OSalt B - 20/60 grams H₂OSalt C - 30/120 grams H₂OSalt D - 40/120 grams H₂OConverting them in the same amount of H₂O that is 100 grams in the same ratio:
Salt A - 10/ 50 = x/100 gram = 20 gram/ 100 gram H₂OSalt B - 20/60 = x/100 grams = 33.3 gram/ 100 gram H₂OSalt C - 30/120 = x/100 grams = 25 gram/ 100 gram H₂OSalt D - 40/120 = x/100 grams = 50 gram/ 100 gram H₂OThus, the salt D is the most soluble that is 50 grams per 100 gram H₂O.
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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 :)
First person with the right answer gets brainliest thanks (btw the numbers on the right are the answers choose the right one)
Question 10
Which chemical species is an intermediate in the formation of the goal reaction?
Answer:
C. C
Explanation:
Intermediates are species that are neither reactants nor products.
In this reaction;
Reactant = C3H8 and O2
Products = CO2 + H2O
From the options, the only element that is either the reactants nor products is;
C. C
If a concentration had X number of compounds and its concentration was 7 mol/L, if
we wanted "2X" number of compounds what would the concentration be?
3.5 mol/L
2 mol/L
7 mol/L
14 mol/L
Answer:I think the answer would be 2 mol/L
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:
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.
Someone who looks after all of the different area managers in a large corporation such as in HR, Business Information, and Operations is called a:
The person who looks at the different area managers in a large corporation such as in HR, Business Information and Operations is known as a general manager.
What is organizational structure?An organizational structure can be described as the process which involves dividing an organization into several functional units. A functional organizational structure is a kind of structure used to organize staff by categorizing them into several departments based on their roles or functions, skill sets, and knowledge.
These departments are vertically structured and may include IT, sales, finance and marketing, research, customer service, etc. The various departments are headed by functional managers who have the responsibility of managing, overseeing, and reporting to the executive management.
A manager is an individual who has the responsibility of providing guidance, supervision, support, and administrative control, as well as acting as a role model to the employees working in an organization.
Generally, managers are involved in taking up leadership roles and are expected to build strong relationships with their subordinates by providing a fair ground for effective communication and sharing of resources.
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what is coulombic attraction as it pertains to an atom?
Organisms on earth are
th-based Ilfe forms.
hydrogen
oxygen
carbon
Hurryyyy!!
Answer:
carbon...?
Explanation:
Answer:
Carbon
Explanation:
Carbon makes up most of the building blocks of life. Hope that is right. Good luck
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 .
A hot air balloon rises because the fire warms up the air and the air circulates to fill the balloon and lift it at the same time. What type of heat transfer is this?
A.Conduction
B.Convection
C.Radiation
D.Absorption
PS: Please Hurry ! Thank You !
Answer:
B.
Explanation:
Convection is the transfer of heat energy, I'm REALLY sure. Please tell me if its wrong in the comments!
15.
CzH60
+
O2
Chemical equation:
Type of reaction:
I
Answer:
C2H6O + 3 O2 = 2 CO2 + 3 H2O
Type of reaction: combustion
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
PLEASE HELP ASAP IT'S TIMEDDDDD