Answer:
True
Explanation:
Water vapor is totally invisible.
Without it, there would be no clouds or rain or snow, since all of these require water vapor in order to form. All of the water vapor that evaporates from the surface of the Earth eventually returns as precipitation - rain or snow.
Helped by the One & Only #QUEEN aka #DRIPPQUEENMO
Hoped this helped! :)
We can predict that summer will follow spring. T or F
Answer:
T
Explanation:
Metals are considered to be ___________________ because they let electricity flow.
Group of answer choices
conductors
circuits
currents
insulators
Answer:
conductors
Explanation:
Because they consist of lattice of atoms with free electrons and these free electrons allows current to flow through.
True or False: A heterozygous genotype produces the dominant phenotype because the dominant allele masks the recessive allele.
Is it true or false guys??
In your own words, describe the difference between Thermal Energy and Heat.
Answer:
Heat is the flow of thermal energy between two objects of different temperature whereas the thermal energy tells about how much is the transfer of energy due to temperature difference between two bodies. Hence thermal energy in transit gives heat
50 POINTS
Gizmos Moles Activity - chemistry
can someone please help me out
there is how I would answer it.
Plz help if you can!
Name these Ionic Compounds: ( Al is Aluminum and Cl is chlorine)
1. AlI3
2. K3N
3. Cs2O
4. CaCl2
5. LiBr
Answer:
Aluminum Iodide
Potassium Nitride
Caesium Oxide
Lithium Bromide
Explanation:
A piece of metal is composed of atoms. Each atom in the metal contains 29 protons. How is the metal classified?
Answer:
Explanation:
The metal is classified as a transition metal or transition element. In particular, this atom is Copper it has an atomic number of 29 which we know by the number of protons. The number of protons in an atom is the same as the atomic number.
Answer:
Copper
Explanation:
Each atom in the metal contains 29 protons.
8.2 moles of ethanol is boiled, how much energy was required to do so?
AH fus=4.60 kJ/mol
AHvap=43.5 kJ/mol
Answer:
Explanation:
Understand that a substance's specific heat (C) is a property that can be used to ... Calculate the heat required to melt 25.7 g of solid methanol at its melting point. ... How many moles of NH4NO3 must be dissolved in water so that 88.0 kJ of heat ... to vaporize 54.0 g of ethanol (C2H5OH) if AHvap for ethanol = 43.5. kJ/mol?
Two reactant particles collide with proper orientation. The collision will be effective if the particles have
(A) sufficient potential energy
(B) high activation energy
(C) high ionization energy
(D) sufficient kinetic energy
And explain why, and answer in brainly
The collision will be effective if the particles have sufficient kinetic energy (Option D).
Kinetic energy is motion energy, conversely to potential energy.Kinetic energy is required to produce the collision between particles.The more kinetic energy the particles have, then the more collision will occur, thereby it increases the rate of a chemical reaction.In conclusion, the collision will be effective if the particles have sufficient kinetic energy (Option D).
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If the hydroxide ion concentration of a solution is 3.26 x 10-6 M, is it an acidic or a basic solution?
Answer: It is a basic solution with pH =8.51
Explanation:
We were given that hydroxide ion concentration [OH-] as 3.26 x 10-6 M
But We know thar
[OH-] [H+] = 1 × 10^-14
To get the Hydrogen ion [H+] concentration, we have that
[H+] = 1 × 10^-14 M/[OH-]
= 1 × 10^-14 M/3.26 x 10-6 M
= 3.067 x 10^-9 M
But, pH = - log [H+]
Therefore,
pH = - log (3.067 x 10^-9)
pH=8.51
when pH > 7, The solution is basic, therefore a solution with pH =8.51 is basic.
Which property of a substance determines whether the substance is a liquid or a solid at room temperature?
a) melting point
b) flexibility
c) solubility
d) conductivity
Answer:
a) melting point
If the prescribed dosage of milk of magnesia Mg(OH)2 is 3.5 moles, how many grams
would you need to take? Round to the nearest tenth (one digit after the decimal).
A. 92.1 g
B. 204.2g
C. 157.2 g
D. None of the above
Answer:
B
Explanation:
1 mole is equal to 58.31968 grams.
so 3.5 moles equal to answer choice B
Q. Explain why magnesium
oxide has a much higher
melting point than
sodium chloride.
If you answer this correctly ill mark you as brainliest.
Answer:
Why does Magnesium Oxide have a higher melting point than Sodium Chloride? ... As the charge in the ionic lattice in Magnesium Oxide is two times as large, the ionic bonding is stronger so more energy is required to overcome the electrostatic attraction and break down the ionic lattice.
HI thts way tooo much to answer but ye.
Some vitamins and dietary supplements are stored in opaque, darkened
bottles to protect them from UV light because UV light would cause a
reaction. Which word could be used to describe UV light in this situation?
O A. Catalyst
B. Enzyme
C. Solvent
D. Reactant
The correct option for the given question about Harmfull effect of UV light is Option D) Reactant.
Why UV light is so harmfull for some vitamins?In general, temperature, oxygen, and light impacts on vitamins and minerals are sensitive. A nutrient can lose its biological potency if its molecular structure is slightly altered.Numerous vitamins, including vitamin A, vitamin B2 (riboflavin), vitamin B6, vitamin B12, and folic acid, are known to be particularly susceptible to UV radiation oxidation.Additionally, light speeds up the negative interactions between vitamins.For instance, the combination of riboflavin and light together speeds up the breakdown of both folic acid and vitamin C. This is what causes milk that has been exposed to light to lose vitamin C.Thus to conclude we can say that UV light damages some vitamins by reacting with them.
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whoever helps me will get brainlist
Answer:
Show us the arrows, how are we suppose to answer?
Explanation:
Which of the following is not a force
A. Weight
B. Friction
C. Acceleration
D. Air resistance
Answer:
Acceleration
Explanation:
Acceleration doesn't change one moment to the next, and therefore, doesn't count as a force.
The answer option which is not a force is: C. Acceleration.
What is a force?A force can be defined as a push or pull of an object or physical body, which typically results in a change of motion (acceleration), especially due to the interaction of the object with another.
The examples of a force.In Science, the three (3) most common examples of a force include the following:
WeightFrictionAir resistanceIn conclusion, acceleration is not an example of a force but a change in the rate of velocity of an object with respect to time.
Read more on force here: brainly.com/question/1121817
Using the periodic table, determine the number of PROTONS for the element Li
Captain uses a steering wheel called him to turn the rudder A sailing ship do you think it would be easier for him to turn a large wheel or a small wheel explain why you think so
Answer:
Large wheel.
Explanation:
It would be easier for the captain to turn a large wheel as compared to a small wheel because less amount of effort is needed by the captain to turn the rudder. If a steering wheel is small, more effort and force is required to turn it while on the other hand, if the steering wheel is large, small effort is needed to turn the rudder. The large size of a sailing boat's steering wheel can help the captain to have more control over the boat as compared to small steering wheel and he is able to access it from either side of the boat.
Toma en cuenta los textos para responder estas interrogantes: ¿Consideramos que la aplicación de las medidas de seguridad depende de las características de tu entorno?
Answer:
Si.
Explicación:
Sí, la aplicación de medidas de seguridad depende de las características de su entorno porque el entorno nos brinda para elegir las medidas de seguridad. Existen diferentes instrumentos utilizados para la seguridad de diferentes entornos. Algunas medidas de seguridad se aplican en un entorno mientras que el otro se aplica a otro entorno. Por ejemplo, el vallado es una medida de seguridad que se puede aplicar en el terreno pero no en el agua o cualquier zona fangosa, por lo que podemos decir que las características físicas deciden qué medida de seguridad se debe instalar en el entorno.
80 grams of water releases 2550 joules of heat. What is the temperature change of the water? Heat capacity of water is 4.2 J/g°C.
Answer:
7.59°C
Explanation:
Using the formula;
Q = m × c × ∆T
Where;
Q = amount of heat (joules)
m = mass of substance (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
According to this question;
m = 80g
c = 4.2 J/g°C.
Q = 2550J
∆T = ?
Using Q = m × c × ∆T
∆T = Q/mc
∆T = 2550 ÷ (80 × 4.2)
∆T = 2550 ÷ 336
∆T = 7.589°C
The change in temperature of water = 7.59°C.
1) Calcula la masa molecular para las siguientes sustancias
f) Mg3(PO4)2
g) Cu(NO2)3
h) C5H12
i) (NH4)4 As2O7
j) I2O7
2)Halla la composición porcentual de cada una de las siguientes sustancias
- H3PO4
• HIO3
• H2C2O4
• C3H6O3
• NH3
• KBr
Porfavor es para mañana mismo
What is the role of the green substance chlorophyll in photosynthesis? (2 points)
Chlorophyll collects water from the ground.
Chlorophyll captures energy from the sun.
Chlorophyll captures carbon dioxide from the air.
Chlorophyll moves water up the stem to the leaves.
Answer:
captures energy from the sun
Explanation:
Answer:
☁️Chlorophyll captures energy from the sun. ☁️
How many planets did early astronomers know about?
Answer:
5 Plants
Explanation:
Also can i have Brainlist
Select whether the statement is for Speed, Velocity, or Acceleration.
The car speeds up from 5 mph to 10 mph.
Speed
Acceleration
Velocity
Answer:
Explanation:
acceleration no cap
I have 130 L of gas in a piston at a temperature of 250°C. If I cool the gas
until the volume decreases to 85 L, what will the temperature of the gas be?
This is a Charles' Law problem: V1/T1 = V2/T2. As the temperature of a fixed mass of gas decreases at a constant pressure, the volume of the gas should also decrease proportionally. Here, we are given the new volume of the gas after cooling, and we want to determine to what temperature the gas was cooled.
To use Charles' Law, the temperature must be in Kelvin (x °C = x + 273.15 K). We want to solve Charles' Law for T2, which we can obtain by rearranging the equation into T2 = V2T1/V1. Given V1 = 130 L, T1 = 250 °C (523.15 K), and V2 = 85 L:
T2 = (85 L)(523.15 K)/(130 L) = 342 K or 68.9 °C. If sig figs are to be considered, since all the values in the question are given to two sig figs, the answer to two sig figs would be either 340 K or 69 °C.
Gases show great uniformity in their behaviour irrespective of their nature. The concept Charles's law is used here to determine the new temperature of the gas. The new temperature of the gas is 341.96 K.
What is Charles's law?At constant pressure, the volume of a given mass of gas is directly proportional to the temperature on Kelvin scale. The absolute scale of temperature is introduced by the scientist Charles. The temperature at which gases supposed to have zero volume is called the absolute temperature.
Mathematically the Charles's law can be expressed as:
V = constant × T
V / T = constant
For two different gases, the equation is:
V₁ / T₁ = V₂ / T₂
T₂ = V₂T₁ / V₁
85 × 523 / 130 = 341.96 K
Thus the new temperature of the gas is 341.96 K.
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What does the speaker in the poem mean by the phrase "my heart leaps up"?
A.
He is having a heart attack.
B.
He is exercising.
C.
He feels excited and happy.
D.
His heart continues to beat.
Answer:
C. He feels excited and happy
Explanation:
In any engineering design problem, the first step is to understand the problem and identify one or more possible solutions. In this task, you’ll analyze the problems you face as the chemical engineer challenged with setting up the ammonia-making process. Recall the chemical equation for producing ammonia:
N2 + 3H2 ⇌ 2NH3 + energy
2.How can you change the chemical equilibrium to benefit the company? What benefits will be realized?
Answer:
Explanation:
2NH3(g)(→ N2(g)(+(3H2(g)
Eventually, these two reactions occur at the same rate. When this happens,
the concentrations of nitrogen, hydrogen, and ammonia become constant, and the
system is said to be “at equilibrium”. Typically,
we represent chemical equilibrium
using a double-headed reaction arrow:
If you have a cup of water at 35 degrees Celsius, and a bath tub of water at 35 degrees Celsius which will melt the most ice and why?
Calculate the volume which 1.00 mole of a gas occupies at 1 atm and 298K?
Answer:
25.45 Liters
Explanation:
Using Ideal Gas Law PV = nRT => V = nRT/P
V = (1mole)(0.08206Latm/molK)(298K)/(1atm) = 25.45 Liters
What is the pH of a solution that has [H+] of .0042M?
Answer:
pH = 2.4
Explanation:
pH is defined as the negative log of the hydronium concentration.
Thus, we can plug in the given hydronium concentration:
pH = -log[H⁺] = -log[0.0042] = 2.4 (two significant figures)
The pH of the solution is 2.4.
P.S: Although I referred to [H⁺] as hydronium concentration, it is more accurate to express it as [H₃O⁺], though they are interchangeable and means the same thing.
