Answers
true
Explanation:
Ecothermic reactiions are reactions or processes that release energy. From heat or light.
A.True
Explanation:
Reactants+Products+Energy
Related Questions
Which chemical equation below is balanced to follow the Law of Conservation of Mass?
2 H2 + Cl2 > 3 HCl
2 H2 + 2Cl2 > 2 HCl
H2 + Cl2 > 2HCl
H2 + Cl2 > HCl
Answers
Answer:
H₂ + Cl₂ → 2HCl
Explanation:
The equation that is balanced and follows the law of conservation of mass is:
H₂ + Cl₂ → 2HCl
Based on the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but they combine with one another".
It suggests that the number of species on both sides of the expression must be the same.
For the given reaction:
H₂ + Cl₂ → 2HCl
Reactant side Product side
H 2 2
Cl 2 2
What kind of molecule can experience hydrogen bonding?
A. A nonpolar molecule containing a hydrogen atom
B. A molecule with hydrogen bonded to any nonmetal
C. A molecule with hydrogen bonded to O, N, or F
D. Any polar molecule containing a hydrogen atom
Answers
Answer:
Answer is C
Explanation:
C - A molecule with hydrogen bonded to O, N, or F
A molecule with hydrogen bonded to O, N, or F can experience hydrogen bonding. Therefore, the correct option is option C.
A hydrogen atom is attracted to another electronegative atom in a neighbouring molecule when it is connected to a strongly electronegative atom (O, N, or F). This attraction is more powerful than the usual dipole-dipole interactions between polar molecules.
The enormous electronegativity differential between hydrogen and the highly electronegative atom causes hydrogen bonding. The electronegative atom attracts the shared electrons in the covalent link, causing the hydrogen atom to gain a partial positive charge.
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Describe what happens to kinetic energy of the molecules when temperature increases.
Answers
Answer:
When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
Explanation:
That is all I know.
Anatoms of an element with atomic number 48 and mass number 120
contains
Answers
Cadmium 120 has 48 protons and 72 neutrons which makes its mass number 120
Hope that helps :)
What wave properties do x-rays and gamma rays possess that cause them to have such high energy?
Answers
Answer:
Waves with a very short wavelength, high frequency and high energy
Explanation:
PLEASE HELP ME!!!!
Answers are below the sentence
Answers
Answer:
Mass
Explanation:
What are the names, symbols, and atomic numbers of the nonmetal elements that are NOT gasses?
Answers
one is a liquid (bromine); and a few are solids (carbon, phosphorus, sulfur, selenium, and iodine). Metalloids such as boron, silicon, and germanium are sometimes counted as nonmetals.
ANSWER:
Liquid:
Bromine - Br - 35
Solid:
Carbon - C - 6
Phosphorus - P - 15
Sulfur - S - 16
Selenium - Se - 34
Iodine - I - 53
Electromagnetic waves will travel the SAME SPEED (speed of light) WITHIN a medium as it does WITHOUT a medium. Question options: True False
Answers
Answer:
True
Explanation:
The speed that electromagnetic waves will travel within any medium is the same as those without a medium. The speed of electromagnetic wave is a constant and does not depend on the material of the medium.
Electromagnetic waves are waves that do not require a material medium for their propagation. They are able to pass through vacuums and mediums with particles at constant speed. It is mechanical waves whose speed is medium dependent. Mechanical waves have varying speed based on the mediums they move through.If you want to warm 3.10 g of water from 56.4 C to 82.4 C, how many calories would you need to add to the water?
Answers
Answer: 80.6
Explanation:
q = mcAt
we have the grams of water, temp change, and specific heat of water is 4.186 J/g so we can plug in our numbers to find the heat energy in joules
q = (3.10)(4.184)(82.4-56.4)
q= 337.2304 J
we need our answer to be in calories so divide our answer by 4.184 and we get 80.6 calories
The amount of calorie required to warm 3.10 g of water from 56.4°C to 82.4°C is 80.6 calories.
HOW TO CALCULATE CALORIES:
The amount of calories can be calculated by using the formula as follows:Q = m × c × ∆T
Where:
Q = amount of heat in caloriesc = specific heat capacity (J/g°C)∆T = change in temperature (°C)m = mass (g)According to this question, c = 4.184J/g°C, m = 3.10g, ∆T = 82.4°C - 56.4°C = 26°CQ = 3.10 × 4.184 × 26Q = 337.23JSince 1J = 0.2390057361 calories337.23 J = 80.6calories.Therefore, amount of calorie required to warm 3.10 g of water from 56.4°C to 82.4°C is 80.6 calories.Learn more at: https://brainly.com/question/8097823?referrer=searchResults
The element with the smallest iconic radius in the alkaline earth metals is
Answers
Answer:
Metal.
Explanation:
Metal has the smallest iconic radius in the alkaline earth metal.
(04.01 LC)
Fill in the blank with the correct number to balance the equation: __KCIO3 - 2KCI +
302. (Enter only a whole number.) (3 points)
Answers
2, 2, 3 (coefficients)
CAN SOMEONE PLEASE HELP ME WITH THIS PLZ
Answers
Answer:
the pressure increases
A laser used in eye surgery to fuse detached retinas produces radiation with a wavelength of 6.4 x 10^-7 m. What is the frequency of the laser?
Speed of light = 3.00 x 10^8 m/s
(Hint: Remember to round your answer to the lowest number of significant figures.)
(Speed of light) / (Wavelength) = Frequency
show steps please.
Answers
Answer:
ν ≈ 4.7 × 10¹⁴ Hz
General Formulas and Concepts:
Chem
Speed of Light = Wavelength times Frequency
c = λν c = 3.0 × 10⁸ m/sExplanation:
Step 1: Define
λ = 6.4 × 10⁻⁷ m
Step 2: Solve for ν
3.0 × 10⁸ = 6.4 × 10⁻⁷ · ν
ν = 4.6875 × 10¹⁴ Hz
Step 3: Check
We are given 2 sig figs. Follow sig fig rules.
4.6875 × 10¹⁴ Hz ≈ 4.7 × 10¹⁴ Hz
Volume of water displaced
Answers
Answer:
The volume of displaced fluid is equivalent to the volume of an object fully immersed in a fluid.
PLEASE HELP!!!!! NEED HELP ASAP!!!!!
Write the chemical formula for the covalent compounds below
EXAMPLE- dinitrogen trioxide= N2O3
nitrogen monoxide =
dihydrogen oxide =
diphosphorus pentoxide =
sulfur trioxide =
Answers
Answer:
down below
Explanation:
NO
H20
P4O10
SO3
1. NO
2. H2O
3. P4O10
4. SO3
What does an oxygen atom do when becoming an ion?
Answers
Why do lunar and solar eclipses not happen every month?
-Eclipses only occur during full and new moons.
-Earth rotates around its axis faster than the moon.
-The moon and Earth only travel through the penumbras.
-The moon’s axis does not always align with Earth’s shadow.
Answers
Answer:
i think its the last one
The moon does rotate around the Earth every month but that doesn’t mean it can get a shadow every time due to the moon’s tilted path around the Earth.
if one species of rabbit, the gene for brown fur ( B) is dominant, while the gene for black fur ( b) is recessive. One rabbit has the dominant allele for brown fur and the recessive allele for black fur. Another rabbit has two recessive alleles. If the two rabbits have offspring, what are the odds of one of the offspring having brown fur?
Answers
Answer:
1/2
Explanation:
According to this question, the gene coding for fur color in rabbits contains two alleles viz: alelle for brown fur ( B) is dominant, while the allele for black fur ( b) is recessive. This means that an heterozygous rabbit (Bb) will have brown fur.
Based on the question, one rabbit has the dominant allele for brown fur and the recessive allele for black fur i.e genotype Bb, another rabbit has two recessive alleles i.e. genotype bb. If these two rabbits cross i.e. Bb × bb, the proportion of the offsprings produces will have Bb, Bb, bb and bb genotype.
Bb is dominant, hence, 1/2 of the offsprings will be brown furred.
one species of rabbit, . the two rabbits have offspring, what are the
whats the mass of neon
Answers
Answer:
20.17 (or if you want to round .18)
Explanation:
If you ever need help with this again the atomic mass is the number underneath the element name
Which statement best describes the particles in a sample of H2O in the solid phase?Immersive Reader
(10 Points)
They move very quickly and rarely interact.
They move very quickly and frequently collide.
They vibrate in place and have very weak bonds.
They vibrate in place and have very strong bonds.
Answers
Answer:
You can describe, the state, the color, the texture, and the odor of matter using your senses. ... As the motion of particles continues to increase, they move even farther apart. ... For example water is normally a liquid at room temperature. When it ... Gases have the most kinetic energy because their particles move very quickly.
Explanation:
Hopefully this helps!
Answer:
They vibrate in place and have very strong bonds.
Explanation:
All solids, in their form, have particles that vibrate in place and strong bonds to keep their form.
Which manufacturing process is shown in the photograph?
A Combining
B. Separating
c. Forming
D. Conditioning
Answers
The manufacturing process shown in the photograph is a process of forming. The correct answer is option C.
Manufacturing processes refer to the series of steps or operations involved in converting raw materials or components into finished products. These processes are designed to transform the materials into the desired shape, form, or functionality.
The photograph shows that, the substance is poured in a mold to create a product of specific geometry. In this case, it is a cube. This process is known as forming processes. It includes techniques like bending, stamping, or forging, which involve shaping materials by applying pressure or manipulating them through dies or molds.
Therefore, the photograph shows the manufacturing process is a process of forming. Option C is the correct answer.
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How can the gravitational potential energy of an object be changed?
Answers
Answer:
Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem).
Explanation:
check wether all the answers are correct or not. please?
Answers
Answer:
I dont now but I think it is correct
How do you identify an element?
Answers
Answer:
element is the smallest particles which cannot be broken down.
i have the most potential energy if i am
Answers
Answer:
travel the world in one day
what is carbogen and it's uses
Answers
8. The following system contains 20.0 psi each of gases A and B in the end bulbs with an evacuated bulb in the centre. Both stopcocks are opened at once. What is the new overall pressure in the system?
I literally have no idea how to even start this, I know that the answer is 13.3 psi, but I don't have any clue why or how to get there.
Answers
Answer:
13.3
Explanation:
Before opening the stopcocks you have 40psi in total.
After that, those 40psi will be divided into 3bulbs, so 40/3=13.3psi for the system.
why do chemical equations have to be equal
Answers
Answer:
Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.
Explanation:
YW :)
395,000 divide by 9000
Answers
Answer:
it is 395/9 =43.8888889
You are at a carnival fun house standing 3m in front of a lens with a focal length of 2.5m. What would happen to your image if the lens was concave? What would the image look like if the lens was convex?