Answer:
B
Explanation:
i just take the test
An ionic bond has a high melting point because a lot of energy is required to overcome the attractive forces that hold the ionic crystal together. The correct option is B.
In an ionic bond, atoms transfer electrons to form positively charged cations and negatively charged anions. These oppositely charged ions are attracted to each other, creating strong electrostatic forces between them.
When a solid ionic compound is heated, the thermal energy increases, causing the ions to vibrate more vigorously. As the temperature continues to rise, the ions gain enough energy to break free from their fixed positions within the crystal lattice. This requires a lot of energy because the attractive forces between the ions are strong and must be overcome.
Thus, the correct option is B.
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1. What is the mass of 200 mL of ethanol if the density of ethanol is 0.789g/mL?
Answer:
The answer is 157.8 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question we have
mass = 0.789 × 200
We have the final answer as
157.8 gHope this helps you
Cocoa powder dissolves in milk. Cocoa is the ___ and milk is the ___
solute, solvent
What happens to a wave’s energy when it is absorbed by the road?
True or False: Mechanical weathering is the breakdown or rock by changing its chemical composition.
Answer: False
Explanation:
That’s not using mechanics
Answer:
False
Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface.
Hope this helps☺️
You are part of a scientific team designing a space probe that will land on Saturn's moon Titan. Your task is to write a report detailing the conditions the probe will need to withstand and propose some materials to be used in the construction of the probe.
Answer:
Material required to construct the Probe is :
Palladium based alloy, nickel based alloys, rhenium tungsten, wires, piping, duct, roofing membrane, aluminium or titanium body and circuit.
Explanation:
Probe is a robotic aircraft used to explore the galaxy. It does not revolve in the orbit. It goes beyond the orbit and explores the different planets. These probes are used by scientists to collect information regarding the space without sending an astronaut. Probes are sent into the space, they collect information and transmits data to the scientists on earth.
Identify the change that will not increase the volume of a gas. Assume that all other variables are constant.
O increase the number of particles
O decrease the pressure
o increase the temperature
decrease the temperature
Answer:
increase the number
Explanation:
please help me answer this question
Answer:
Pretty sure it is C
Explanation:
Due to the fact that It is talking about biotic survival
Answer:
I think part C
Because u are talking about the survivability
which non metal is the most reactive?
lithium
cesium
chlorine
iodine
Answer:
iodine
Explanation:
What will happen when a reactant is added to a system at equilibrium?
Answer:
the equilibrium of the system will be upset.
Explanation:
a p e x
How many shrimp do you have to eat before you make your skin turn pink?
Answer:
That's kind of a weird question. A lot though.
Explanation:
lot
goofy ahhAnswer:
a
Explanation:
Imagine that you heat a pot of water to a boil (212°F), then you turn off the stove and let the water sit there. The room is at room temperature (72°F) What temperature do you predict the water cool to after sitting for 8 hours? (
Answer:
72 °F
Explanation:
Hello,
In this case, since matter tend the be stable at conditions they do not change, if we have water at room temperature (72 °F) and we heat it until boiling but then we turn off the stove, we molecularly see that due to the heat, the molecules start moving faster and crashing to each other; however when that fed energy starts being removed as the stove gets turned off, the molecules lose energy causing them to start moving slower so they lose energy until a point the remain at the initial status, that is 72 °F because thermal equilibrium is reached. Therefore it is likely for the water to be at 72 °F as well once 8 hours have passed, because a thermal equilibrium is reached with the environmetnal temperature.
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Will award 40 points! Is my answer correct??
When heat is produced by a reaction, would you call it a chemical change?
Answer:
However, in this case, one compound is mixed in with another, and these reactants produce a product. When the reactants are mixed, the temperature change caused by the reaction is an indicator of a chemical change. This reaction generates heat as a product and is (very) exothermic.
Explanation:
Answer:
Thermal change
Explanation:
When an unknown amount of methane reacts with 40.7 g of chlorine, 40.5 g of methyl chloride and 36.5 g of hydrogen chloride form how much methane was used round to the tenth
Answer:
36.3 gram
Explanation:
CH₄ + Cl₂ = CH₃Cl + HCl
In any reaction , mass is conserved
mass of product = 40.5 + 36.5 = 77 g
Let methane reacted be x .
mass of reactant = x + 40.7
mass of reactant = mass of product
x + 40.7 = 77
x = 36.3 gram
methane reacted = 36.3 gram.
Hi i need help please. I have to list the following forms of lights from lowest energy to highest energy:
red lights, violet lights, gamma rays, microwaves, infrared light, and radio waves. Thank you so much!
Answer:
radio waves, microwaves, infrared light, red lights, violet light, gamma rays
46. Which set of numbers balances this equation?. Agl + Na2S →
Ag2S + Nal
O 3,7,20
0 2,1,1,2
O 0,5,0,2
O 2,0,0,2
What do you call a combination of potential and kinetic energy?
Why are atomic masses not whole numbers?
what is 23.54 kg x 9.8 m/s2
Answer:
230.692
Explanation:
23.54kg*9.8m/s²= 230.692
Answer:
F = 230.69 N
Explanation:
Given data:
Mass = 23.54 Kg
Acceleration = 9.8 m/s²
Force = ?
Solution:
Mass ×Acceleration is equal to force.
F = 23.54 Kg × 9.8 m/s²
F = 230.69 Kg.m/s²
Kg.m/s² = N
F = 230.69 N
Ahhhh Help Please! ASAP! Thanks
Answer: Argon-52
Explanation: Its B
Which statement about organisms in the fossil record is correct? A.Organisms show a decrease in diversity only right before an extinction event. B.Organisms show a steady increase in diversity, interrupted by extinction events. C.Organisms show a steady decrease in diversity, interrupted by extinction events. D.Organisms show an increase in diversity only right after an extinction event.
Answer:
Organisms show a decrease in diversity only right before an extinction event.
Explanation:
Extinction is the termination of a kind of organism or of a group of kinds. This brings to an end the existence of a particular specie of organisms.
Extinctions occur only after there is a decrease in the diversity of a specie due to specific conditions such as predators, loss of habitat etc that makes the members of that specie to become endangered.
A tide with the largest difference between water levels at high and low tides is known as a spring tide. Two spring tides occur in each lunar cycle. This is because a spring tide occurs when the Moon
A
is closest to Earth.
B
and the Sun pull on Earth at a 90° angles.
C
and the Sun are aligned and pull on Earth.
D
is farthest from Earth.
Answer:
C is the answer
Explanation:
Tidal cycles are affected by lunar day, semidiurnal and diurnal, lunar nodes, axial tilt ... Their tidal forces act to reinforce each other, and the ocean both rises higher and ... Tidal ranges - differences between neap tides and spring tides - graph ... The perigee of the moon can occur at any point in the orbit around the earth due ...
The correct option is option C among all the given options. This is because a spring tide occurs when the Moon and the Sun are aligned and pull on Earth.
What is tide?Any periodic deformation of one astronomical entity brought on by the gravitational pull of another is referred to as a tide. The most well-known are the regular fluctuations in Earth's sea level that are caused by shifts in the Sun's and Moon's relative locations. You can think of the tides as driven waves, flowing waves, and standing waves.
A tide with the largest difference between water levels at high and low tides is known as a spring tide. Two spring tides occur in each lunar cycle. This is because a spring tide occurs when the Moon and the Sun are aligned and pull on Earth. The Moon's ability to produce tides results from changes inside its gravitational field across Earth's surface in comparison to its strength at the planet's center.
Therefore, the correct option is option C among all the given options.
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When counting the electron groups around the central atom to determine its shape, select the 4 ways that electron groups would be counted
What type of energy results from the position of an object?
1.kinetic
or
2.potential
Answer:
kinetic energy
Explanation:
What is the amount of heat, in joules, required to increase the temperature of a 49.5-gram sample of water from 22°C to 66°C?
All waves carry? Which one on the picture
Answer:
matter
Explanation:
Answer:
All waves carry energy
Brainliest!
Ionic or Covalent bond??? Cu, and F
Answer:
Ionic
Explanation:
Main distinction between ionic and covalent bonding
What is the main distinction between ionic and covalent bonding? Electrons aren't equally shared in an ionic bond. The electronegativity difference is closer to zero in a covalent bond. ... If the difference is large, the bond is ionic.
can someone walk me through how to solve this?
Which option is an example of a physical property?
A flammability
B solubility
C reactivity
D toxicity
Select the correct answer from each drop-down menu. When a car is parked in hot sunlight, the temperature of the car’s seats ____ and the thermal energy of the seats _____
Answer:
When a car is parked in hot sunlight, the temperature of the car’s seats
increases and the thermal energy of the seats increases .
Explanation:
