Answer:
he or she is right
make tissues is the answer
Explanation:
hope this helps :)
what do you need to move a soccer ball?
how many columns are there in the s blocks of the periodic table
What happens after condensation in the water cycle?
Water cools and forms water droplets in the clouds.
Water falls to the ground as rain, sleet, hail, or snow.
Water runs across the Earth's surface.
Water turns into water vapor.
Answer: A
Explanation: The water vapors after condensation are turned into water droplets which are inside the clouds, moving around the world.
How does oxygen obey the octet rule
Answer:
oxygen obey the octet rule when reacting to form compounds by adding 2 electrons.
Explanation:
Answer:
See below.
Explanation:
An oxygen atom, in free state has 8 electrons, 2 in the first shell, and 6 in the second. It can only achieve stability if the valency of the valence shell is 0. In order for this, it combines with another atom with the same valency, such as magnesium or another oxygen atom to obey the octet rule. Hope it helps.
This is a group of protons and neutrons in the center of all atoms.
Answer:
nucleus
Explanation:
If a 78.51 g stone is added to a graduated cylinder, the water level rises from 20 mL to 45 mL. What is the density of the stone?
Answer:
The answer is 3.14 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume}\\[/tex]
From the question
mass = 78.51 g
volume = final volume of water - initial volume of water
volume = 45 - 20 = 25 mL
So we have
[tex]density = \frac{78.51}{25} \\ = 3.1404[/tex]
We have the final answer as
3.14 g/mLHope this helps you
name two neutral solution?
Answer:
Some neutral substances that are the most well known are: water, table salt, sugar solution and cooking oil.
Hope this helps! :D
what are the similarities and differences of the light waves on material
Answer:
1. Sound is longitudinal waves, light waves is transverse
2. Sound is a mechanical wave, light is an electromagnetic wave
3. Speed of sound is less than the speed of light waves. For example, in air, sound travels at approximately 333.1 m/s, while light travels at about 3*10^8 m/s
4. Sound waves can't be plane-polarized while light waves can be polarized.
Explanation:
When a material made of iron rusts, its mass increases so does this observations violate the law of conservation of mass?
Which object will have particles with the highest average kinetic energy?(1 point)
1. an iceberg at 0°C
2. water at 37°C in a glass
3. a drop of water at 90°C
4. water at 40°C in a swimming pool
Answer:
The answer will "a drop of water at 90°C"
Explanation:
Kinetic energy is a measurement of how fast or slow particles move. And temperature = Kinetic energy.
What does this mean?
Well, this means that the higher the temperature, the higher the kinetic energy. The mass of the water doesn't affect the kinetic energy, since the kinetic energy is the measurement of only the movement of the particles. So, we can ignore the masses. Therefore, that means the answer will be the drop of water, as it has the highest temperature.
Average kinetic energy is the average sum of all kinetic energy of all the molecules of gases. A drop of water at 90°C has the greatest average kinetic energy. Therefore option 3 is the correct option.
What is kinetic energy?
It is a energy which is possess by a moving object. It is very difficult to find the correct value of kinetic energy so we find average kinetic energy. Which is very easy to calculate as compared to calculating kinetic energy . Average kinetic energy is directly proportional to temperature. It is not dependent on the type of gases or mass of gases
Mathematically,
K.E=2/3KT
Where,
K= Boltzmann constant
T is the temperature
Water at higher temperature will have higher average kinetic energy. Among given options, a drop of water at 90°C is at higher temperature. Thus a drop of water at 90°C has the highest average kinetic energy among all. Therefore option 3 is the correct option.
Learn more about the average kinetic energy, here:
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Which of the following factors is NOT significant in determining the effectiveness of a microbial treatment?
The susceptibility of the microbe to the treatment.
The concentration of the treatment.
The toxins secreted by the microbe being treated.
The length of exposure to the treatment
PLEASE HELP MEEEEE. Calculate how many grams of hydrogen are needed to synthesize 56g of nitrogen in ammonia.
Answer:
We need 168g of hydrogen in making the ammonia
Explanation:
Using the comparison of coefficient as mol and divide it to the known molecules and multiply it by the grams of known molecule.
Is a new substance created when Ammonia is added to copper chloride?
Answer :Ammonia is added to a solution containing copper chloride, producing the deep blue adduct. When acid is added, the reaction is reversed.
Explanation:yes
Answer:
Ammonia is added to a solution containing copper chloride, producing the deep blue adduct. When acid is added, the reaction is reversed.
Explanation:
Right the 2 sentences please thanks :)
Answer:
In science class me and my brother had a stem fair project where we had to find out the independent variable of our project
When water becomes ice it becomes a dependant variable
Explanation:
How fast can a turbidity bed form
Answer:
a matter of hours
Explanation:
Ms. Raymond writes about the benefits of producing crops which are resistant to weed-killers. Many agricultural crops have been documented to cross-pollinate with wild plants. What could be a danger to the environment of crops which are resistant to weed-killers?
Answer:
Negative effects of weed-killer-resistant crops can include decreased diversity and abundance of wild plants, problems with grain contamination, segregation and introgression of herbicide-resistant traits, and marketplace acceptance, resulting in an increased reliance on herbicides for weed control.
Explanation:
I hope this helps!
Which gas is most likely to act as an ideal gas at STP?
A. hydrogen
B. Oxygen
C. methane
D. carbon dioxide
Oxygen gas is most likely to act as an ideal gas at STP. Therefore, option B is correct.
What is an ideal gas?An ideal gas is a hypothetical gas composed of randomly moving point particles without interparticle interactions. The ideal gas is useful because it follows the ideal gas law.
Under various conditions of temperature or pressure, many real gases behave like an ideal gas where the gas molecules as the ideal particles. Many gases such as nitrogen gas, oxygen gas, hydrogen gas, noble gases, some heavier gases such as carbon dioxide, and mixtures such as air, can be treated as ideal gases.
A gas behaves more likely as an ideal gas at higher temperature and lower pressure, as the potential energy because intermolecular forces become less and the size becomes less significant compared to the vacant space between them.
One mole of an ideal gas has a volume of 22.7 liters at standard temperature and pressure. At high pressures, the volume of a real gas is generally larger than that of an ideal gas.
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C4 and cam plants are _______. a. adaptations to arid environments b. adaptations to moist environments c. more common than c3 plants d. less efficient at water conservation than c3 plants
The correct answer to the question is option (A)- Adaption to arid environment. C4 and CAM plants are adaptations to arid environment. Arid environment is the environment which has no water for the plants that grow in it.
500 cm3 of a solution has a concentration of 1. 5mol/dm3 how many moles are in the solution?
Answer:
There is 0.75moles in the solution
Answer:
Explanation:
concentration=no.of moles/volume in dm3
which is
1.5mol/dm3 multiply by 500/1000
=0.75moles
which type of reaction is represented by the generic equation AB+CD>AD+CB
Answer:
The answer is Double - Replacement Reactions
Explanation:
Double - Replacement Reactions are two different things that change places with each other.
What is the density of an object with a mass of 16 g and 3.0 ml
Answer:
D = 5.3 g/mL
Explanation:
Density = Mass over Volume
D = m/V
Step 1: Define
D = unknown
m = 16 g
v = 3.0 mL
Step 2: Substitute and Evaluate
D = 16 g / 3.0 mL
D = 5.333333333 g/mL
Step 3: Simplify
We have 2 sig figs.
5.333333333 g/mL ≈ 5.3 g/mL
Explan respinsible behaviour inthe computer
Answer:
This can be done with Python. If you learn machine learning, you can use python to automate your computers to do things.
2 things you can do with a computer with python + moreMake and run games or applications easierYour computer can send or tell you messages at a given time.I hope this answers you. If not, I may change something accordingly.
Copper reacts with sulfur to form copper (i) sulfide, according to the balanced equation below. 2cu s → cu2s given that there are 40.2 g cu and 14.1 g s, complete the steps below to determine the limiting and excess reactants in the last question. how many moles are in 40.2 g cu? mol cu how many moles are in 14.1 g s? mol s
The limiting reactant would be Cu and the excess reactant would be S.
Stoichiometric reactantFrom the equation:
2Cu + S → Cu2S
Mole ratio of Cu to S = 2:1
Mole of 40.2 g Cu = 40.2/63.55
= 0.63 moles
Mole of 14.1 g of S = 14.1/32.07
= 0.44 moles
Equivalent mole of Cu = 0.44 x 2 = 0.88 moles
Thus, Cu is limiting while S is in excess.
More on stoichiometric calculations can be found here: https://brainly.com/question/8062886
Answer:
The first two are 0.633 and 0.440
The answer for the next sentence is Copper and Sulfur
if your not sure pls don’t answer.this is science btw.
Answer:
north and south
Answer:
north and south
Explanation:
!!
3. Are quartz and coal minerals or only naturally occurring
substances?
Answer:
minerals
Explanation:
coal is made from decomposing matter
The deciduous forest supports a diverse ecology. A warm growing season with abundant moisture encourages plants to grow, and the ground is covered with small plants, flowers, ferns, and grasses. In spring the trees and shrubs produce new leaves and colorful flowers. In summer the tall trees cast shade on the forest floor, providing ideal growing conditions for shade-tolerant plants. Seeds and berries provide for plant reproduction, and feed small rodents and birds. The leaves that fall in the autumn provide plenty of material for decomposers, soil bacteria, worms, grubs, and fungi. All these plants together are the primary producers. If berries were destroyed and taken out of the food web, which organisms would be directly affected? *
10 points
Captionless Image
The snake, the owl, and the fox would be directly affected by the loss of berries.
The mouse and the frog would be directly affected by the loss of berries.
No organisms in the food web would be directly affected by the loss of berries.
The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Answer:
The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Explanation:
Refer to the attached picture below.
The arrows in the diagram represent which way the energy flows. There are only three ways the energy flows directly to an organism. Those are to the grasshopper, the frog, and the rabbit. (in the picture below, these are circled in red.)
Therefore, we can assume that the correct answer would be D. The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Hope this helps! Brainliest would be much appreciated. Have a great day!
Temperature is a measure of the amount of heat energy in an object. True False
Answer:
True
Explanation:
Temperature is a direct measure of thermal energy, which means that the hotter an object is, the more thermal energy it possesses. The amount of thermal energy transferred between two systems is measured as heat. It is simple to convert mechanical energy to thermal energy, for example, through friction.
Answer:
False.
Explanation:
I did this lesson and I clicked true and got it wrong.
please help i dont get it
Answer:
needs?
Explanation:
we NEED water, shelter, space and food to survive.
Can someone please help me? :(
Answer:
B.
Explanation: Because it's at the bottom of the layer so it gets least sun and solar energy.
How do tides generate electricity?
Answer:
Tidal power surrounds gravitational hydropower, which uses the movement of water to push a turbine to generate electricity.
Explanation:
:)
Answer:
hydropower that works by harnessing the kinetic energy created by the rise and falls of the tides.
Explanation:
I already gave you the answer this morning but here's the answer again