Answer:
the pH is 2
Explanation:
pH=-log[H+]
pH=-log[1E-2]
pH=2
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.
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.
how many columns are there in the s blocks of the periodic table
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.
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When a material made of iron rusts, its mass increases so does this observations violate the law of conservation of mass?
How fast can a turbidity bed form
Answer:
a matter of hours
Explanation:
If a spacecraft was parked on Venus and needed to make a flight to Jupiter, how far would it need to travel? Please show your work.
Answer:
If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.
Explanation:
Jupiter - Various Properties
Jupiter Meaning:
Jupiter is the largest planet in the solar system. Fittingly, it was named after the king of the gods in Roman mythology. In a similar manner, the ancient Greeks named the planet after Zeus, the king of the Greek pantheon.
Jupiter is a gas giant that is the 5th planet from the sun. It is known as the biggest planet in the solar system. It is a very marvelous planet regarding the characteristics of the atmosphere and “surface” of the planet.The planet is a gas giant, so the whole planet that could’ve been the crust and the mantle is full of poisonous gases. Except for the core, it is full of rocky metals. The planet Jupiter has approximately 70 moons. Jupiter has a high gravitational pull, so it can easily grasp some satellites or other rocky bodies into its collection.Jupiter’s distance from the sun is 483.8 million miles.It’s orbital period is 12 earth years.Jupiter’s length of a day is 9 hours and 56 minutes.Jupiter has a radius of 43,441 miles.Has a gravity of 24.79 m/s squared.Venus - Various Properties
It's very hot. It has a thick dense atmosphere bloated with strong greenhouse gasses.Its also the second brightest celestial body when viewed from Earth due to its reflective gasses.It is also very volcanically active. From what we know now, Venus has no tectonic plates.Venus is also very similar in size to Earth.Venus Meaning:
Venus (plural veneres) is the Latin word for ‘loveliness,’ ‘beauty,’ ‘charm,’ It is derived from Proto-Italic *wenos- ('desire'). The ultimate source is the Proto-Indo-European (PIE) *wenh₁-os ('desire').
---------------------------------------------------------------------------------------------------To calculate how far the spacecraft would need to fly is to calculate the distance betwen Venus and Jupiter.
To save energy, let's consider a Hohmann transfer orbit, an ellipse tangent to opposite sides of Venus's and Jupiter's orbits. The spacecraft would follow the outbound half of this orbit, departing ahead of Venus and arriving as Jupiter overtakes it.
Depending on where in Jupiter's orbit the spacecraft meets it, this orbit has semi-major axis a = (rV + rJ) / 2 = 2.96±0.03 au and period of a3/2 = 5.10±0.08 years. The outbound half has a path length of 7.78±0.07 au and takes 2.55±0.04 years. As Jupiter moves 72° to 84° around the Sun in that time, the launch window is when Venus's heliocentric ecliptic longitude is 96° to 108° behind Jupiter's.
To convert au to km, multiply by 1.496 × 108 km / au.
---------------------------------------------------------------------------------------------------Answer:If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.
Answer:
If a spacecraft was parked on Venus and needed to make a flight to Jupiter, it would need to travel 670,338,270 km.
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:
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
please help will mark brainliest
1) what proccess can be used to extract pure water from salt water ?
2) how is an element different to a compound
Answer:
1= simple distillation
2 - elements contain just one type of atom ; compounds contain atoms of at least two different elements , which have been chemically combined or bonded
Explanation:
hope this helps
Answer:
chromotragraphy
because it has mixture of compounds and elements
i think these are the answers
Explanation:
please help... thanks... please take all the time you need. :D
Answer:
1. The vernal equinox
- happens around March 21st
- has days and nights of equal length
2. In the southern hemisphere, the longest day happens during
- June
3. During the winter in the northern hemisphere
- the days are shorter than during summer
Answer:
1)the vernal equinox happens around March 21st
2)in the southern hemisphere the longest day of the year happens during december
3)The days are shorter then during the summer.
Explanation:
please help i dont get it
Answer:
needs?
Explanation:
we NEED water, shelter, space and food to survive.
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 a balanced equation?
Answer:
A balanced equation is a chemical equation where there are equal numbers of atoms of each element on both sides of the equation.
A chemical equation that has a equal amount of each
each element on the left and right sides
How many F atoms in 40 grams CuF2?
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.
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.
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
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!
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
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
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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If 45.0 grams of magnesium hydroxide (fm = 58.33 grams) is reacted, how much water (fm = 18.02 grams) will be produced?
group of answer choices
13.9 grams
72.8 grams
27.8 grams
146 grams
If 45.0 grams of magnesium hydroxide is heated, the amount of water that will be produced would be 13.90 grams
Stoichiometric calculationsFrom the equation of the reaction:
Mg(OH)₂ → MgO + H₂O
The mole ratio of Mg(OH)₂ to H₂O is 1:1
Mole of 45 grams Mg(OH)₂ = 45/58.33 = 0.77 moles
Thus, the equivalent mole of H₂O produced would also be 0.77 moles.
Mass of 0.77 moles H₂O = 0.77 x 18.02 = 13.90 grams
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Which of these substances is the most basic (alkaline)? solution A, pOH = 1. 5 solution B, pOH = 7. 0 solution C, pOH = 13. 5.
pH of solution A is 12.5 and it is the most basic (alkaline) among all.
What is basic solution?Those solution which are having value more than 7 in the pH scale shows the basic character and relation between pH & pOH will be represented as:
pH + pOH = 14
Now we calculate the pH for given solutions:
For solution A, pOH = 1.5
pH = 14 - 1.5 = 12.5
For solution B, pOH = 7
pH = 14 - 7 = 7
For solution C, pOH = 13.5
pH = 14 - 13.5 = 0.5
Value of pH for solution A is highest and shows basic nature, solution B is neutral and solution C is acidic in nature.
Hence, solution A is most basic.
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What could happen to homeostasis if the nervous system and the endocrine system stop communicating? Use one specific example in your answer.
Answer:
What could happen if the nervous system and the endocrine system stopped communicating is that body regulation functions would be lost, constituting the loss of organic balance or homeostasis.
Explanation:
There is a close relationship between the nervous and endocrine systems, or what is also known as the neuroendocrine system.
The nervous system is in charge of the regulation of all the vital functions, receiving external information, processing it and elaborating an adequate response. When it comes to the internal functions of the organism, the endocrine system receives orders from the nervous system to regulate them and maintain homeostasis.
If the communication between Nervous system and the endocrine system did not exist, there would be no way to regulate many functions and the organism would lose its ability to maintain internal balance.
An example of this would be the function of vasopressin or antidiuretic hormone (ADH). This hormone is produced by the hypothalamus and released by the neurohypophysis, being its main function the regulation of the hydroelectrolytic balance. If the communication between both systems did not exist, the function of ADH would not be possible, and the hydroelectrolytic balance would be lost.
If there is no communication between Nervous system and the endocrine system, there would be no way to regulate many functions and the organism would lose its ability to maintain internal balance.
⇒For example:
The activity and role of the adrenal glands in response to stress provide an excellent example of interdependency of the nervous and endocrine systems and if there is no communication between the two systems thus there will be no activity of adrenal glands.
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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.
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.
A unit of length in the metric system is the
Answer:
B) kilometer.
Explanation:
Took the test
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.
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Answer:
The first two are 0.633 and 0.440
The answer for the next sentence is Copper and Sulfur
This is a group of protons and neutrons in the center of all atoms.
Answer:
nucleus
Explanation: