Answer: Porous rock has gaps between rock particles that can fill with water. but i’m not 100% sure
Explanation:
Answer:
porous rock has gap between rock particles that can fill with water
18. What is the volume of these gases at STP?
a. 3.20 x 10 mol CO2
b. 3.70 mol NH2
C. 0.960 mol CH4
Answer:
B 3.70 mol NH2
Explanation:
Answer:
A. 0.0717 L
B. 82.9 L
C. 21.5 L
hỗn hợp E gồm 6 este có cùng CTPT C8H8O2 và đều chứa vòng benzen. Cho 68g phản ứng tối đa với V ml dd NaOH 1M đun nống, thu được 15g muối và 77,4g hh ancol Y. Giá trị của V là?
Explanation:
just a few days ago and I have a
Which substance tends to form anions when bonding with other elements?
oxygen
calcium
argon
sodium
Answer:
A) Oxygen
Explanation:
i just took the test.
2+2+2 plssssssssssssssssssssssssss
Answer:
6
Explanation:
2+2+2=6 :)
Answer:
6
Explanation:
vvvffhjh DC hcf vhcnbfhbc
In a chemical reaction, the arrangement of atoms blank a reaction are rearranged blank the reaction.
Answer:
i dont care to you
Explanation:
cause you are tuyo
a substance composed of two or more metals.
Answer:
A substance composed of two or more metals is called an alloy
Explanation:
ADVANTAGES AND DISADVANATAGES oF genectic enginerring
Advantages of Genetic Engineering?
1. It allows for a faster growth rate.
2. It can create an extended life.
3. Specific traits can be developed.
Plants and animals can have specific traits developed through genetic engineering that can make them more attractive to use or consumption. Different colors can be created to produce a wider range of produce. Animals can be modified to produce more milk, grow more muscle tissue, or produce different coats so that a wider range of fabrics can be created.
4. New products can be created.
5. Greater yields can be produced.
Genetic engineering can also change the traits of plants or animals so that they produce greater yields per plant. More fruits can be produced per tree, which creates a greater food supply and more profits for a farmer. It also creates the potential for using modified organisms in multiple ways because there is a greater yield available. Modified corn, for example, can be used for specific purposes, such as animal feed, ethanol, or larger cobs for human consumption.
6. Risks to the local water supply are reduced.
Because farmers and growers do not need to apply as many pesticides or herbicides to their croplands due to genetic engineering, fewer applications to the soil need to occur. This protects the local watershed and reduces the risk of an adverse event occurring without risking the yield and profitability that is needed.
7. It is a scientific practice that has been in place for millennia.
Humans in the past may not have been able to directly modify the DNA of a plant or animal in a laboratory, but they still practiced genetic engineering through selective breeding and cross-species or cross-breeding. People would identify specific traits, seek out other plants or animals that had similar traits, and then breed them together to create a specific result. Genetic engineering just speeds up this process and can predict an outcome with greater regularity.
What Are the Disadvantages of Genetic Engineering?
1. The nutritional value of foods can be less.
When animals grow, and mature quickly, the nutritional value of that product can be reduced. This can be seen in poultry products today with the white striping that is found in meat products. That striping is a fat deposit that was created, often in the breast meat, because of the rapid growth of the bird. In chickens, Good Housekeeping reports that this can increase the fat content of the meat consumed by over 220%. At the same time, the amount of protein that is received is also reduced.
2. Pathogens adapt to the new genetic profiles.
Genetic engineering can create a natural resistance against certain pathogens for plants and animals, but the natural evolutionary process is geared toward creating pathways. Bacteria and viruses evolve a resistance to the resistance that is created by the genetic engineering efforts. This causes the pathogens to become stronger and more resistant than they normally would be, potentially creating future health concerns that are unforeseen.
3. There can be negative side effects that are unexpected.
Genetic engineering is guaranteed to make a change. Many of those changes are positive, creating more and healthier foods. Some of those changes, however, can be negative and unexpected. Making a plant become more tolerant to drought might also make that plant become less tolerant to direct sunlight. Animals may be modified to produce more milk, but have a shortened lifespan at the same time so farmers suffer a greater livestock.
4. The amount of diversity developed can be less favorable.
At some point, genetically engineered plants and animals make it “into the wild” and interact with domestic species. This results in a crossing of “natural” and “artificial” organisms. The engineered organisms often dominate, resulting in only a modified species over several generations, reducing the diversity that is available.
5. Copyrighted genetic engineering can have costly consequences.
Many companies copyright their genetic engineering processes or products to maintain their profitability. If a farmer plants genetically modified crops and the pollination process causes another farmer in the field over to have those modified crops grow, there have been precedents for legal actions against the “unauthorized” farmer. This can have several costly consequences, from fewer farmers wanting to work to a higher cost for the seeds that are planted.
6. This knowledge and technology can be easily abused.
At the moment, genetic engineering in humans is being used to treat specific disorders that threaten the health or wellbeing of individuals. In time, the approach in humans could be like what is already being done with plants and animals. Genetic engineering can change specific traits, which could create human outcomes that are ethically questionable or easily abused.
Can two different substances have the same percent composition by mass?
Answer:
Although the terms mass percent and percent composition are used interchangeably, they are different terms. The mass percent refers to the percentage of a component in a mixture, while the percent composition refers to the percentage of a particular chemical element in a mixture.
Explanation:
Hope this helps...
Helpppppppppppppppppppp
Answer:
option B it was captured by earth's gravity
Explanation:
please Brinlmark me please
why is polystyrene soluble in acetone and not water
Polystyrene and acetone are not soluble in water because they are non-polar substances.
A polar substance is a substance that has opposite charges on two ends of the molecule. In polar molecules, a dipole moment exists in the molecule and accounts for its interaction with water.
Water is a polar solvent. It can only dissolve polar molecules. Since polystyrene and acetone are both non-polar substances, polystyrene dissolves in acetone and not in water.
This agrees with the principle in chemistry that like dissolves like.
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please help! will give a thanks
Answer:
Scientific Law
Explanation: Earth will ALWAYS attract objects to the center of itself because of gravity. This will never be disproven.
what type of solute causes the hydrogen ion concentration of a solution to decrease, which results in a high ph value?
Answer:
basic
Explanation:
like water to an acid or na2co3 or even diluting an acid causes its ph to increase
the various geologic settings in which rocks can melt, metamorphose, or become sediment are ultimately generated by
Geological settings whereby there is melting of rock as well as formation of sediments can be attributed to Plate tectonics .
Plate tectonics can be regarded as theory which explained the Earth's outer shell and how its been divided into solid rocks as well as slabs and its often referred to as Plate.
Plate tectonics explained that there is a large-scale motion plates which Earth's lithosphere is made up.Tectonic processes started about 3.3 and 3.5 billion years ago. Through the generation of Tectonic plate, there are melting of rocks as well as generation of sedimentsThe types of boundaries that exist between those tectonic plates can be categorized into 4, base on the the movement of the plates, and these are;divergent boundariesconvergent boundariestransform fault boundaries plate boundary zonesTherefore, plate tectonic gives explanation about Earth's outer shell.
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Copper has two naturally occurring isotopes: Cu-63 with mass 62.9395 amu and a natural abundance of 69.17% and Cu-65 with mass 64.9278 amu and a natural abundance of 30.83%. Calculate the atomic mass of copper.
Answer
63.55
Explanation:
63
C
u
has
69.2
%
abundance.
65
C
u
has
30.8
%
abundance.
So, the weighted average is
62.93
×
69.2
%
+
64.93
×
30.8
%
molecular formula of sulphur trioxide by criss cross method
Answer:
Sulfur trioxide: SO3.
Explanation:
How I came to this conclusion:
I noticed that the compound consists of non-metals, therefore it must be a covalent compound -
meaning I use prefixes for compounds.
Sulfur is S. Simple enough. Trioxide has the prefix of tri, meaning "3". Therefore there is 3 atoms of oxygen. Combine them and I get SO3.
Don't be confused with sulfite: (SO3)2− and sulfate: (SO4)2−
What is an Atom? please help
Answer:
An atom is the basic building block of matter. Anything that has a mass-- in other words, anything that occupies space--is composed of atoms.
Answer:
An atom is a particle of matter that uniquely defines achemical element.
Explanation:
this might help you
If you have 24.19 moles of nickel, how many atoms do you have?
Answer:
No idea
Explanation:
I'll tell u how to do it. You multiply by amidagros number. that is how many atoms you have. Your welcome.
As an atom gains extra electrons, it also changes size. How does the size change, and what causes the change?
The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.
The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.
The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.
The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.
The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.
The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.
The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.
The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.
first to answer gets 50 points
Answer:
Expl
Electron: A negatively charged particle found circling or orbiting an atomic nucleus. An electron, like a proton is a charged particle, although opposite in sign, but unlike a proton, an electron has negligible atomic mass. Electrons contribute no atomic mass units to the total atomic weight of an atom.\anation:
how many sets of lone pairs are around sulfur in sf4?
Answer:
One Lone Pair. (I think)
Explanation:
since we cannot measure to absolute zero, how can we determine what the volume will be at that temperature?
Answer:
We can measure volumes approaching absolute zero and then predict what the volume would be at absolute zero.
Since there is NO molecular motion at absolute zero, the volume of a balloon at absolute zero should be zero.
If you headed to the deepest recesses of intergalactic space, shielded from starlight, the only thing that would heat you up would be the Big Bang's leftover glow: the cosmic microwave background at 2olume.ht v725 K. At that temperature, the balloon would have a volume.
Charles' Law asserts that a gas's volume (V) and temperature (T), which must be expressed in Kelvin, are directly proportional to one another. A change in temperature of one Kelvin unit corresponds to a change in one Celsius degree. Never forget that the value 0 on the Kelvin scale corresponds to -273 or "Absolute Zero."
What will the volume be at absolute zero, and how can we calculate it?Charles's Law, V = a T+ b, is used to calculate absolute zero once the mass measurements are transformed to high and low temperature gas volumes.
The volume of an ideal gas would theoretically be 0 at absolute zero, and there would be no more molecular motion. Actually, above this temperature, all gases condense into solids or liquids.
According to Boyle's Law, gas volume grows as pressure lowers. Charles' Law states that when the temperature rises, the volume of the gas increases.
Gases compress infinitely as the temperature is lowered because there is a linear relationship between temperature and pressure for the majority of gases (see gas laws). The volume of an ideal gas would theoretically be 0 at absolute zero, and there would be no more molecular motion.
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what is the relationship between temperature and pressure pls
Answer:
When the temperature of a system goes up, the pressure also goes up, and vice versa. The relationship between pressure and temperature of a gas is stated by the Gay-Lussac's law.
Answer:
We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant); if the temperature on the kelvin scale increases by a certain factor, the gas pressure increases by the same factor.
Convert 4.36 x 10 square 25 molecules of CH3OH to moles.
Answer:
72.43 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{4.36 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 72.425249[/tex]
We have the final answer as
72.43 molesHope this helps you
Is table sugar(sucrose) a substance or a mixture
Answer: its a compound
Patterns are everywhere in science. Is there a pattern in how one can predict how many covalent bonds an atom will form? Explain your reasoning or provide evidence to support your answer.
HELP
Actual answer: 6
Well I also need help with this, this should help the both of us:
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Explanation:
The first two period elements can form maximum 4 covalent bonds. However, third or higher period elements can make higher number of bonds for example; SF6.
which type of control agent exerts noncompetitive inhibition?
Answer:
D
Explanation:
If your choices are:
a) Substrate analog
b) Protein kinase
c) Allosteric effector
d) Both (b) and (c).
then your answer is D :)
Energy is released into the cell by
Answer:
cellular respiration
Explanation:
546.8910 - 32.9 = ? Remember to use the appropriate significant figures.
513.991
Explanation:
546.8910
- 32.9
-----------
513.991
-----------
did this help ??
How does heat affect solubility of solids in a liquid?
A. The particles of a solid lose their shape and do not dissolve properly when heated
B. Solubility is not affected by heat.
C. Solubility generally decreases with heat.
D. Solubility generally increases with heat.
Answer:
Option D
Explanation:
Solubility is the amount of a substance in a solvent that dissolves at a specific temperature. So knowing this you would know that generally when you increase the temperature it also increases the solubility of a substance which means the answer is option D or "Solubility generally increases with heat."
Hope this helps.
Answer:
D.) Solubility generally increases with heat
Explanation:
I got it correct on founders edtell
I need help I don’t understand it and I need it done before the end of today
Answer:
May be trial 2..................
Which group will have an electron configuration that ends in s2?
a
Alkali metals (Group 1)
b
Halogens (Group 17)
c
Alkaline earth metals (Group 2)
d
Noble gases (Group 18)
Group 2 metals have 2 electrons in their outer shell. These two electrons are usually found in the s orbital, hence the s².