Answer:
genetics
hope this helps :)
Explanation:
A metal object has a density of 2 g/ml. When placed in a graduated cylinder with 500 ml of water, the
water rises to 508 ml. What is the mass of the metal object?
Answer:
The answer is 16 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density = 2 g/ml
volume = final volume of water - initial volume of water
volume = 508 - 500 = 8 mL
We have
mass = 2 × 8
We have the final answer as
16 gHope this helps you
What is Mercury's proximity to the sun
PLEASE HELPP
Answer:
46.943 million km
Explanation:
From an average distance of 36 million miles (58 million kilometers), Mercury is 0.4 astronomical units away from the Sun.
From an average distance of 36 million miles (58 million kilometres), Mercury is 0.4 astronomical units away from the Sun.
(I hope this helped ^^)
Part 1)
There is a storage container with 5.25 tons of Ammonia (NH3). How many molecules of Ammonia are there?
Answer:
1.69×10²⁹ molecules.
Explanation:
The following data were obtained from the question:
Mass of Ammonia (NH3) = 5.25 tons
Molecules of Ammonia (NH3) =.?
Next, we shall convert 5.25 tons to grams (g). This can be obtained as follow:
1 ton = 907184.74 g
Therefore,
5.25 ton = 5.25 ton × 907184.74 g / 1 ton
5.25 ton = 4762719.885 g
Therefore, 5.25 tons is equivalent to 4762719.885 g
Finally, we shall determine the number of molecules of ammonia, NH3 in 4762719.885 g. This can be obtained as follow:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ molecules. This implies that 1 mole of ammonia, NH3 also contains 6.02×10²³ molecules.
1 mole of ammonia, NH3 = 14 + (3x1) = 14 + 3 = 17 g
17 g of ammonia, NH3 contains 6.02×10²³ molecules.
Therefore, 4762719.885 g of ammonia, NH3 will contain = (4762719.885 × 6.02×10²³) / 17 = 1.69×10²⁹ molecules.
From the calculations made above,
5.25 tons (4762719.885 g) of ammonia, NH3 contains 1.69×10²⁹ molecules.
The volume of a candy bar is 55cm^3. The mass of the candy bar is 70g. What is the density of the candy bar in g/cm^3
Answer:
1.3 g/cm3
Explanation:
Aquanauts explore the area called?
Answer:
Inner space
Explanation:
I hope this helps
In science class, a student is given a copper cylinder to investigate. The student measures the mass of the cylinder as 53.76 grams. The
student measures the volume of the copper as 6 cm. Which additional property of the copper can the student determine from these
measurements?
Answer:
From these two values, i.e. mass and volume, density of the copper cylinder can be calculated.
Formula of density is :
Density = Mass / volume.
Now we have mass: 53.76g and volume 6cm³
Density = 53.76 / 6
Density= 8.96 g/cm³
3. The nucleus:
a. controls all the cell activities
b. controls only part of the cell
c. does not have any activity
Answer:
a. controls all the cell activities.Thank you ☺️
please hurry i’m taking a test
Answer:
im pretty sure its move at a constant rate to the right
Which statement about the masses of subatomic particals is true?
A. Electrons and neutrons have similar masses.
B. Neutrons and protons have similar masses.
C. Electrons, protons and neutrons have similar masses.
D. Electrons, protons and neutrons have very diffren´t masses.
Oxygen atoms have six outer electrons
Write the symbol for an oxide ion.
Answer:
[tex]O^{2-}[/tex] is the symbol for an oxide ion
I need help again LOL.
Answer:
They require diffrent types of atoms for their makeup I belive is the answer Hope this helps
Explanation: Wow you have a lot a questions XD :D :3
Element: A substance that is made up of only one type of atom. Compound: A substance that is made up of more than one type of atom bonded together. Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.
i hope this helps
GIVING 5 STARS AND BRAINLY IF YOU ANSWER FIRST AND CORRECTLY
Please answer asap. Thank you.
QUESTION:
How many total elements are involved in the process of photosynthesis?
A. 2
B. 3
C. 4
D. 5
what does CER mean for science?
Explanation:
Claim, Evidence, Reasoning (CER) model, an explanation consists of: A claim that answers the question. Evidence from students' data. Reasoning that involves a rule or scientific principle that describes why the evidence supports the claim.
What metal is Potassium (K)?
Explanation:
Potassium is a chemical element with the symbol K and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure
Answer:
alkali metalExplanation:
Potassium is a chemical element with symbol K and atomic number 19. Classified as an alkali metalWhich phrase is most similar in meaning to “scientific theory”?
A. a best guess explanation
B. a rigorously tested explanation
C. an opinion of what should happen
D. a mathematical relationship
Answer:
c
Explanation:
Answer:
A. a best guess explanation
Explanation:
A scientific theory explains why something behaves the way it does and is usually backed up by different sources. They are not speculations and can be proven. Those which are speculations and are not proven are called hypothesis. A scientific theory can also be replaced, if it is found that it does not produce valid results, or if a better theory is proposed which is made of one or more old theories.
Is steam a water , oxygen or hydrogen molecule ?
Answer:
In thermolysis, water molecules split into their atomic components hydrogen and oxygen. For example, at 2200 °C about three percent of all H2O are dissociated into various combinations of hydrogen and oxygen atoms, mostly H, H2, O, O2, and OH.
Explanation:
8. Which word best describes the element in box number 2?
a а Brittle
b Gas
С Semiconductor
d. Shiny
Answer:
gas
Explanation:
i think it might be gas
clarify the following expression s
a.atomic number
b.mass number
c.nucleus
Answer:
Atomic number of a chemical element is the number of protons found in the nucleus of every atom of that element.
The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus.
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom.
I need help in chemistry!!!!!!!!!!!
Answer:
ok whats the question dude just ask :PPPPPPPPPPPPPPPPPPPPPP
OTHERWISE EOEOEEOEOEOOEOEOEOEOEOOEOWOWOWOWOW
wow is mom upide down
Explanation:
PLEASE HELP!
Why do atoms share electrons in covalent bonds?
A. to attain a noble-gas electron configuration
B. to become more polar
C. to become ions and attract each other
D. to increase their atomic numbers
Answer:
Answer Option A) To attain a noble-gas electron configuration.
Explanation:
Correct answer from test
Taking into account the definition of covalent bond and octet rule, the correct answer is option A. Atoms share electrons in covalent bonds to achieve a noble gas electron configuration.
The covalent bond is the chemical bond that occurs between atoms of non-metallic elements. These atoms have many electrons at their outermost level and have a tendency to share them to acquire the stability of the noble gas electronic structure. In this way a molecule is formed.
The tendency of the elements to reach a stable configuration is known as the octet rule. For this, the octet rule explains that there must be eight electrons in their last energy levels, thus acquiring the structure of a noble gas.
So, a covalent bond is a force that joins two atoms of non-metallic elements to form a molecule in order to comply with the octet rule.
Finally, the correct answer is option A. Atoms share electrons in covalent bonds to achieve a noble gas electron configuration.
Learn more:
https://brainly.com/question/14149997?referrer=searchResultshttps://brainly.com/question/12694836?referrer=searchResultshttps://brainly.com/question/2959530?referrer=searchResultsWhat is hydrochloride acid plus water plus salt and water
When calculating percent error, the accepted value is in the denominator
True or false
Answer:
True
Explanation:
what do you mean by international understanding peace
and cooperation
Answer:
International understanding or internationalism is a feeling that the individual is a not only a member of his country, but a member of the world as well. To ensure world peace. To prevent world wars. To promote human welfare. To promote mutual understanding and interdependence.
1. Collect data: Create two water cycles using the Gizmo. Each cycle should have at least four steps and should begin and end at the same location. Choose any starting point from the list on the right. When the cycle is complete, choose the PATH tab and write the steps below.
Answer:
Cycle 1: Lake,atmosphere, clouds,rain,lake
Cycle 2: Atmosphere, clouds, rain, ocean
Which indicates that thermal energy is no longer being transferred from boiling water to a mug?
The mug and the water lose all thermal energy.
The water is hotter than the mug.
The mug is hotter than the water.
The water and the mug are the same temperature.
Answer:
Which indicates that thermal energy is no longer being transferred from boiling water to a mug?
The mug and the water lose all thermal energy.
The water is hotter than the mug.
The mug is hotter than the water.
•The water and the mug are the same temperature.
Explanation:
answer #D is correct
When the water and the mug are at the same temperature then thermal energy will no longer be transferred from the boiling water to the mug. Therefore, option (D) is correct.
What is thermal energy?Thermal energy is generated in a substance when an increase in temperature causes atoms and molecules to move at a faster speed and result in the molecules colliding with each other. The energy generated from the temperature of the heated material is called thermal energy.
Thermal Energy or internal kinetic energy is because of the random motion of molecules in the system. The thermal energy of any system is directly proportional to its temperature.
The more the temperature of the system, the more the movement of molecules within a given system, and the more the thermal energy of the system.
The thermal energy will be transferred from the boiling water to the mug when the water is hotter than the mug. When both have the same temperature then the thermal energy is no longer being transferred from boiling water to a mug.
Learn more about thermal energy, here:
brainly.com/question/14506133
#SPJ6
Based on the Phase Change Graph below, what is the Melting Point for this point
substance?
Answer:
Where is the phase melting graph? Can't seem to find it
Which RNA strand would match with this DNA strand?
AGGCTAAT
What is the DNA strand? You have not named it.
what is biogas, biomass and biodigester
Answer:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste. When organic matter, such as food scraps and animal waste, break down in an anaerobic environment (an environment absent of oxygen) they release a blend of gases, primarily methane and carbon dioxide.
Explanation:
Biomass is renewable organic material that comes from plants and animals. ... Biomass contains stored chemical energy from the sun. Plants produce biomass through photosynthesis. Biomass can be burned directly for heat or converted to renewable liquid and gaseous fuels through various processes.biodigester is like a mechanical stomach. It is fed with organic material, which is broken down (decomposed) by micro-organisms (bacteria) is an oxygen-free (anaerobic) environment to produce a renewable energy called biogas (methane and carbon dioxide) and other material that is mainly used as fertilizer.
Explanation:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste.
Biomass is plant or animal material used for energy production, or in various industrial processes as raw substance for a range of products.
A Biodigester simply means a tank which digests organic material biologically. In this sense, the FilterPod is a biodigester. However, many people think of a biodigester as a tank which digests, anaerobically, without air, organic material and produces methane gas for cooking, lighting and heating ect.
Which statement about aldehydes and ketones is correct?
A) In aldehydes, the carbon is always joined to at least one hydrogen atom.
B)Every ketone molecular formula is unique.
C) Aldehydes are similar to ketones, but their carbonyl group is located in the middle of the carbon chain.
D) In ketones, the carbon of their carbonyl group is bonded with one other carbon.
Answer:
A) In aldehydes, the carbon is always joined to at least one hydrogen atom.
Explanation:
Aldehydes and Ketones are organic compounds.
The main difference between them is that aldehydes have the carbon atom attached to at least one hydrogen atom.
In ketones, the carbon is attached to another carbon.
The IUPAC names of alkanals usually end with -eFor alkanones usually end with -oneTo reiterate, the striking difference between the two families is that in alkanals, a hydrogen atom is directly attached to the carbonyl group while in alkanones, no hydrogen atoms is attached to the carbonyl group but two bulky alkyl groups.
Chemistry Data Analysis --
7.86 x 10^-15 x 3.9 x 10^-10
Answer:
3.065 x 10^-24
Explanation:
hope this helps