Answer:
This question is incomplete
Explanation:
The question is incomplete without the options. However, when a metal (in this case what the pennies are made of) is left in direct contact with the heat from the sun, it conducts this heat and becomes hot. This process is called thermal conduction. The thermal energy is readily accepted by the material in which the pennies are made of thereby increasing the thermal energy of the penny coin which then makes the pennies hot after being left under the sun.
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 ^^)
What questions might remain that will one day be answered by new technology?
Answer:
Can we find a safe cure for cancer?
Explanation:
pls mark brainliest
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
please hurry i’m taking a test
Answer:
im pretty sure its move at a constant rate to the right
What would happen if there were 3 protons and 0 neutrons in the nucleus of an atom?
Answer:
the atom will be positife atom
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.
Chemistry Data Analysis --
7.86 x 10^-15 x 3.9 x 10^-10
Answer:
3.065 x 10^-24
Explanation:
hope this helps
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.
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:
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:
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What is hydrochloride acid plus water plus salt and water
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.
Which RNA strand would match with this DNA strand?
AGGCTAAT
What is the DNA strand? You have not named it.
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.
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 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 metalAquanauts explore the area called?
Answer:
Inner space
Explanation:
I hope this helps
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
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
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 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.
Which 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.
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
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
When calculating percent error, the accepted value is in the denominator
True or false
Answer:
True
Explanation:
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 ☺️
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
What happens to an egg that is not fertilized?
OIt is reabsorbed by the body
O It travels back up the fallopian tube.
OIt exits during childbirth.
O It is released during menstruation
Answer:
D. It is released during menstruation
Explanation:
The egg that is not fertilized is released during the process of menstruation.
What is menstruation?
Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone levels and is a sign that pregnancy has not occurred.
The first period, a point in time known as menarche, usually begins between the ages of 12 and 15.Menstruation starting as young as 8 years would still be considered normal.The average age of the first period is generally later in the developing world, and earlier in the developed world. The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women. In adults, the range is between 21 and 31 days with the average being 28 days.
Learn more about menstruation,here:
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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