Answer:
Monosaccharides, these are the simplest building block of carbs
Explanation:
it!
t
Calculate How old was the tree when it was
cut down?
Answer:
No numbers how are we supposed to know
Explanation:
why carbon is a basic thing to classify as organic and inorganic compounds?
Answer:
To answer, all living organisms contain carbon-based compounds, which classifies them organic.
Simply, carbon dioxide, is an example of an inorganic compound since it does not contain both carbon and hydrogen. Alternatively, one molecule of carbon dioxide contains one atom of carbon and two atoms of oxygen.
At 303 K, the volume of a gas is 30.0 ml. At constant pressure, what is the new
volume of the gas if the temperature is decreased to 283K?
Answer:
V₂ = 28 mL
Explanation:
Given data:
Initial temperature = 303 K
Initial volume = 30.0 mL
Final temperature = 283 K
Final volume = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 30.0 mL × 283 K /303 K
V₂ = 8490 mL.K / 303 K
V₂ = 28 mL
This is due tomorrow so please help! : name a product where viscosity is important its creation or use explain why it is important
What is a non-example of a nucleus? Please give me a non-living thing.
Answer:
They are prokaryotes and both have tough cell walls. ◦ The cytoplasm contains ribosomes, but no organelles. ◦ There is no nucleus for organisms in this category.
Explanation:
Answer:
rock- non living
( Prokaryotes don't have a nucleus)
Explanation:
What igneous rock is non-vesicular and glassy in texture and has a mafic composition?
Answer:
igneous rock
Explanation:
Easy Chemistry/ Help
If a substance has a PH of 7 is it a acid, base or a neutral.
Answer:
Neutral
Explanation:
A pH below 7 is acidic and a pH above 7 is basic, and a pH of 7 is neutral.
A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.3 0 Calculate the initial temperature of copper (Cs = 0.385 J/g 0C for copper, and 4.18 J/g 0C for water).
Answer:
The initial temperature of the metal is 84.149 °C.
Explanation:
The heat lost by the metal will be equivalent to the heat gain by the water.
- (msΔT)metal = (msΔT)water
-32.5 grams × 0.365 J/g°C × ΔT = 105.3 grams × 4.18 J/g °C × (17.3 -15.4)°C
-ΔT = 836.29/12.51 °C
-ΔT = 66.89 °C
-(T final - T initial) = 66.89 °C
T initial = 66.89 °C + T final
T initial = 66.89 °C + 17.3 °C
T initial = 84.149 °C.
Relate pH values of 9.1, 1.2, and 5.7 to hydronium and hydroxyl ion concentration.
Answer:
9.1 = basic 1.2= very acidic 5.7= acidic
Explanation:
12.
Contrast and compare:
a) ionic and covalent bonding
Answer:
Ionic bonds - an intramolecular force exist in a nonmetal and metal compounds such as NaCl. The Na donate 1 electon to Cl to complete its octet rule.
Covalent bond - an intramolecular force exist in a nonmetal and nonmetal compounds such as bonds O2, Cl2, CO2, sugar, proteins and most of organic compounds and biomolecules by sharing electrons to bond.
There are two types of covalent bonds: polar and nonpolar. Polar bond is a bond between two different nonmetal atoms of different electronegativities. While nonpolar bond is a bond between the same atom or two differenct atoms of the same electronegativities (if there is). Their electronegativities pull will cancel so that their overall polarity is zero.
Help plz:))) I’ll mark u brainliest
ASAP!!!
Answer:
rank from lower to higher electronegativity
16)Li
C
N
17)Ne
C
O
18)Si
P
O
19)K
Mg
P
20)He
S
F
How can air quality be fine on one day and hazardous on the next? What
are some things that can cause a rapid change in air quality? *
Answer:
Air Current
Explanation:
Say I am in California and there is a massive fire next to me but not close enough to me to really see the fire and the next day I see no fire but theres a ton of ash in the sky, this can be due to the wind current taking the smoke from the fire into my direction and that smoke falling in my area. So basically a wind current can take the smoke from a fire into another destination and cause a rapid change in air quality in a day.
Two individual atoms of the same element are slightly different. One has one more proton than it has electrons. The other has one more electron than it has protons. These atoms are both
ions
isotopes
freons
xenons
phlogistons
Answer:
ions
Explanation:
Individual atoms of the same element but having slightly different number of protons and electrons are called ions.
Ion is a charged particle.
An atom is made up of three fundamental subatomic particles. Protons are the positively charged particles Electrons are the negatively charged particles Neutrons do not carry any charges.When the number of protons > electrons the body is positively charged.
When the number of electrons > protons the body is negatively charged.
Charged particles are called ions.
when is the energy source used to fuel photosynthesis
Answer:
Photosynthesis, process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. In so doing, photosynthesis provides the basic energy source for virtually all organisms.
Explanation:
Which chemical equation is balanced?
A. CaO2 + HCl → CaCl2 + H20
B. CO2 + H2O + H2CO2
C. K+ H2O → K20 + H2
D. MgO + 2HCI – MgCl2 + H20
10 points if you answer fast
D. MgO + 2HCI – MgCl2 + H20
Further explanationThe chemical equation is said to be balanced if the number of atoms in the reactants is equal to the number of atoms in the product
A. CaO2 + HCl → CaCl2 + H20
atoms O, Cl and H are not the same
B. CO2 + H2O + H2CO2
atoms O are not the same
C. K+ H2O → K20 + H2
atoms K are not the same
D. MgO + 2HCI – MgCl2 + H20
Mg, left = 1, right=1
O, left=1, right=1
H, left=2, right=2
Cl, left=2, right=2
Chemical equation is balanced
Answer:
B. CO2 + H2O + H2CO2
Explanation:
Sounds with small amount of energy______distances than sounds with more energy
A.Shorter
B. Longer
C.same
D. Medium
How many moles are there in a 122 gram sample of nickel (Ni)?
7.16 x 103 moles
6.22 mol
2.08 mol
0.481 mol
The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.
Nickel:
The atomic number of nickel is 28.The symbol of nickel is Ni.Density of a nickel 8.908 g/cm3.It is a d block element.It belongs to group 10 and period 4.It is also called transition metal.It is a metal and is located between groups 2 and 3.Mass of nickel given: 122 grams.
Atomic mass of nickel: 58.71 g mol
Number of moles = Mass / molar mass
= 122/ 58.71
= 2.078
= 2.08 moles.
The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.
To learn more about nickel, refer to the link:
https://brainly.com/question/3542561
#SPJ2
HELP!!!
i will mark brainliest
Answer:
Blank #1: noble gas
Blank #2: bonding
Blank #3: octet rule
Blank #4: share
Blank #5: filled
Blank #6: halogen
Please give me brianliest!!
Can someone help? Ill give brainliest!
Directions: count each side of the reaction. Circle yes or no if it follows the law of conservation of mass
Answer:
Yes, it becomes 2 of H20 which is water
Which of the following is true about waves?
A.
They are always visible.
B.
They always move matter.
C.
They carry energy.
D.
They can only travel though outer space.
Answer:
c. they carry energy is the answer
Answer:
C. they carry energy
Explanation:
Energy can be carried from one place to another by waves, including water, light, and sound waves. Waves are oscillating disturbances that travel through but do not move matter.
Infrared radiation escaping from hot coals is an example of invisible waves carrying energy. This energy can be felt as heat.
someone help me please i’ll give brainly
Answer:
D) All of the above
Explanation:
When the temperature of an object increases, the average kinetic energy and speed of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object also increases as its temperature increases.
When was Quartz found and how is it extracted??
Answer:
Quartz was discovered in 1880 and they use buldozers and backhoes (to remove dust/dirt around it) and rarely explosives.
Explanation:
Plants make their own food and are not required to consume food for energy. Into which category does this characteristic cause plants to be assigned?
Answer:
Autotrophic or Producers
Explanation:
They are often called producers because they make their own food.
How did the substance oxygen change the world??
Answer: The atmosphere of Earth wasn't always full of oxygen. ... An accidental mutation would some day change the world forever as these organisms would become able to feed off of the sunlight around them, and produce oxygen in a process known as photosynthesis. This oxygen, which none of these organisms could use, was toxic.
Which is more electrically negative? 1)C 2)P or 3)S
GUYS PLEASE HELP!!! :((
Answer:
3 sulphur is more electrically –
How many liters of ammonia are formed with 49.8 g of nitrogen gas reacting with 10.7 g of hydrogen gas at S.T.P.?
What is the mass 5.00 x 1022 molecules of PbCI2
Answer:
ion know this one
Explanation:
A bus travels a distance 150km
in 5 hours where as another bus travel 200km in
6 hours which bus travel fast
Answer: The bus traveling 200km in 6 hours is traveling the fastest.
Explanation:
Bus 1
150km/5hrs
Simplify -> 30km/hr
Bus 2
200km/6hrs
Simplify -> About 33.333km/hr
3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of matter. Which of these choices is a physical property?
A.) height
B.) flammability
C.) ability to rust
D.) reaction with water
Answer:
D
Explanation:
It would be D because you are observing the reaction and don’t change anything