Answer:
0.25 moles
Explanation:
To find number of moles in 11 g of CO2
44 g of CO2 =1 MOLE
1GM of CO2 = 1/44 mole
11 gm of CO2 = 1/44x11
=11/44 mole
= 0.25 mole
HOPE IT HELPS U
In the ocean, there are small fish that live in and around the mouths of large sharks. The shark does not harm the fish because the fish pick food from between the shark’s teeth. In return, the small fish benefit from food the sharks find. Which form of symbiosis exists between the sharks and the small fish?
commensalism
mutualism
parasitism
predation
please help
Answer:
Mutualism
Explanation:
i don’t think i know
The genotype RR would be considered a purebred and the genotype Rr would be considered a hybrid. *
True or False
Answer:
true
Explanation:
What's the name of the part of cells that sense molecules and other cells?
6.
This part of Earth's atmosphere blocks the sun's harmful rays.
Ozone layer
Stratosphere
Mesosphere
Troposphere
Answer: THE ANSWER IS OZONE WEEEE a layer in the earth's stratosphere at an altitude of about 6.2 miles (10 km) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
Explanation:
Answer: The answer is The Ozone layer
6. In photosynthesis, plants use carbon dioxide and water to
produce oxygen and glucose. How many grams of water are
needed to produce 75 grams of glucose?
6 CO2 + 6 H2O → C6H12O6 + 6 O2
a. 45grams
b. 90grams
c. 108 grams
d. 180grams
PLS HELPPPPP ASAP
How many grams of Oxygen are in 7.2 grams of C12H22011? Round your answer to the hundredth place (0.01)
describe the behavior of the molecules in a liquid. Explain this behavior in terms of intermolecular forces.
The term “INTERmolecular forces” is used to describe the forces of attraction between atoms, molecules, and ions when they are placed close to each other.
In liquids, particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.
In a liquid, intermolecular attractive forces hold the molecules in contact, although they still have sufficient KE to move past each other. Intermolecular attractive forces, collectively referred to as van der Waals forces, are responsible for the behaviour of liquids and solids and are electrostatic in nature.
Learn more about intermolecular forces here:
https://brainly.com/question/2159430?referrer=searchResults
#SPJ2
Which region contains elements with five valence electrons ?
Answer:Group 5A or 15
Explanation:
What is the oxidation state of CI in CIO-
-1
+2
+1
0
Answer:
+1
Explanation:
Analysis determined a compound contained 92.25% carbon and 7.75% Hydrogen. Determine the
empirical formula for this compound
Answer:
Styrene has the empirical formula CH, and there is 92.25% carbon and 7.75% hydrogen. The percentage of these parts can be used to determine the molar mass and use the molecular formula.
Explanation:
PLEASE HELP ASAP I'LL MARK BRAINLIEST
Thank you :)
8. A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013.
Does this statement describe the meteor’s speed or velocity? 1pt
9. Why did you choose the answer above (explain why)? 1pt
Answer:
Its velocity was 7.8 km/s northward.
Explanation:
Because the meteor was only 45 m wide and was 27,700 km above Earth's surface it was not visible with the aid of a telescope.
What is the formula for tricarbon heptafluoride?
C2F3
CF7
C3F7
C773
Answer:
C3F7
'Tri' means 3
Tricarbon means 3 carbon
"Hepta" means 7
Fluoridez molecular formula is "F"
hence F7
I need help answers these questions, I don’t know what the question is asking.
Answer:
just look at the subscripts, the tiny numbers. in C4H4O4 , there are 4 C molecules, 4 H, and 4 O
Explanation:
hope this helps. good luck
1. Why do scientists study fossils? *
(25 Points)
O a to learn how the planet was formed
O b. to study how organisms changed over time
O c. to observe how drought affected the landscape
O d. to understand how weathering affect rock layers
Jenny read that most of Earth’s water is salt water, while only 3% is fresh water. She also read that not all of the fresh water is accessible. Most of Earth’s fresh water is tied up in which two areas?
A. glaciers and underground
B. ice and glaciers
C. underground and lakes
D. glaciers and lakes
Answer:
B. ice and glaciers
Explanation:
The majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers.
Kaitlyn said that the metal sodium Na and the non metal neon Ne form the ionic compound NaNe. Using what you know about groups and valence electrons, explain why you support or do not support kaitlyns statement
There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, Kaitlyn statement is incorrect.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Ionic bond is formed by cation and anion. Na is a metals and act as cation as Na⁺. Neon is a non metal but it can not gain or loose electrons as its outermost shell is fully filled. Neon is a noble gas which is unreactive. So, Kaitlyn statement is not correct. . Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.
Therefore, Kaitlyn statement is incorrect.
To learn more about chemical compound, here:
https://brainly.com/question/26487468
#SPJ5
Which detail supports the main idea Bats are useful to humans?
Bats often live in large colonies in caves and under bridges.
Bats are the only mammal that truly flies.
Bats eat hundreds of mosquitoes and other annoying insects at night.
Some bats carry rabies, a deadly virus.
Answer:
Bats eat hundreds of mosquitoes and other annoying insects at night.
hi please help, i will give 100 points
Explanation:
Boiling water:water heats up and bubbles physical change
Baking a cake: starts to cook into bread chemical change
Burning wood: turns into ash and burned wood chemical change
Painting a door: door changes color physical change
Answer:
water is yummy
Explanation:
A 32.14 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 17.51 grams of the dehydrated compound remained. What is the formula of the hydrate?
Answer:
MnSO₄.7H₂O
Explanation:
To solve this question, we need to convert the mass of the dehydrated MnSO₄. The difference between mass of the hydrate and dehydrated compound is the mass of water. With the mass we can find the moles of water and the formula of the hydrate:
Moles MnSO₄ -Molar mass: 151g/mol-:
17.51g * (1mol / 151g) = 0.116 moles
Moles H₂O -Molar mass: 18g/mol-:
32.14g-17.51g = 14.63g * (1mol / 18g) = 0.813 moles
The ratio of moles MnSO₄: Moles H₂O represent the amount of water molecules in the hydrate:
0.813mol / 0.116mol = 7 molecules of water.
The hydrate formula is:
MnSO₄.7H₂OWhat is the symbol of element Californium?
Answer:
Californium is a chemical element which is radioactive, its symbol is 'Cf' and atomic number is 98
Answer: the elementale symble is Cf
Explanation: the symble of element is Cf
Which statement correctly describes acetyl-CoA?
It connects glycolysis to the citric acid cycle.
It connects the citric acid cycle to the electron transport chain.
It is the product of catabolism of proteins.
It is the product of catabolism of fats.
A. It connects glycolysis to the citric acid cycle.
Explanation: Right on edge
Help ASAP I will mark brainliest for the correct answer !!!⚡️⚡️⚡️
Answer:
A) 0.5h
Explanation:
Using the formula,
speed=[tex]\frac{distance}{time}[/tex]
Substituting given values
1224=612/time
time=0.5h
The photo shows a person holding a frozen smoothie. Which statement best explains why the smoothie is melting?
Answer:
c
Explanation:
the temperature of the person's hand is hight than the temperature of the smoothie
Answer:
c
Explanation:
the temperature of the person's hand is hight than the temperature of the smoothie
Gold(III) forms an ionic compound with fluoride. How many atoms of each ion will bond to form an ionic compound?
Question 23 options:
1 gold(III), 1 fluoride
1 gold(III), 3 fluoride
2 gold(III), 3 fluoride
3 gold(III), 1 fluoride
Answer:
1 gold(III), 3 fluoride
Explanation:
What is the percent composition by mass of suifur in Na2SO?
(Molar mass of Na2SO.= 142 g/mol)
Answer:
22.5%
Explanation
% composition = Molar mass of S
------------------------ x 100
Molar mass of Na2SO4
= 32.065
------------ x 100
142
=0.225 x 100
= 22.5%
Determine the products of the following reaction:
Ca(OH)2 (aq) + 2 CuCl(aq) →
(aq) +
H(s)
:: Caci
:: CaCl2
+ CuOH
:: Cu(OH)2
*: CIOH
:: Cacu
How many atoms of tin are found in 3.50 moles of tin?
Answer:
2.11x10²⁴ atoms
(e)
Calculate the mass of one atom of sodium.
Use the equation:
relative atomic mass
mass of one atom of sodium =
Avogadro constant
Avogadro constant = 6.02 x 1023
Give your answer to 2 significant figures
Answer:
3.82 × 10 ^-23 g
Explanation:
6.02 x 10^23atoms = 1 mole of sodium
1 atom = 1/(6.02 x 10^23) mole
mass = mole × molar mass
= 1/(6.02 x 10^23) × 23
= 3.82 × 10 ^-23 g
Most halogens form compounds by
(1 Point)
gaining an electron to form a negative ion.
losing an electron to form a positive ion.
losing protons.
joining with both calcium and carbon.
help me with this asap rocky pleasee
Answer:
b
Explanation: