Answer: 110 g/mol
Explanation:
First we need to find the molar mass of CaCl2 using the periodic table:
Ca: 40
Cl: 35 (Since Cl has a 2 at the end, multiply 35 by 2)
70+40= 110
Then multiply by amount of moles
110g×1.000mol = 110 g/mol
How much concentrated 15.54 M sulfuric acid is need to prepare 6.1 mL of a 2.28 M solution?
Answer:
0.895 mL
Explanation:
Using the formula;
C1V1 = C2V2
Where;
C1 = initial concentration (M)
C2 = final concentration (M)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in this question;
C1 = 15.54M
V1 = ?
C2 = 2.28M
V2 = 6.1 mL
Using C1V1 = C2V2
V1 = C2V2 ÷ C1
V1 = (2.28 × 6.1) ÷ 15.54
V1 = 13.908 ÷ 15.54
V1 = 0.895 mL
HELP
The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. What type of reaction does the diagram best represent? (5 points)
Exothermic reaction
Endothermic reaction
Reaction between two solids
Reaction between two liquids
Answer:
Exothermic reaction
Explanation:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise
Answer:
Endothermic
Explanation:
A bowling ball is let go from a height of 30 cm. What is the velocity of the
ball just before it hits the ground?
Select one:
о
0.30 m/s.
О
17 m/s.
O
24 m/s
a
1.3 m/s
Answer:
The answer is 0.30 m/s
Explanation:
i search it on
How many moles are in 8.0 gram sample of C3H4
Answer:
0.18 mol C₃H₈
Explanation:
to find the mole you have to convert the 8.0grams into moles.
8.0g C₃H₈ 1 mol C₃H₈
1 44.0g C₃H₈
*Pretend that those are a table*
I got 44.0g because Carbon is 12.0g you multiply that 3 times because it has a subscript of 3 and do the same for Hydrogen (1.0 x 8) then add those which would be 44.0g.
1 mol of C₃H₈ = 44.0g C₃H₈
now just mulitply and divide them.
8.0g x 1 = 8.0
1 x 44.0g = 44.0
8.0/44.0 = 0.18 mol C₃H₈
What are 3 kinds of moles
HELP QUICK Which of the following planets spins/rotates faster than earth?
A) Saturn
B) Jupiter
C) Venus
D) Mars
Answer:
B
Explanation:
Jupiter is the fastest spinning planet.
How many moles of oxygen are produced when 152 grams of water decomposes? 2H2O (1) --> 2H2(g) + O2(g) (balanced)
Answer:
76
Explanation:
I think 76 should be the correct answer because 152÷2=76
Name two metals which will not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
To solve such this we must know the concept of double displacement reaction. Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from dilute tetraoxosulphate(vi) acid.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.
Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
Learn more about the chemical reactions, here:
https://brainly.com/question/3461108
#SPJ2
If an organism ingests 950.0 g of glucose (C6H12O6) in its lifetime, how many grams of carbon dioxide (CO2) will be released? (molar mass C6H12O6 = 180.156 g/mol) (molar mass CO2 = 44.009 g/mol)
Answer:
1392. g CO2
Explanation:
I really need help with this chemistry assignment multiple choice
Answer:
b option to is correct and answer bro
Se disuelven 10 g de acido carbónico H2CO3 en 150 g de agua. Determina la concentración % m/m de esa disolución?
The question is: 10 g of carbonic acid H2CO3 are dissolved in 150 g of water. Determine the% m / m concentration of that solution?
Answer: The% m / m concentration of that solution is 6.66%.
Explanation:
Given: Mass of solute = 10 g
Mass of solvent = 150 g
Formula used to calculate the %m/m is as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100[/tex]
Substitute the values into above formula as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100\\= \frac{10 g}{150 g} \times 100\\= 6.66%[/tex]
Thus, we can conclude that the% m / m concentration of that solution is 6.66%.
Below is a chemical equation. Which of the following are identified by the blue arrows?
Captionless Image
atomic numbers
coefficients
products
subscripts
Males have glands called testes that release the hormone known as _______________. a estrogen b epinephrine c testosterone d toblerone
Answer:
testosterone is released from their testes!
a force of attraction between objects that is due to their masses and distance between objects
a. gravity
b. weight
c. mass
Answer:
the answer is gravity
hope this helps
Which biome has 4 distinct seasons?
A. Desert
B. Rainforest
C. Deciduous Forest
D. Tundra
C. Deciduous Forest
has 4 distinct seasons...
Answer: C. Deciduous Forest
Explanation:
I just searched it up.. and it's mostly where I live which has 4 distinct seasons.
A 32.9-mL sample of Ba(OH)2 is titrated with HCl. If 37.2 mL of 0.863 M HCl is needed to reach the endpoint, what is the concentration (M) of the Ba(OH)2 solution
Answer:
[tex]M_{base}=0.488M[/tex]
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to solve this problem by firstly writing the chemical reaction between hydrochloric acid and barium hydroxide:
[tex]2HCl+Ba(OH)_2\rightarrow BaCl_2+2H2_O[/tex]
It means there is 2:1 mole ratio of the acid to base, and we are able to write the following mole ratio, then written in terms of volumes and concentrations:
[tex]n_{acid}=2n_{base}[/tex]
Thus, we obtain the following:
[tex]M_{acid}V_{acid}=2M_{base}V_{base}[/tex]
Then, we solve for the concentration of the base and consequently plug in the given data to obtain:
[tex]M_{base}=\frac{M_{acid}V_{acid}}{2V_{base}} \\\\M_{base}=\frac{0.863M*37.2mL}{2*32.9mL}\\\\M_{base}=0.488M[/tex]
Regards!
What is a group of words called that contains elther a subject or a verb, but not both?
Answer:
Phrase
Explanation:
Phrases don't have both, but clauses do.
A supersaturated solution is said to contain
Explanation:
A solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature.
I hope it helps
Answer:
A supersaturated solution is said to contain more solute than it can dissolve at that given temperature.
How many grams equal 4.3 x 1024 atoms of oxygen (O2)?
Answer:
https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337
Explanation:
Substances formed as a result of a chemical reaction are calledImmersive Reader (1 Point) products reactants catalysts precipitates
Answer: substances formed as a result of chemical reaction are called PRODUCTS.
Explanation:
A chemical reaction can be defined as a reaction in which substances known as the REACTANTS makes or breaks it's bonds to form another substance usually referred to as the PRODUCT. Usually, a new substance which is referred to as the product that is formed is different from the original reacting substances. Some of the characteristics of a chemical reaction include:
--> colour change,
--> heat production,
--> precipitation
The rate at which these chemical reaction occurs depends on some factors such as pressure, temperature and concentration of the reactants
There are different examples of chemical reaction which includes:
--> Rusting of iron: this occurs when iron and oxygen combines to form a mixture of iron oxides, which is the product of the chemical reaction.
--> The burning of magnesium in air: in this Chemical reaction, magnesium reacts with oxygen to form magnesium oxide which is the product of the chemical reaction.
2Mg(s) + O2(g) △→ 2MgO(s)
--> Production of table salt: this is formed from the reaction of sodium and chloride to give sodium chloride as the product of the chemical reaction.
Therefore in a chemical reaction, no atom is destroyed or created but a new PRODUCT is formed from reactants.
why hydroxide an oxidation reaction??
Answer:
sorry I didn't know this one i did all the work and stuff and still couldn't get it sorry
WORTH 20 POINTS!! Need answer ASAP
Answer:
i cant see the image im good at chem if you can write it down in the comments ill answer it
Explanation:
he diagram shows a device that uses radio waves.
Two radio towers. The towers are equal distance apart with an arrow between them. The left tower is labeled X. The right tower is labeled Y. The arrow is pointing from Tower X to Tower Y.
What is the role of the part in the diagram labeled Y?
modulate, amplify, and send out waves
capture, amplify, and demodulate waves
change the amplitude and frequency of waves
change the pulse and phase of waves
Answer:
b
Explanation:
What is the relationship between
photosynthesis and respiration?
they are inverse processes
they both use oxygen to create energy
A. They are inverse processes
B. They both use oxygen to create energy
Answer:
A
Explanation:
In a chemical reaction, mass is conserved. This means that...
O A. The mass of the reactants stays the same during a chemical reaction
OB. The mass of the products stays the same during a chemical reaction
OC. The tpye and number of atoms in the reactants equals the type and number of atoms in the products
OD. The mass of the products is always twice the mass of the reactants
Answer: D
Explanation:
Help please!!!!!!!!!! Both questions!!!!
A student puts his signature with graphite pencil.
If the mass of carbon in the signature is 10-12g, calculate
the number of carbon atoms in the signature.
Answer:
If the mass of carbon in the signature is 10-12g, calculate. the number of carbon atoms in the signature. the answer is 5.01 x 10^10 atom.
Explanation:
wlcm
please mark me as brainliest
A baby chicken has feathers on its feet that are similar to that of its parents. Where are the instructions stored that provide information for a baby chicken’s feathery feet? A) In cytoplasm inside cells B) On genes within chromosomes C) On the cell membrane Eliminate D) In the mitochondria
Answer:
B) On genes within chromosomes
Explanation:
Answer:
B) On genes within chromosomes
When precipitation falls in summer, sometimes wind pushes it back up into freezing temperatures before falling again. What will most likely occur when this happens?
A.
hail will fall
B.
rain will fall
C.
sleet will fall
D.
snow will fall.
Answer:
A
Explanation:
hail will fall push it back up making it bigger comes back down
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)
Use the balanced chemical equation above to determine the number of moles of hydrogen gas that would be produced if 3.50 moles of solid magnesium reacted. please show all work and record your answer with proper units and significant figures.
Pls help
Answer:
2Mg + 4HCl (aq) --> 2 MgCl2 (aq) + H2
Explanation:
balanced...