Answers
Answer:
0.219 g/mL.
Explanation:
From the question given above, the following data were obtained:
Mass = 25 g
Volume = 114 mL
Density =.....?
Density of a substance is simply defined as the mass of the substance per unit volume of the substance. Mathematically, it is expressed as:
Density = mass /volume
With the above formula, we can obtain the density of the substance given in the question above as follow:
Mass = 25 g
Volume = 114 mL
Density =.....?
Density = mass /volume
Density = 25/114
Density = 0.219 g/mL
Therefore, the density of the substance is 0.219 g/mL
Related Questions
X-ray crystallography is used to see the structure of molecules. Scientists have used this technique to find the structure of cholesterol, an important biological molecule.
Knowledge of the structure of cholesterol is helpful because it may affect
A. how cholesterol works in the body.
B. the amount of cholesterol that is considered healthy.
C. previous ideas about which foods contain cholesterol.
D. previous explanations of how cholesterol works in the body.
Answers
Answer:
A. how cholesterol works in the body.
Explanation:
If we know the precise structure of a molecule (by X-ray crystallography), we can understand more about how it interacts with cells, proteins, and other molecules. It can also tell us what reactions it might take part in.
Therefore, we can learn more about how it works in the body and what activities it takes part in in the cells of the body.
Answer:
A
Explanation:
nuityyy
The basis of the VSEPR model of molecular bonding is __________. Question 1 options: atomic orbitals of the bonding atoms must overlap for a bond to form regions of electron density in the valence shell of an atom will arrange themselves so as to maximize overlap electron domains in the valence shell of an atom will arrange themselves so as to minimize repulsions regions of electron density on an atom will organize themselves so as to maximize s-character Question 2 (1 point)
Answers
Answer:
Electron domains in the valence shell of an atom will arrange themselves so as to minimize repulsions
Explanation:
In accordance with VSEPR theory, the electron domains or electron pairs on the valence shell of the central atom in a molecule always position themselves as far apart in space as possible in order to minimize repulsions.
Recall that according to VSEPR theory, the shape of a molecule depends on the number of electron pairs or electron domains on the valence shell of the central atom of the molecule, both lone pairs and bond pairs. Lone pairs are known to cause more repulsions than bond pairs.
Identify each of the pictures as heterogeneous or homogeneous
Answers
Answer : The image C shows homogeneous mixture and image A, B and D shows heterogeneous mixture.
Explanation :
Heterogeneous mixtures : It is a mixture in which the constituent substances are not mixed well and do not have a uniform composition throughout the mixture that means appears non-uniformly throughout the solution.
Homogeneous mixtures : It is a mixture in which the constituent substances are mixed well and have a uniform composition throughout the mixture that means appears uniformly throughout the solution.
From the given image we conclude that the,
image C shows homogeneous mixture and image A, B and D shows heterogeneous mixture.
What happens when water turn’s into gas
Answers
Answer:
The process of turning water into gas is called evaporation. When water is heated, it changes state from a liquid to a solid. No mass is destroyed during the process, but rather, it is converted into gas.
Explanation:
Brainliest Plzzz!!!
At STP, a 50.-gram sample of H2O() and a100.-gram sample of H2O() have
Answers
Answer:
2
Explanation:
because it same volume
the male and female sex cells combine to form a
Answers
Answer:
zygote
Explanation:
In human beings, each gamete contains 23 chromosomes, half the number found in the other cells of the body. When the male and female gametes fuse, they become a zygote containing the full 46 chromosomes, half of which came from the father and half from the mother.
Answer:
zygote
Explanation:
In human beings, each gamete contains 23 chromosomes, half the number found in the other cells of the body. When the male and female gametes fuse, they become a zygote containing the full 46 chromosomes, half of which came from the father and half from the mother.
Suppose the quantum number rule for the angular momentum quantum number, I was
l = 0,1,2,...,l
Instead of
l = 0,1,2,...,l-1
Drag the text components into the boxes to create the Ar electron configuration for the new rule.
Answers
Explanation:
Hi sis
Please mark me brainliest and thank me and rate me.
Which science is the study of living organisms? physics astronomy chemistry biology
Answers
Answer:
biology
Explanation:
biology is the study of living g things
Answer:
The answer you would be looking for is Biology
what is an isotope
Answers
7. A scientist is trying to determine the identity of an element. It is highly reactive in water
and forms an ionic bond with chlorine. It is also very shiny. The element is likely
(1 point)
from Group 17.
from Group 1.
from Group 15.
a noble gas.
Answers
GIVING BRAINLIEST I NEED ANSWER IN LESS THAN 5 mins!
Is this a scientific model? Use complete sentences to explain why or why not.
Answers
Answer:
its a scientific model
Explanation:
It is a scientific model because it is showing the water cycle. In the water cycle it is scientifically showing how water circulates through the Earth. For example, the water in the ocean evaporates which is evaporation, then it condensates into a cloud that then becomes condensation and the condensation makes precipitation when it rains. When it falls to the ground, it then becomes a runoff down a hill.
PLZ HELP PLZ HELP HURRY 40 POINTS NO WRONG ANSWERS PLZ
Answers
What is the mass of protons neutrons and electrons PLZ HURRY
Answers
Answer:
Mass of proton neutron and electron
Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.
Explanation:
Hope this helps :)
SOMEONE ANSWER NOW
Which statement best explains why light can travel with or without a medium?
A medium is necessary for light waves to travel.
Light waves cannot travel in a vacuum.
Light waves are longitudinal waves that do not require a medium to travel.
Transverse waves do not require a medium to travel.
Answers
Explanation:
its light waves cannot travel through vaccum
hope it helps
Answer:
Transverse waves do not require a medium to travel.
Explanation:
2.54 mL of ethanol to mol ethanol (Hint: the density of ethanol is 0.789
g/mL.)
Answers
0.04350179862
Explanation:
Make sure to check for sig figs though. Basically, you have 2.54 mL and you multiply that by the 0.789 g/mL and mL cancels out and you are left with 2.00406g. There are 46.06844 grams per mol of ethanol, so to cancel out grams we multiply by 1/46.06844. And then we are left with 0.04350179862 mol
What are colliding when plateaus and mountains ranges are formed
Answers
Answer:
mountain ranges form when pieces of Earth's crust—called plates—smash against each other in a process called plate tectonics, and buckle up like the hood of a car in a head-on collision.
Hope that answers your question.
what isotope has a mass number of 18 and an atomic number of 7
Answers
Answer:
nitrogen 18
nitrogen has an atomic number of 7
The area surrounding the nucleus is called: protons electrons neutrons electron cloud
Answers
Answer:
eletrons
Explanation:
eletrons is not in the neuclus its around it
Answer:
electrons can be found around the nucleus in an electron cloud.
Explanation:
The element with 6 valence electrons and 3 energy level is
Answers
Answer:
sulfur
Explanation:
what feature has disneyland's management added to lengthen the visitor's stay
Answers
Answer:
where are the options?
Explanation:
An unknown compound containing tellurium and bromine is analyzed
and it is determined that 28.53% of the compound by mass is
composed of tellurium.
How many moles of Te are present in 100.00 g of the compound?
Answers
Answer:
The correct answer is 0.22 mol Te.
Explanation:
First, we have to calculate the mass of Te in the sample. We simply multiply the sample mass by the percentage of Te (28.53%= 28.53/100)
100.00 g x 28.53/100 = 28.53 g Te
The molar mass of Te is 127.60 g. Thus, the mass of 1 mol of Te is 127.60 g. With this, we calculate how many moles of Te there are in 28.53 g of Te:
28.53 g Te x 1 mol Te/127.60 g Te= 0.223 mol ≅ 0.22 mol
Write balanced net ionic equations for the reactions, if any, that occur between
(a.) Fe2S3 (s) and HBr (aq)
(b.) K2CO3 (aq) and Cu(NO3)2 (aq)
(c.) Fe(NO3)2 (aq) and HCl (aq)
(d.) Bi(OH)3 and HNO3 (aq)
Answers
Answer:
a) Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺
b) Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)
c) No reaction
d) Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O
Explanation:
a) This is a double displacement reaction between solid iron(iii) sulphide and hydrobromic acid to produce hydrogen sulphide gas. The full and net equations of the reaction are given below:
Fe₂S₃(s) + 6HBr(aq) ---> 2FeBr₃ + 3H₂S(g)
Net ionic equation: Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺
b) This is a double displacement reaction between potassium carbonate and copper (ii) nitrate to produce insoluble copper (ii) carbonate. The full and net equations of the reaction are given below:
K₂CO₃(aq) + Cu(NO₃)₂(aq) ---> KNO₃(aq) + CuCO₃(s)
Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)
c) No reaction as no precipitate is formed
d) This is a neutralization reaction between bismuth (iii) hydroxide and trioxonitrate (v) acid to produce sat and water. The full and net equations of the reaction are given below:
Bi(OH)₃(s) + 3HNO₃(aq) ---> Bi(NO₃)₃(aq) + 3H₂O(l)
Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O
What two particles are found in the nucleus of an atom?
Answers
Answer: it has one proton and electron
Explanation:
If the number of equally likely sample outcomes of a single ASAP! stage of an experiment is 4, what is the total number of elements in the sample
space if the experiment has 3 stages?
OA. 16
OB. 12
OC. 64
OD. 81
Answers
Answer:
C. 64
Explanation:
Given:
The number of equally likely sample outcomes of a single stage = 4
Unknown:
Total number of elements if there are three stages= ?
Solution;
Probability is the likelihood of an event to occur.
In this problem;
For a single stage, the likely outcome is 4
So therefore;
For the 3 stages 4 x 4 x 4 = 64
Therefore, the total number of elements in the sample space of an experiment with 3 stages is 64
Are you a fire alarm? Cause you're loud and annoying
Answers
Answer:
yaaaaa babdbabaaaa lolll
Explanation:
The molar mass of SO3 is grams.
Answers
Answer:
80.07 g/mol
Explanation:
Step 1: Define
Molar Mass S - 32.07 g/mol
Molar Mass O - 16.00 g/mol
Step 2: Find molar mass of compound
S = S × 1 = 32.07 g/mol
O₃ = O × 3 = 48.00 g/mol
32.07 + 48.00 = 80.07 g/mol
Answer:
80.06 grams
Explanation:
Edmentum!!
14)
A Kelvin temperature equivalent to 25°C is:
A)
-248K
B)
25K
C)
248K
D)
298K
Answers
Answer:
25°C + 273.15 = 298.15K , so D.) is the Answer
Explanation:
who said
"there are electrons dispersed evenly within a large area of positive material"
A. Rutherford
B. Schrodinger
C. Bohr
D. Thomas
Answers
Awnser: The awnser would be (D) Thomas
Explanation:
Use Quizlet
write the unit of electric charge
Answers
Answer: the electric charge is the atomic number
HELPPPPPPPPP
50. How many joules of heat must be absorbed by 0.375 kg of water to raise its temperature by 45.0 to 70.0°C. Specific heat of water is 4.184 J/gC or 1.0 cal/gC
51. What mass of water can be heated from 25.0 to 50.0°C by the adding of 2825 Joules?(Cp of H2O=4.184 J/g °C)
Answers
Answer:
50. 54,915 J
51. 27.0 g
Explanation:
The dimensional analysis tells you how to compute these. Multiplying specific heat, J/(g·°C), by the product of mass and temperature change will give you energy.
__
50. (375 g)((70 -45) °C)(4.184 J/(g·°C)) = 54,915 J
__
51. M((50 -25)°C)(4.184 J/(g·°C)) = 2825 J
M = 2825/104.6 g ≈ 27.0 g