Answer:
has a highly ordered microscopic structure
Describe your observations of how the waves are behaving in the photograph.
Answer:
The waves are behaving this way due to the simultaneous water drops landing in the water.
Explanation:
because ima smart baddie (≧▽≦)
in which type of condition is a conditions is a landslide most likely to occur
Answer:
B. In a wet, hilly area
Explanation:
We know that for a landslide to happen, there has to be a down hill slope so it can fall.
This eliminates answers C, D and E.
So we are left with A and B
Now we can look at this in a real life scenario. If you have ever walking on wet ground, you will know that is weaker than dry ground. Knowing this, we know the answer will have to be answer B.
What is the amount of moles of NaOH, if the solution molarity is .33 M NaOH in 0.75 L solution
Answer:
The amount of moles of NaOH is 0.0495
Explanation:
Molarity is a measure of concentration that is defined as the number of moles of solute that are dissolved in a given volume.
In symbolic form molarity is presented as:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case:
Molarity= 0.33 MNumber of moles of solute= ?Volume= 0.75 LReplacing in the definition of molarity:
[tex]0.33 M=\frac{number of moles of solute}{0.75 L}[/tex]
number of moles of solute= 0.33 M* 0.75 L
number of moles of solute= 0.0495 moles
The amount of moles of NaOH is 0.0495
Answer:
0.248 moles of NaOH
Explanation:
Concept of Molarity is mol/L
[x] = 1 M
1 mol of x contained in 1 L of solution. We write molar concentrations between []
M = mol/L then M . L = mol
Our solution is NaOH
0.33 M . 0.75L = mol
This solution contains 0.248 moles of NaOH
How many calories of heat were added to 167.9 g of water to raise its temperature from 25oC to 55oC?
Answer:
Q = 5036.9 calories
Explanation:
Given that,
Mass, m = 167.9 g
The temperature raises from 25°C to 55°C.
The specific heat of water,c = 4.184 J/g °C
We need to find the heat added to water. We know that,
[tex]Q=mc\Delta T\\\\=167.9 \times 4.184\times (55-25)\\\\=21074.8\ J[/tex]
or
Q = 5036.9 calories
So, 5036.9 calories of heat is added.
PLEASE HELP!! ASAP WILL GIVE BRAILIST (please explain how you got there or show a picture of work)
a) Write the word equation for the reaction of silver chlorate reacts with sodium phosphate to produce silver phosphate and sodium chlorate.
b) Write the balanced formula equation for this reaction.
c) If 287 g of silver chlorate reacts with 52.8 g of sodium phosphate, what is the maximum number of grams mass of silver phosphate will be produced?
d) Identify which reactant is the limiting reactant and which is the excess reactant.
e) How many grams of the excess reactant reacts and how many grams are left over?
Answer:
See Explanation
Explanation:
a) The word equation is;
silver chlorate + sodium phosphate ------> silver phosphate + sodium chlorate
b) The balanced reaction equation of the reaction is;
3AgClO3(aq) + Na3PO4(aq) ------->Ag3PO4(s) + 3NaClO3(aq)
c) amount of silver chlorate reacted = 287 g/191.319 g/mol = 1.5 moles
3 moles of silver chlorate yields 1 mole of silver phosphate
1.5 moles of silver chlorate yields 1.5 * 1/3 = 0.5 moles of silver phosphate
Amount of sodium phosphate reacted = 52.8 g/163.94 g/mol = 0.3 moles
1 mole of sodium phosphate yields 1 mole of silver phosphate
0.3 moles of sodium phosphate yields 0.3 moles of silver phosphate.
Hence the maximum number of grams mass of silver phosphate produced = 0.3 moles * 418.58 g/mol = 125.6 g
d) The excess reactant is silver chlorate while the limiting reactant is sodium phosphate
e) 3 moles of silver chlorate reacts with 1 mole of sodium phosphate
x moles of silver chlorate reacts with 0.3 moles of sodium phosphate
x = 3 * 0.3 = 0.9 moles of silver chlorate reacted
Mass of 0.9 moles of silver chlorate = 0.9 moles * 191.319 g/mol = 172 g of silver chlorate
Hence mass of silver chlorate left over = 287 g - 172 g = 115 g
The atomic model that describes an atom as a spherical object containing a certain number of electrons trapped in a mass of positive charge is often called the ___________ model.
help
you have a coin with a volume of 10cm3 and a mass of 23g. What is the density of the coin
Answer:
2.3 grams per cubic cm
Explanation:
Density is equal to mass over volume, so
23/10=2.3
1. Make a claim that answers the following question: "What is the
connection between the number of valence electrons and
chemical/physical properties?" *
Lets take an example to explain this
Sodium(Na) has 1 electron in its outer or valence shell hence it will lose it and become a cation say to Chlorine(Cl)
To form Sodium Chloride.
Since it is capable of losing electrons, Sodium becoems a metal and has properties of metal
Whereas Chlorine which has 7 electrons in its valence shell gains an electrons to become an anion
Hence it is a non metal
And has the properties of an anion
Who are the scientists that contributed in arranging of the periodic table?
Which type of star has the greatest temperature on the HR diagram? Question 7 options: Red Supergiants Main Sequence White Dwarfs Red Giants
Answer:
Red supergiant
Explanation:
Their core is the hottest.
plz mark me as brainliest.
2.5 liters of gas is stored at a pressure of 100 atm, if the volume were increased to 4 liters, what would be the new pressure?
a. 250 atm
b. 1000 atm
c. 62.5 atm
d. 160 atm
Answer:
62. 5
Explanation:
Use P1V1=P2V2
100 × 2.5 =250 /4=62.5
identify the state of matter in the box,
Answer:
gas
Explanation:
particles are very far apart
The given diagram represents gaseous state of matter. Both a volume and a definite form are absent from a gas. The separation of gas particles is great.
What is state of matter?Solids, liquids, gases, plus plasma are the four states of matter that may be found in daily life. However, a number of additional states of matter have indeed been found.
Some of these additional states are created when a material transitions among two states of matter and doesn't actually exhibit the characteristics of either state. The most exotic are others. Both a volume and a definite form are absent from a gas. The separation of gas particles is great. The gas in a balloon and the air are two examples of gases. The given diagram represents gaseous state of matter.
Therefore, the given diagram represents gaseous state of matter.
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Given the following data set, calculate the unknown quantity.
P= 1.23 mmHg atm, V=? kL, n= .773 mol, T= 152 °C
Answer:
V ≈ 16,662.63 L
Explanation:
The data given in the question includes;
The pressure in the medium, P = 1.23 mmHg
The number of moles of the substance present in the medium, n = 0.773 mol
The temperature of the substance in the medium, T = 152 °C = 425.15 K
The unknown quantity, V = The volume filled by the substance
The ideal gas law equation that can be used to find the unknown volume is given here as follows;
P × V = n × R × T
Where;
R = The Universal Gas Constant = 62.363 mmHg·L·mol⁻¹·K⁻¹
From the ideal gas law equation, we get;
V = n × R × T/P
Plugging in the values, gives;
V = 0.773 mol × 62.363 mmHg·L·mol⁻¹·K⁻¹ × 425.15 K/(1.23 mmHg) = 16,662.6305405 L
The volume occupied, which is the unknown quantity, V ≈ 16,662.63 L.
Hi can anyone help me ?
Answer:
its 4
Explanation:
At 35.0°C and 3.00 atm pressure, a gas has a volume of 1.40 L. What pressure does the gas have at 0.00°C and a volume of 0.950 L? Which equation should you use? P subscript 2 equals StartFraction P subscript 1 V subscript 1 T subscript 2 over T subscript 1 V subscript 2 EndFraction. P subscript 2 equals StartFraction T subscript 1 V subscript 2 over P subscript 1 V subscript 1 T subscript 2 EndFraction. P subscript 2 StartFraction equals V subscript 1 V subscript 2 over T subscript 1 T subscript 2 EndFraction P subscript 1.
Answer:
a
3.92
Explanation:
Which might cause someone to be exempt from soccer practice? *
a. an injury
b. a previous absence
Answer:
injury
Explanation:
because get hurt we can say injury
1. The respiratory system depends on the nervous system for signals to:
Answer:transfer oxygen through your blood
Explanation:
Answer:
coordinate the muscles that control breathing
hope this helps ⭐
A child has a toy balloon with a volume of 1.75 liters. The temperature of the
balloon when it was filled was 21° C and the pressure was 1.00 atm. If the child
were to let go of the balloon and it rose 3 kilometers into the sky where the
pressure is 0.65 atm and the temperature is -10°C, what would the new volume
of the balloon be?
Answer:
2.41 Litres
Explanation:
Using the combined gas law equation as follows;
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question;
P1 = 1 atm
P2 = 0.65 atm
V1 = 1.75 liters
V2 = ?
T1 = 21°C = 21 + 273 = 294 K
T2 = -10°C = -10 + 273 = 263 K
Using P1V1/T1 = P2V2/T2
1 × 1.75/294 = 0.65 × V2/263
1.75/294 = 0.65V2/263
Cross multiply
294 × 0.65V2 = 1.75 × 263
191.1 V2 = 460.25
V2 = 460.25 ÷ 191.1
V2 = 2.41 L
An aqueous solution has a hydroxide-ion concentration of 1.0x10^-3M. What is the pH of the solution?
a.11
b.3
c.-3
d.7
What is the wavelength of spectral line resulted from the electron transition from n=3 to n=2 in a hydrogen atom.
Answer:
[tex]\lambda=6.56x10^{-7}m[/tex]
Explanation:
Hello there!
In this case, it possible to use the Rydberg equation in order to calculate the wavelength for this transition from n=3 to n=2 as shown below:
[tex]\frac{1}{\lambda} =R_H(\frac{1}{n_f^2}-\frac{1}{n_i^2} )[/tex]
Thus, we plug in the corresponding energy levels and the Rydberg constant to obtain:
[tex]\frac{1}{\lambda} =10973731.6m^{-1}(\frac{1}{2^2}-\frac{1}{3^2} )\\\\\frac{1}{\lambda} =1524129.4m^{-1}\\\\\lambda=\frac{1}{1524129.4m^{-1}} \\\\\lambda=6.56x10^{-7}m[/tex]
Best regards!
¿
Que es la materia y qué es el volumen que ocupa la materia?
Todo en un estado sólido de materia tiene una forma y una longitud distintas. El volumen de un objeto es la cantidad de espacio que ocupa. Un sólido es un bloque de madera que conserva su forma y volumen cuando se coloca sobre una mesa.
Hope that helps!!!
¡Espero que ayude!
Will mark brainliest!!!
Can someone please help me with this???
what is 1 mol / 66.04g
Answer:
15.142338 mol/kg
Explanation:
(1 mole) / (66.04 grams)
How is chemical equilibrium achieved?
Question 15 options:
When the concentrations of reactants and products are constantly changing.
When the concentrations of reactants and products are constant.
When the concentrations favor the reactants.
When the concentrations favor the products.
Answer:
Explanation:
Equilibrium is achieved in a chemical reaction when there is a steady state with no change in concentrations.
So the answer is "When the concentrations of reactants and products are constant."
15.00 g aluminum sulfide and 10.00 g water react until the limiting reagent is used up. Here is the balanced equation for the reaction: ALS3 + 6 H2O ---> 2Al(OH)3 + 3 H2S (A) Which is the limiting reagent? (B) What is the maximum mass of H2S which can be formed from these reagents? (C) How many grams of the excess reactant will remain?
Answer:
A. it's H20
B. mH2O=17g
C. m Al(OH)3= 39g
m AlS3 = 6.15
The total pressure of all the gases inside a metal container is 9.8 atm. If the partial pressure of the oxygen in the container is 4.2 atm, what is the partial pressure of the rest of the gases in the container other than the oxygen?
5.6 atm is the partial pressure of the rest of the gases in the container other than the oxygen.
What is partial pressure?Each gas in a mixture adds to the overall pressure of a mixture. This portion represents the pressure. The pressure a gas would have if it were in its own volume and at its own temperature is known as the partial pressure. According to Dalton's law, the pressure distribution of an ideal gas mixture is equal to the combined partial pressures of the component gases.
The study of partial pressure is significant in the domains of physics, chemistry, and biology. The partial pressure of oxygen or carbon dioxide in the blood is used to calculate blood levels of each substance. The overall pressure in a container is equal to the sum of the partial pressures. The remaining gases must make up the remaining 5.6 atm if the oxygen partial pressure equals 4.2 atm and the sun reaches 9.8 atm in pressure.
Therefore, 5.6 atm is the partial pressure of the rest of the gases in the container other than the oxygen.
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100 pointts pls answer quick and no link :In the reaction, Hydrogen + Iodine --> Hydrogen Iodide at equilibrium, some Iodine is is added. What happens to the equilibrium?
Answer:
the concentration of hydrogen iodide will be higher than it was in the original equilibrium conditions.
Necesito su nomenclatura UIQPA
Answer:
3,3 Methyl hexyne
I hope it's helps you
A gas of certain mass occupies volume of 1.2 L at 37°C and 3 atm. At what temperature will the volume and pressure of this gas become one-third of their initial values?
Answer: At a temperature of 34.44 K the volume and pressure of this gas become one-third of their initial values.
Explanation:
Given : [tex]V_{1}[/tex] = 1.2 L, [tex]T_{1} = 37^{o}C = (37 + 273) K = 310 K[/tex]
[tex]P_{1}[/tex] = 3 atm, [tex]V_{2} = \frac{1.2}{3} = 0.4 L[/tex] , [tex]P_{2} = \frac{3}{3} = 1 atm[/tex]
Formula used to calculate the final temperature is as follows.
[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]
Substitute the values into above formula as follows.
[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{3 atm \times 1.2 L}{310 K} = \frac{1 atm \times 0.4 L}{T_{2}}\\T_{2} = \frac{1 atm \times 0.4 L \times 310 K}{3 atm \times 1.2 L}\\= \frac{124}{3.6} K\\= 34.44 K[/tex]
Thus, we can conclude that the final temperature is 34.44 K.
Que representa en la reacción química
Na2SO4(s)+H2O(1)=
Answer: The given reaction is a double displacement reaction.
Explanation:
A chemical reaction equation in which both positive and negative ions of two different reactants are exchanged then it is called a double displacement reaction.
For example, [tex]Na_{2}SO_{4} + H_{2}O \rightarrow H_{2}SO_{4} + Na_{2}O[/tex]
Here, hydrogen ions of [tex]H_{2}O[/tex] are replaced by the sodium ions of [tex]Na_{2}SO_{4}[/tex]. Also, sulfate ion of [tex]Na_{2}SO_{4}[/tex] are replaced by oxygen ion of [tex]H_{2}O[/tex].
Thus, we can conclude that the given reaction is a double displacement reaction.
