Answer:
double replacement occurs
How many moles are in 58.6 L of N2gas at STP?
Answer:
[tex]\boxed {\boxed {\sf 2.62 \ mol \ N_2}}[/tex]
Explanation:
The relationship between moles and gases is unique. Regardless of the type of gas, there will always be 22.4 liters of gas in 1 mole, as long as it's at STP (standard temperature and pressure).
We can make a ratio using this information.
[tex]\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]
Multiply by the given number of moles.
[tex]58.6 \ L \ N_2 *\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]
Flip the fraction so the liters of nitrogen cancel.
[tex]58.6 \ L \ N_2 *\frac {1 \ mol \ N_2}{ 22.4 \ L \ N_2}[/tex]
[tex]58.6 *\frac {1 \ mol \ N_2}{ 22.4 }[/tex]
[tex]\frac {58.6 \ mol \ N_2}{ 22.4 }= 2.61607143 \ mol \ N_2[/tex]
The original measurement of liters has 3 significant figures, so our answer must have the same.
For the number of moles calculated, 3 sig figs is the hundredth place. The 6 in the thousandth place tells us to round the 1 to a 2.
[tex]2.62 \ mol \ N_2[/tex]
58.6 liters of N₂ gas at STP is equal to about 2.62 moles.
11.
Which of these statements is true about the two graphed parallelograms?
A
B
8
6
A
4
B'
D
C
2
D
C'
-6
2
4
6
-2.
-2
-4
-6
-8 +
A
They are similar, because one can be obtained by dilating the other about the origin with a scale factor of
Answer:
Explanation:
dfghyuiop[]5565677dam u baddie no comparing
write the electronic configuration of an Na+ and CL-1
Answer:
Na+ lost one electron: 1s2 2s2 2p6
Cl- gained an electron: 1s2 2s2 2p6 3s2 3p6
Explanation:
what type of solid is H20 (ice)?
Answer:
Ice is a molecular and crystalline solid.
Explanation:
Water freezes at 0 degrees Celsius; it has strong molecular bonds between the hydrogen and oxygen atoms of each molecule, and weaker intermolecular bonds between each molecule of water. The polarity of the molecules helps align them into an organized, repeating patterned, crystalline structure when a solid.
Science question: Which beat summarized the scientific process that led to our current understanding of DNA?
1 each scientist made an important but unrelated contribution
2. Scientists built on the previous work of other scientists to make new discoveries
3 and 4 are too long
Answer:
2
Explanation:
in terms of cells, it exists from previous existing cells, that means scientist are built up by the work of other scientist
Answer:
the answer is B
Explanation:
The volume of a gas is 400 mL when the pressure is 1 atm. At the same temperature, what is the pressure at which the volume of the gas is 2 L
Answer:
the pressure is equal to 0.2atm
The pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure 1 atm is 0.2 atm.
What is the combined Gas Law?According to combined gas law,
[tex]\rm \dfrac{PV}{nT} = R[/tex]
In the Combined Gas Law,if we change either one of the variables the others will also change.
When the moles of the gas is constant , the above equation can be written as ,
[tex]\rm \dfrac{P'V'}{T'} = \dfrac{PV}{T}[/tex]
Given is P = 1 atm , V= 400ml , V'= 2L= 2000ml , P'= ? T=T'
So we will substitute the values in the above formula keeping temperature constant.
[tex]\rm P'V' = PV\\\\\rm P' \times 2000 = 1 \times 400\\ \\\m P'= \dfrac{1\times 400}{2000} = 0.2 \; atm\\\\\rm P' = 0.2 \; atm\\[/tex]
Therefore the pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure is 1 atm is 0.2 atm.
To know more about Combined Gas Law:
brainly.com/question/13154969
#SPJ2
An ore is a combination of a metal and another element. TRUE OR FALSE
Answer:
Explanation:
ℎ ℎ
Using the reaction C12H22O11 + 12 O2 ->12CO2 + 11H2O (e). How many grams of carbon dioxide can be produced from 456.7g sucrose
Answer:
704.6 g CO2
Explanation:
MM sucrose = 342.3 g/mol
MM CO2 = 44.01 g/mol
g CO2 = 456.7 g sucrose x (1 mol sucrose/MM sucrose) x (12 moles CO2/1 mol sucrose) x (MM CO2/1mol CO2) = 704.6 g CO2
1. Which of the five types of reactions is taking place in the whoosh bottle? Justify your answer with evidence from the video.
Answer:
Other times I place a candle in water and cover it with a glass jar .
Explanation:
only to ... Many of you may already know this as the Whoosh Bottle demo due ... I have used this demo in the past for topics like exothermic reactions, combustion reactions, ... This adds to the evidence of a partial vacuum created in the bottle
Mechanism of aspirin by salicyclic acid reacts with acetic acid ? Mechanism of benzoic acid from benzamide?
Answer:
See explanation
Explanation:
The synthesis of aspirin is shown in the reaction scheme attached to this answer. The production of aspirin involves the reaction of acetyl salicyclic acid and acetic anhydride. HA in the reaction mechanism refers to an acid that is used in the reaction
Similarly benzamide, is converted to the carbonyl carbocation by reaction with acid. The -NH2 group is protonated and subsequently departs as a leaving group. An OH^- completes the mechanism forming a carboxylic acid. The movement of electrons is shown in the image attached.
Again, the diazotization of benzamide using sodium nitrate and concentrated HCl yields benzene diazonium chloride. Addition of water to benzene diazonium chloride yields the benzoic acid and nitrogen gas.
40 points
I have 400 mL of a 0.2 M simple syrup solution (made up of just sugar and water) that I want to boil down to result in a solution with a concentration of 0.5 M. How many milliliters of water would I need to evaporate?
Answer:
2000ml
Explanation:
you multiple 400ml with 0.5 ml to get the required meter for the water that needs to be evaporated
What are ancient plants and animal formed into rocks called it is a 7 letter word that starts with f
Answer:
Fossils
Explanation:
Ancient plants and animal formed into rocks called fossils.
A fossil can be defined as the mineral impression or remains of living organisms such as plants and animals that are prehistoric in nature.
A geologic column can be defined as a collection of rock layers that are typically grouped based on their relative ages in a descending order i.e from oldest to the youngest.
Generally, the layers of the rock that are found in various parts of the world are known to be different because they all comprises of distinct Earth's geological history (fossils).
Earth
Moon
SUN
Based on the diagram above, what moon phase would most likely be occurring?
The freezing point of pure water is 0 °C (32 °F). How do you think adding salt to water affects its freezing point?
write an ionic half equation for the formation of hydrogen during this electrolysis
Answer:
A half-equation shows you what happens at one of the electrodes during electrolysis. Electrons are shown as e-. A half-equation is balanced by adding, or taking away, a number of electrons equal to the total number of charges on the ions in the equation.
When positive metal ions (cations) arrive at the negative electrode (the cathode), they gain electrons to form neutral metal atoms. This is called reduction. For example:
Pb2+ + 2e- → Pb
When negative non-metal ions (anions) arrive at the positive electrode (the anode), they lose electrons to form neutral atoms or molecules. This is called oxidation. For example:
2Br- → Br2 + 2e-
Writing half equations
Cations go to the cathode. They need to gain enough electrons to make them neutral. So an Al3+ ion needs to gain three electrons:
Al3+ + 3e- → Al
Half-equations for non-metal anions are more difficult to balance. For example, chloride ions make chlorine gas. Most non-metal elements formed in electrolysis are diatomic molecules (eg Cl2). For example:
Cl- → Cl2
Add in two electrons to balance the charge so that both sides have the same charge. The two electrons need to go on the right-hand side, so that both sides have an overall charge of -2. For example:
2Cl- → Cl2 + 2e-
Although your question lacks some information a general answer is provided
The ionic half equation = [tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]
The formation of hydrogen takes place at the negative electrode in a cell and the ionic half reaction that shows the formation of the hydrogen gas at the electrode is written as :
[tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]
Ionic half equation is the representation of the chemical activity ( reaction ) occurring at one of the electrodes of a cell. to balance a half reaction we add or remove electrons equal to charges on the ions.
Hence the Ionic half equation for the formation of hydrogen during electrolysis is written as ; [tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]
learn more : https://brainly.com/question/4046381
(I ONLY HAVE 15 MIN LEFT IN MY TEST PLEASE HELP ME!!)
If 107 g of a substance reacts with 76 g of another substance, what will be the mass of the products after the reaction
Answer:
183g
Explanation:
mass can't be created or destroyed so i think you just add up the total amounts of matter
If you divided one regtangle into ten smaller regtangles and then each of those into ten each of the smallest regtangles is?
Answer:
0.01.
Explanation:
This is because, if you divided one rectangle by ten, it will give 0.1
That is 1/10 = 0.1
If each of the smaller rectangles is divided by 10.
It will be 0.1/10 which will be equal to 0.01.
The rectangles will be 0.01 each.
When a 8 gram slice of bread is burned under a beaker of 4500 grams of water, it heats up the water by 1.3 degrees Celsius. The specific heat of water is 1 cal/g degree C. How many calories does this slice of bread contain
Answer:
[tex]5850\ \text{cal}[/tex]
Explanation:
m = Mass of water = 4500 g
c = Specific heat of water = [tex]1\ \text{cal/g}^{\circ}\text{C}[/tex]
[tex]\Delta T[/tex] = Change in temperature of water = [tex]1.3^{\circ}\text{C}[/tex]
Heat is given by
[tex]q=mc\Delta T\\\Rightarrow q=4500\times 1\times 1.3\\\Rightarrow q=5850\ \text{cal}[/tex]
A slice of the bread contains [tex]5850\ \text{cal}[/tex].
45.89 g of Hydrogen atoms contains how many moles of Hydrogen
atoms?
Please show work it’s due in 5 minutes I’ll give brainliest
2.63 g
Explanation:
One way to approach this problem is to determine the percent composition of hydrogen in water.
Is this balanced ?2 Fe(NO3)3 + 3 MgSO4 → 3 Mg(NO3)2 + 2 Fez(SO4)3
it shoudl be : 2Fe(NO3)3 + 3MgSO4 → 3Mg(NO3)2 + Fe2(SO4)3
(the difference is Fe2(SO4)3 has no coefficient)
A closed gas system initially has volume and pressure of 6400mL and 1.49atm with the temperature unknown. If the same closed system has values of 657 torrs, 9660mL, and 2450C, what was the initial temperature in K?
Answer: The initial temperature was 588 Kelvin
Explanation:
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 1.49 atm
[tex]P_2[/tex] = final pressure of gas = 657 torr = 0.864 atm (760 torr = 1atm)
[tex]V_1[/tex] = initial volume of gas = 6400 ml
[tex]V_2[/tex] = final volume of gas = 9660 ml
[tex]T_1[/tex] = initial temperature of gas = ?
[tex]T_2[/tex] = final temperature of gas = [tex]245^0C=(245+273)K=515K[/tex]
Now put all the given values in the above equation, we get:
[tex]\frac{1.49\times 6400}{T_1}=\frac{0.864\times 9660}{515}[/tex]
[tex]T_1=588K[/tex]
The initial temperature was 588 Kelvin
True or false: Sometimes older rocks end up on top of younger rocks.
Answer:
true
downstream to the riverbed. However, the most common mechanism to produce older rocks on top of younger is by thrust faulting. Thrust faults form where rocks are being compressed, usually by plate tectonic mechanisms. Thrust faults rip up older strata and pile it on top of younger rocks.
Explanation:
What is the independent
variable in this lab?
temperature
distance
thermal conductivity
time
specific heat
Answer:
time
Explanation:
time can be controlled and set while all the others can't be necessarily controlled
What challenges or opposition did Galileo face in having his theories accepted and why
Answer:
Poorness is the one because he needs large money for his inventions and tools to use in them. He also have problems in securing patent protection and dealing with publishing pressure.
But the greatest problems is the opposition of his discoveries by the Catholic Church, they banned his books, they abstain him from teaching inventing, and writing. But as we know, a hero stands even on the hardest times
Explanation:
The challenges or opposition to Galileo Galilei, an astronomer, and mathematician, struggled with issues that contemporary scientists would recognize, such as obtaining funding, acquiring patent protection, and coping with the urge to publish.
Who was Galileo?Galileo was an astronomer and scientist. He was from Italy. He is a famous scientist and did many discoveries in the field of astronomy. The main discoveries were craters and mountains on the moon and the stars of the galaxy.
He was criticized for believing in the kinetic hypothesis, and he denied astronomical authority. The challenges he faced were patent problems and funding problems.
Thus, Galileo was criticized for defending the kinetic hypothesis and denying the astronomical authority of Scripture.
To learn more about Galileo, refer to the link:
https://brainly.com/question/14490755
#SPJ2
HEELPPP!!!
What is the charge of the nucleus?
a) negative
b) positive
c) neutral
Answer:positive
Explanation:
Answer:
Positive.
Explanation:
Since a neutral charge won't cancel out a positive charge, the overall charge of a nucleus is positive.
does anyone have the gizmo cell types answer key for activity d?
Answer:
im sorry i dont
Explanation:
The teacher asked the students to design an experiment that would demonstrate that temperature will affect the pressure of a gas. Which of the
following would be a valid experiment that shows the correct relationship between gas temperature and pressure?
The correct option is option A. when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.
How are pressure and temperature of a gas related ?
According to Gay lussac's law, the temperature and pressure of a gas are directly proportional to each other, provided the volume is constant.
When the temperature of a gas is increased, the molecules gain more kinetic energy and hence the frequency of them hitting the walls of the container increases which basically implies that the pressure increases.
On the other hand when the temperature is low, the molecules do not have substantial kinetic energy to hit the walls of the container frequently, that is the pressure decreases.
When the bicycle tires were kept out in the winter, the low temperature decreased the air pressure inside the tires. While when they were warmed at room temperature, the pressure inside the tires increased.
Therefore, the correct option is option A. when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.
To know more on Gay lussac's law, click on
https://brainly.com/question/30758452
#SPJ2
Water conservation is important for which of the following reasons?
A. Demand for water is increasing.
B. Water treatment is expensive.
C. Pollution is likely to decrease water supply in the future.
D. All of the above
D
all of above becuase it's all conservation
Answer:
The answer is c which is pollution is likely to decrease water supply in the future
Which of the following is the chemical formula for an acid?
- NHO3 (aq)
- NaOH (aq)
- NH3 (g)
- HCl (g)
- SCl2 (g)
Why?
Answer:
NH3 and HCl
Explanation:
NH3 and HCl are acids because of their hydrogen ions. NHO3 and NaOH are bases (you can tell because they have an OH). I don't believe SCl2 is an acid or a base
helpppppp plssssssss does anyone know this ? what type of structure is shown in the diagram?
Answer:
the structure of atom which discovered by Thomson the describe on how the sub-atomic particles are arranged in an atom