Answer: math is gay
Explanation:
Write the balanced NET IONIC equation for the reaction that occurs when ammonium bromide and sodium hydroxide are combined. This reaction is classified as fill in the blank 6 . A. Strong Acid Strong Base B. Weak Acid Strong Base C. Strong Acid Weak Base D. Weak Acid Weak Base The extent of this reaction is: fill in the blank 7 . A. ... Below 50% B. ... 50% C. ... Above 50% D. ... 100%
Answer:
c
Explanation:
Use the information to answer the following question.
A machinist creates a solid steel part for a wind turbine. The part has a volume of 1,015 cubic centimeters. Steel can be purchased for $0.29 per kilogram and has a density of 7.95 g/cm3.
If the machinist makes 500 of these parts, what is the total cost of the steel?
A.
$2.34
B.
$1,152.75
C.
$2,340.08
D.
$1,170.84
Answer: D
Explanation:
Part
A certain gas is present in a 110 L cylinder at 2.0 atm pressure. If the pressure is increased to 4.0 atm, the volume of the gas
decreases to 5.5 L. Find the two constants k. the initial value of k, and kr, the final value of k, to verify whether the gas obeys Boyle's
law.
Express your answers to two significant figures separated by a comma.
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Answer:
See explanation
Explanation:
Recall that from Boyle's law;
Volume is inversely proportional to pressure at constant temperature
V α 1/P
V = k/P
k = PV
Hence, for Boyle's law, PV = constant
In the first case;
P = 2.0 atm , V= 110 L
PV = 110 * 2.0 = 220
In the second case;
P = 4.0 atm , V= 5.5 L
PV = 4.0 * 5.5 = 22
Since PV is not constant in both cases, the gas does not obey Boyle's law.
What volume will the gas in the balloon with 4.3 L of gas at 350K occupy at 250K?
Answer:
Explanation:
300
The phenomenon that causes air masses and water to bend or curve is the ______________.
PLZ I NEED HELP ILL GIVE BRAINLIEST
Answer:
The Coriolis effect
Explanation:
The Coriolis effect is the effect that makes tornados, water spouts, and are often seen in storms. They make water curve and rotate as well as the wind And current.
explain why we see the pattern between predator and prey
Answer:
The food chain starts as prey to a preditor and then when the preditor dies the prey eat the preditor
Explanation:
Just that
I NEED HELP WITH THIS CHEMISTRY QUESTION PLS
Answer:
Iron, according to:
[tex]2Al(s)+3Fe(NO_3)_2(aq)\rightarrow 3Fe(s)+2Al(NO_3)_3(aq)[/tex]
Explanation:
Hi there!
In this case, according to the law of conservation of mass, which states that matter cannot be neither created nor destroyed, it is possible for us to figure out the missing element in the reaction by taking into account this is a single displacement reaction in which Al goes with NO3 to produce the Al(NO3)3, and therefore the other element would be iron (Fe) as can be seen on the following chemical reaction:
[tex]2Al(s)+3Fe(NO_3)_2(aq)\rightarrow 3Fe(s)+2Al(NO_3)_3(aq)[/tex]
Best regards!
Large cities in the U.S. often formed near the ocean.
What benefit does the ocean provide for people in nearby large cities?
Answer:
a means of work
Explanation:
since its near oceans they are closer to the fish
Deep water currents are formed partly due to the amount of _________________ in the water.
Answer:
Density differences
Explanation:
The water transports cool masses of air and hot air, the transports is driven by the amount of changes of Temperature and Salinity (ThermoHaline)
A 38.2g sample of hydrogen gas, H, is placed into a 2-L soda bottle. IfI keep the pressure and
temperature constant, how large would my container need to be if I increased hydrogen's mass to 50.0-g?
Answer:
[tex]V_2=2.62L[/tex]
Explanation:
Hello there!
In this case, according to the given problem, it is possible for us to notice that the equation to be used is the Avogadro's one in terms of mass because this is applied to the same gas, hydrogen:
[tex]\frac{V_2}{m_2} =\frac{V_1}{m_1} \\\\[/tex]
Thus, by considering both the initial and final masses and the initial volume, we can compute the final volume as shown below:
[tex]V_2 =\frac{V_1m_2}{m_1} \\\\V_2=\frac{2L*50.0g}{38.2g} \\\\V_2=2.62L[/tex]
Best regards!
How much energy is required to raise the temperature of 10.6 grams of gaseous neon from
20.0 °C to 37.9 °C ?
Answer:
Approximately [tex]1.95 \times 10^{2}\; \rm J[/tex].
Explanation:
Look up the specific heat of gaseous neon:
[tex]c = 1.03 \; \rm J \cdot g^{-1} \cdot K^{-1}[/tex].
Calculate the required temperature change:
[tex]\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K[/tex].
Let [tex]m[/tex] denote the mass of a sample of specific heat [tex]C[/tex]. Energy required to raise the temperature of this sample by [tex]\Delta T[/tex]:
[tex]Q = c \cdot m \cdot \Delta T[/tex].
For the neon gas in this question:
[tex]c = 1.03\; \rm J \cdot g^{-1}\cdot K^{-1}[/tex].[tex]m = 10.6\; \rm g[/tex].[tex]\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K[/tex].Calculate the energy associated with this temperature change:
[tex]\begin{aligned}Q &= c \cdot m \cdot \Delta T \\ &= 1.03\; \rm J \cdot g^{-1}\cdot K^{-1} \times 10.6\; \rm g \times 17.9\; \rm K \\ &\approx 1.95 \times 10^{2}\; \rm J\end{aligned}[/tex].
list any 5 non metals? plz
Answer:
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Please help!!!!!!!!!!!!!!
Answer:
my guy we need to read lesson cuz int know what any of that mean
Explanation:
What is the frequency of light (in per seconds) that has a wavelength of 670 nm?
Answer:
[tex]f=4.47\times 10^{14}\ Hz[/tex]
Explanation:
Given that,
The wavelength of light, [tex]\lambda=670\ nm=670\times 10^{-9}\ m[/tex]
We need to find the frequency of the light. The relation between the frequency and wavelength is given by :
[tex]v=f\lambda[/tex]
The speed of light is equal to c.
So,
[tex]f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{670\times 10^{-9}}\\\\f=4.47\times 10^{14}\ Hz[/tex]
So, the frequency of light is equal to [tex]4.47\times 10^{14}\ Hz[/tex].
What is the primary source of energy that helps form sediment?
Answer:
Sediment forms when any type of rock is weathered, a process driven by energy from the sun. Magma forms when any type of rock is melted, a process driven by energy from Earth's inter
Explanation:
This compound, (C10H12O3), shows strong, sharp absorption between 1700 and 1720 cm-1, and strong, broad absorption over the region 2500-3000 cm-1. Given this information and the following NMR data, please draw the structure of the compound in the box below.
1H-NMR: 2.49 ppm, t(2H); 2.80 ppm, t(2H); 3.72 ppm, s(3H); 6.78 ppm, d(2H); 7.11 ppm, d(2H); 12.4, s(1H) 13C-NMR: 173.89; 157.87; 132.62; 128.99; 113.55; 54.84; 35.75; 29.20
Answer:
Explanation:
The peak at 1700-17200 cm⁻¹ in the infrared spectrum shows the existence of a carbonyl group (C=O). The appearance of an OH peak is shown by the broad peak at 2500-3000 cm⁻¹. The peak at 12.4 ppm in 1H NMR identifies the existence of carboxylic acid. The peaks at 6.78 ppm and 7.11 ppm suggest that the prevalence existence of a benzene ring in the molecule. Because these peaks are doublets, the benzene is being para-substituted.
The existence of the CH2 group is shown by the peak at 2.49 ppm, which integrates 2 hydrogens. Provided that the breaks are doublets, It would be bound to another CH2 molecule as well as carbon that is devoid of hydrogen (benzene carbon).
The existence of the CH2 group, which is linked to the above-listed CH2 group, is also demonstrated by the next peak at 2.8 ppm. It must be bonded with carbonyl carbon so it breaks as a doublet. As a result, it has a greater chemical transition. The CH3 category is shown by the peak at 3.72 ppm. Its chemical change is strong, indicating that CH3 is linked to an oxygen atom that is linked to benzene.
NMR details at 13C. Carbonyl carbon of acid has a high (peak) at 173.89 ppm. Benzene carbon peaks range from 113.55 to 157.87 ppm. The peak at 64 is made up of CH3, while the other two are made up of CH2.
The structure of the diagram is shown below with its degree of unsaturation.
Describing Radiation Detection Instruments
Describe the nature and variety of instruments used to detect radiation.
Answer:A Geiger counter is an instrument used for detecting and measuring ionizing radiation. Also known as a Geiger–Müller counter (or Geiger–Muller counter), it is widely used in applications such as radiation dosimetry, radiological protection, experimental physics, and the nuclear industry.
Answer:
Geiger counter
scintillation counter
dosimeter
film badge
detection of ionizing radiation
detection of radiation in the environment
determination of the concentration of radio isotopes in the body
film sensitive to radiation
Explanation:
on edg
5
How many J of energy are needed to raise the temperature of 18.3 g of
water from 11.88°C to 49.32°C?*
2540 J
1740 J
2870 J
3570 J
Q = mcΔT, where Q is the heat energy, m is the mass, c is the specific heat, and ΔT is the change in temperature (T₂-T₁). The specific heat of water is 4.184 J/g °C. We are given the mass of water (m = 18.3 g), the final temperature (T₂ = 49.32 °C), and the initial temperature (T₁ = 11.88 °C). The change in temperature, ΔT, equals 49.32 °C - 11.88 °C = 37.44 °C. With all these values at hand, we can solve for the amount of energy needed, Q:
Q = (18.3 g)(4.184 J/g °C)(37.44 °C) = 2866.7 J ≈ 2870 J (three sig figs).
A cold drink has been placed outside on a hot day. As time passes, the outside of the cup forms water droplets on it. What phase change has occurred?
A. Melting
B. Freezing
C. Condensing
D. Vaporizing
Answer:
the answer is c. condensing
A solution which has more H+ ions than OH- ions will have a pH greater than 7.
A. True
B. False
Answer:
True
Explanation:
More the concentration of H⁺ ions than OH⁻ions the pH value will be less than 7. Therefore, the given statement is false.
What is pH?The pH of a solution can be described as the negative logarithm of hydrogen (H⁺) ion concentration. pH is mathematically inversely proportional to the concentration of hydrogen ions.
pH = - log ([H⁺])
In chemistry, pH is used to determine the acidity or basic strength of an aqueous solution. Acidic solutions are determined to have lower pH values than alkaline solutions.
The pH scale exhibits a range from 0 to 14 while pH 7.0 is neutral. A low pH value is acidic while a high pH means basic.
If the concentration of H⁺ ions than that of OH⁻ ions then the pH value of the solution will decrease and a low pH value of 7 indicates that the solution is acidic.
Learn more about pH value, here:
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A plastic material has a mass of 3.48 g and a volume of 10 mL.
What is the density of the object?
Please show your work to receive credit.
Plate tectonics is helpful in explaining many things we observe on Earth. Which of the following is the best example of something that results from tectonic plate movement?
Answer: Seafloor spreading causes changes in coastlines
How might the population of owls be affected if the population of grasshoppers were to suddenly decrease
Answer:
The population of grasshoppers would increase becuase there arent as many owls to hunt?feed on them.
Explanation:
Hope this helps
how many types of hybridization does carbon undergo?
Answer:
For carbon the most important forms of hybridization are the sp2- and sp3- hybridization. Besides these structures there are more possiblities to mix dif- ferent molecular orbitals to a hybrid orbital. An important one is the sp- hybridization, where one s- and one p-orbital are mixed together.
A _________________ is the path of energy transfer from producer to consumers.
Someone please help
Answer: Food chain
Explanation: none
What subatomic particle is not considered when calculating atomic
mass?
electrons
protons
neutrons
Answer:
Electrons are not considered.
Explanation:
An electron's mass is around 9.1 * 10^-31 kg, whereas the mass of protons and neutrons is around 1.7 * 10^-27 kg. Since electrons are about 1000x smaller than protons and neutrons, they are not considered to contribute significantly to the atomic mass.
A chemist must prepare 0.200 L of aqueous silver nitrate working solution. He'll do this by pouring out some aqueous silver nitrate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the silver nitrate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.
A chemist must prepare 0.200 L of 1.00 M aqueous silver nitrate working solution. He'll do this by pouring out 1.82 mol/L aqueous silver nitrate stock solution into a graduated cylinder and diluting it with distilled water. How many mL of the silver nitrate stock solution should the chemist pour out?
Answer: 0.110 L
Explanation:
According to the dilution law,
[tex]M_1V_1=M_2V_2[/tex]
where,
[tex]M_1[/tex] = molarity of stock silver nitrate solution = 1.82 M
[tex]V_1[/tex] = volume of stock silver nitrate solution = ?
[tex]M_1[/tex] = molarity of diluted silver nitrate solution = 1.00 M
[tex]V_1[/tex] = volume of diluted silver nitrate solution = 0.200 L
Putting in the values we get:
[tex]1.82M\times V_1=1.00M\times 0.200L[/tex]
[tex]V_1=0.110L[/tex]
Therefore, volume of silver nitrate stock solution required is 0.110 L
Balance the following skeleton reaction in acidic solution (if the coefficient is 1, put 1; if the coefficient is 0, put O) and identify the oxidizing and reducing agents. For the oxidizing and reducing agent, enter numbers and +/- directly for superscripts and subscripts.
(eg. enter HCO3- for HCO3-, Cu2+ for Cu2+)
Cr2012-(aq) + Zn(s) — Zn2+(aq) + Cr3+(aq)
Cr20-2-(aq) + Zn(s) + H+(aq) +
H20(1) —> Zn2+(aq) + Cr3+(aq) +
H+(aq) + H2O(1) (acidic)
Oxidizing agent:
Reducing agent:
Answer:
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Explanation:
djdjsjsdkdkdk
A solution has a pH of 9.5. Is the solution an acid or a base?
Answer:
The solution is Basic
explain the importance of changing states of matter
As a result, when a substance absorbs enough energy then its atoms or molecules move around. And, when increase in this energy takes place then atoms tend to collide frequently with each other. Hence, it causes change in state of a substance. Therefore, changes in matter are important for the conservation of energy
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