Answer:
The gas pressure inside the flask is higher than outside the flask ornthe atmospheric pressure.
Explanation:
Given a U-tube manometer with water in between each arm of U-tube. One end is open to the atmosphere while one end is sealed to a flask filled with a gas. The water in the open end of the tube is experiencing a pressure equal to the atmospheric pressure whereas the water at the end sealed of to the flask is experiencing pressure due to the gas in the flask.
If the water level in both arms of the tube are equal, then the pressure due to the gas is equal to atmospheric pressure.
If the water level in the arm sealed to the gas is higher than that of the open end, The gas pressure is less than the atmospheric pressure.
If the water level in the arm sealed to the flask is lower than the open end, the pressure due to the gas is higher than atmospheric pressure.
From the question, when the water level is higher outside the flask than inside, then the gas pressure inside the flask is higher than the atmospheric pressure.
the number of ___ in an atom tells you how many chemical bonds that atom can form
Energy changes form or is transferred through the action of forces. An example of kinetic energy changing to potential energy is?
A) a bolder sitting on a cliff.
B)a person running around a track.
C) a car being driven up a hill and being parked.
D) a rubber band being stretched and being broken.
Answer:
I think answer is option no. C
calcium + zinc nitrate ------->
a) zinc + calcium chloride
b) there will be no reaction
c) zinc + calcium nitrate
d) calcium + zinc nitrate
Answer:
c
Explanation:
there will be displacement reaction taking place
Answer:
there will be no reaction
Explanation:
there will be no reaction since calcium does not displace zinc
As current flows through a system, what happens to the voltage available at each load?
Answer: voltage drops in each resistor ΔU= RI
Explanation: if lamps or other resistor which cause load are in series in
Electric circuit, current I passing circuit is same. Voltage decreases
In every resistor
how does pentene become pentane?
How does propene become propane?
Need help with this chemistry problem
Where is the potential energy to run the plant?
A 3
B
4
С
1
D
2
Answer: C
Explanation:
your well wisher
How many moles of NH3 could you produce with 0.24 moles of H2 and excess nitrogen gas?
Answer:
[tex]0.16\; \rm mol[/tex].
Explanation:
[tex]\rm H_2[/tex] and [tex]\rm N_2[/tex] react to produce [tex]\rm NH_3[/tex] through the following reaction:
[tex]\rm 2\; N_2 + 3\; H_2 \to 2\; NH_3[/tex].
The ratio between the coefficients and [tex]\rm NH_3[/tex] and [tex]\rm H_2[/tex] is:
[tex]\displaystyle \frac{n({\rm NH_3})}{n({\rm H_2})} = \frac{2}{3}[/tex].
This coefficient ratio would be the ratio between the quantity of [tex]\rm NH_3[/tex] produced and the quantity of [tex]\rm H_2[/tex] consumed in this reaction only if [tex]\rm H_2\![/tex] is a limiting reactant.
The other reactant in this reaction, [tex]\rm N_2[/tex], is in excess. Hence, [tex]\rm H_2[/tex] would be the limiting reactant. Hence, the coefficient ratio could be used to find the quantity of [tex]\rm NH_3[/tex] produced in this reaction.
[tex]\begin{aligned}n({\rm NH_3}) &= \frac{n({\rm NH_3})}{n({\rm H_2})} \cdot n({\rm H_2}) \\ &= \frac{2}{3} \times 0.24\; \rm mol \\ &= 0.16\; \rm mol \end{aligned}[/tex].
How many kJ are 3,340J?
options:
3,340,000 kJ
334,000 kJ
3.340 kJ
33.40 kJ
How many grams are in 2.45E24 formula units of Fp3BZ2? The molar mass of Fp3Bz2. is 97.05
g/mol.
Answer:
394.99g
Explanation:
The number of moles of a substance can be calculated by dividing the number of atoms of such substance by Avagadro's number (6.02 × 10^23)
n = nA ÷ 6.02 × 10^23
The number of atoms of Fp3BZ2 in this question is 2.45E24 formula units i.e. 2.45 × 10^24
n = 2.45 × 10^24 ÷ 6.02 × 10^23
n = 2.45/6.02 × 10^(24-23)
n = 0.407 × 10¹
n = 4.07moles
Using mole = mass/molar mass
Where; molar mass of Fp3Bz2. is 97.05
g/mol.
mass = molar mass × mole
mass = 97.05 × 4.07
mass = 394.99g
Explain why it is necessary to use a mixture, alumina and cryolite, rather than just
alumina
Explanation:
The mixture of cryolite and aluminium oxide has a lower melting point than pure aluminium oxide. This means a lower amount of energy is required to establish effective conditions for electrolysis and thus makes it more cost effective.
What is the temperature range for our planet? Why is this important?
Answer:
are temperature range for are planet is -129 ⁰F (-18⁰C) that's the minimum.
+136⁰F (+58⁰C) this is the maximum surface temperature
Explanation:
"the planet is not too close or too far away from the sun, earth's atmosphere also plays a vital role is regulating the temperature by providing a blanket of gases that not only protects us from excessive heating and harmful radiation from the sun, but also traps heat rising from earth's interior core, keeping us warm"- Space.com
Why is nitrogen more electronegative than lithium
What mass of methane (CH4) gas occupies a volume of 0,462 L at 1atm and 273K
Explanation:
Since methane gas is at 1 atm and 273 K, it is at standard temperature and pressure(STP).
One mole of every gas occupies 22.4 dm^3 at STP, and vice versa. So,
22.4 dm^3 at STP of CH4=1 mol=12+4(1)=16 g
0.462 L(0.462 dm^3) at STP of CH4
=(16 g×0.462 dm^3)/22.4 dm^3
=0.33 g
PLEASE HELP ME. REAL ANSWERS ONLY PLZ
Answer:
Please make it full I'm not seeing it
The question is~ Which is not a biomass energy source?
Answer:
I think its sun but I'm not sure
Balance this chemical equation. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."
Choose... H 2 O 2 → Choose... H 2 O + Choose... O 2
An atom or bonded group of atoms with a positive or neqative charge
Answer:
Radical
Explanation:
Wait did I get your quiz right? Are you asking for the name? If so it's radical
Calcium has the symbol Ca and its ions have a charge of +2. Chlorine has the symbol Cl and its ions have a charge of -1. In the ionic compound calcium chloride, how many chloride ions are there for each calcium ion?
Answer:
There are two chloride ions for each calcium ion
Explanation:
The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.
If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).
which substances corrode copper?
What might be a possible outcome if you left a soda in a glass bottle in the freezer for a very long time?
A.
The gases in the soda will increase in volume as the soda transitions from liquid to solid. This will cause the bottle to explode.
B.
The gases in the soda will decrease in volume as the soda transitions from liquid to solid. This will cause the bottle to implode or collapse.
C.
H2O will decrease in volume when transitioning from a liquid to solid state. This will cause the bottle to implode or collapse.
D.
H2O will increase in volume when transitioning from a liquid to solid state. This will cause the bottle to explode.
A the soda will increase in volume
The element with the most stable electron configuration shown below would be___
a) Magnesium
b) Oxygen
c) Argon
d) Carbon
Determine the mass of aluminum (Al) produced in the reaction if 30.00 grams of magnesium (Mg) was consumed with the equation given; 2 AlPO4(aq) + 3 Mg(s) = 2 Al(s) + 1 Mg3(PO4)2(aq)
Answer:
22.21 grams of aluminum (Al) was produced in the reaction if 30.00 grams of magnesium (Mg) was consumed.
Explanation:
The balanced reaction is:
2 AlPO₄ (aq) + 3 Mg (s) → 2 Al (s) + 1 Mg₃(PO₄)₂ (aq)
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
AlPO₄: 2 molesMg: 3 molesAl: 2 molesMg₃(PO₄)₂: 1 moleBeing the molar mass of each compound:
AlPO₄: 122 g/moleMg: 24.31 g/moleAl: 27 g/moleMg₃(PO₄)₂: 262.93 g/moleBy reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
AlPO₄: 2 moles* 122 g/mole= 244 gramsMg: 3 moles* 24.31 g/mole= 72.93 gramsAl: 2 moles* 27 g/mole= 54 gramsMg₃(PO₄)₂: 1 mole* 262.93 g/mole= 262.93 gramsYou can apply the following rule of three: if by stoichiometry 72.93 grams of Mg produces 54 grams of Al, 30 grams of Mg produces how much mass of Al?
[tex]mass of Al=\frac{30 grams of Mg*54 grams of Al}{72.93 grams of Mg}[/tex]
mass of Al= 22.21 grams
22.21 grams of aluminum (Al) was produced in the reaction if 30.00 grams of magnesium (Mg) was consumed.
Q 20.17: In IR spectroscopy, a conjugated ketone will produce a C=O signal at a ___________________ wavenumber, compared with a non-conjugated ketone of similar structure.
Answer:
See explanation
Explanation:
Infrared spectroscopy is concerned with transitions between vibrational energy levels. Each infrared active vibration leads to a change in dipole moment.
A ketone compound contains the -C=O group whose signal normally occurs at about 1710 cm-1.
A conjugated ketone is one in which the -C=O group is attached to the -C=C group. This leads to delocalization and reduces the electron density of the C=O double bond, which weakens this bond hence lowering the stretching frequency of the -C=O bond from 1710 to about 1680cm-1.
Humans have the ability to change the characteristics, or traits, of organisms over time. What is this process called?
A. Selective breeding
B. Artificial selection
C. Gene Therapy
D. Both A and B
Answer:
gene therapy.
Nitrogen monoxide + oxygen → nitrogen dioxide.
How do.i write that in skeleton equation
How many moles are in 1.7 x 10^50 particles of Al?
2.8 × 10²⁶ moles Al
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 1.7 × 10⁵⁰ particles Al
[Solve] moles Al
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[DA] Set up: [tex]\displaystyle 1.7 \cdot 10^{50} \ particles \ Al(\frac{1 \ mol \ Al}{6.022 \cdot 10^{23} \ particles \ Al})[/tex][DA] Divide [Cancel out units]: [tex]\displaystyle 2.82298 \cdot 10^{26} \ moles \ Al[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
2.82298 × 10²⁶ moles Al ≈ 2.8 × 10²⁶ moles Al
If one mole of nitrogen is used how many liters of hydrogen are needed
Answer:
300
Explanation:
what would be necessary to change a liquid to a gas
Answer:
latent heat, also called the heat of vaporization, is the amount of energy necessary to change a liquid to a vapour at constant temperature and pressure.
Explanation:
Suppose you crushed an antacid tablet before dissolving it in a glass of water. The crushed antacid tablet would:
a. take the same amount of time to dissolve as a whole antacid tablet.
b. dissolve more slowly than a whole antacid tablet.
c. take more time to dissolve than a whole antacid tablet.
d. dissolve more quickly than a whole antacid tablet.
Explanation:
dissolve more quickly than a whole antacid tablet.
