25,963 Answered Questions for the topic chemistry

Chemistry

02/02/24

How many ATOMS of sulfur are present in 2.05 moles of sulfur dichloride?
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Chemistry

02/02/24

How many ATOMS of nitrogen are present in 1.68 moles of nitrogen trifluoride? atoms of nitrogen

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Chemistry

02/02/24

How many GRAMS of silver chloride are present in 2.87 moles of this compound ? 411.32 grams.
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Chemistry

02/02/24

How many MOLES of oxygen are present in 3.87 grams of water ? moles.
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Chemistry

02/02/24

How many GRAMS of hydrogen are present in 3.17 moles of water ? grams.
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Chemistry

02/02/24

Rate Constant for First Order Reactions
Time(min) 0 60 90 300 600 [N2O][N2O] 0.250 0.228 0.216 0.128 0.0630 What is the value of the rate constant for the consumption of N2ON2O, given that this reaction is first order?
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Chemistry

02/01/24

Molar Mass Determination from freezing point
If I have calculated the freezing point using the cooling curve on excel (took the line of best fits from the initial temperature and plateau and set equal to each-other and solved). How can I now... more
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Chemistry Organic Chemistry

02/01/24

If N2 + 3H2 -> 2NH 3, how much H2 is needed to react with 15g of N2?
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Chemistry

02/01/24

Chemistry question
What volume (mL) of 1.50 × 10-1 M hydrochloric acid can be neutralized with 105 mL of 0.500 M sodium hydroxide? Include the balanced equation with your work. 
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Chemistry

02/01/24

How do we know when do draw a coordinate bond? Like in (ON)- there is a coordinate bond formed after removing an e- from N
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Chemistry

02/01/24

Why can't lonepairs come on axial bonds first in molecular geometry?
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Chemistry Physics

02/01/24

Why does the I.E of an ideal gas only depend on K.E/T
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Chemistry Physics

02/01/24

Why can't irreversible work be depicted in a graph?
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Chemistry

02/01/24

Calculate the molality of solution, freezing point depression, and the freezing point of the solution.
Camphor has a particularly large freezing point depression constant of 40 C/m. Camphor's Kf value is over 2o times larger than water's Kf value. Camphor has a freezing point of 176 C.a. Calculate... more
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Chemistry

02/01/24

Would a cleaner with a higher/lower boiling point be more ideal for cleaning a polar substance?
This is the question that my teacher posted, word by word. I am confused because I believe that it could go both ways. For example, lower boiling point would mean quicker evaporation, reducing... more
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Chemistry

01/31/24

A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) (0.070 N/cm) x ? = N/mm
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Chemistry

01/31/24

What is the frequency of green light that has a wavelength of 547 nm?
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Chemistry

01/30/24

Gas Stoichiometry
Please consider the following UNBALANCED reaction for the decomposition of trinitroglycerin: C3H5N3O9 = N2 + CO2 + H20 + O2. What mass of trinitroglycerin would be required to produce 50 L o2 if... more
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Chemistry Science

01/30/24

Chemistry Conversions
knowing that a proton weighs 1 mass unit and a neutron weighs one mass unit. write the 4 conversion factors you can derive from these equalities. you know that a carbon atom contains 6 protond and... more
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Chemistry

01/30/24

what are 2 - 3 feasible reactions to carry out in a school lab to determine their activation energy with and without a catalyst
what are 2 - 3 feasible reactions to carry out in a school lab to determine their activation energy with and without a catalyst? please indicate which catalyst can be used for each and ensure there... more
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Chemistry

01/30/24

Why does sulfur dichloride (SCl2) not follow the octet rule?
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Chemistry

01/30/24

At a constant volume
At constant volume, the heat of combustion of a particular compound, compound A, is - 3262k / m * ol When 1.029 g of compound A (molar mass = 115.09g / m * ol ) is burned in a bomb calorimeter, the... more
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Chemistry

01/30/24

A sample of an ideal gas in a

A sample of an ideal gas in a cylinder of volume 3.11 L. at 298 K and 2.44 atm expands to 8.68 L by two different pathways Path A is an isothermal, reversible expansion. Path B has two steps. In... more
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Chemistry

01/30/24

Automobile airbags
Automobile airbags contain solid sodium azide, NaN 3 , that reacts to produce nitrogen gas when heated, thus inflating the bag. 2 NaN 3 ( s ) ⟶ 2 Na ( s ) + 3 N 2 ( g ) Calculate the value of work,... more
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Chemistry

01/30/24

An ice cube with a mass
An ice cube with a mass of 54.8 g at 0.0 °C is added to a glass containing 445 g of water at 45.0 °C. Determine the final temperature of the system at equilibrium. The specific heat capacity of... more
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