J.R. S.

09/25/17

Question regarding enzyme kinetics

Under conditions of saturating amounts of substrate the rate of formation of product is 50 nanomoles per ml of reaction volume every minute. [Hint: what do the words saturating amounts of substrate... more

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Biochemistry Enzyme Kinetics

09/25/17

Question involving enzyme kinetics

Under conditions of saturating amounts of substrate the rate of formation of product is 50 nanomoles per ml of reaction volume every minute. [Hint: what do the words saturating amounts of substrate... more

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Physical Science

09/25/17

All phase changes require the addition of heat

asking about heat

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Chemistry

09/24/17

the density of mercury is 13.53 g/cm^3. what is the density in lbs/gallon

i need to do this using dimensional analysis

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Chemistry

09/24/17

Chemistry question

In the reaction of 4.3 g of h2 and 6.11g of o2 2.0g of water was isolated. what in the percentage yield of water?

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Chemistry Chemistry Lab Calcium Oxalate

09/24/17

why the change in the calcium oxalate equilibrium is produced?

We hace experimented with calcium oxalate and i have some observations that could help: First, we made a solution with 5mL of calcium chloride 0,1 M and 5 mL of sodium oxalate 0,1 M. this solution... more

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Time Average

09/24/17

Work out the average of texts sent per minute and per hour.

If 24,000 messages were sent within 100hrs what is the average of texts sent per hour? per minute? additional: per second?

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Solving Word Problems Using The Mixture Principle

09/23/17

A 30% salt solution is prepared by mixing a 20% salt solution and 45% salt solution. How many litres of each must be used to produce 60 L of the 30% salt ?

Its is asking. How many litres of salt solution must be produced

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Mla in Text citation

09/22/17

I am writing a paper and I have to cite

so if my intext citation is:("Female genital mutilation (FGM)"). Than after I use it once cant I shorten it to just ("FGM")?

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Chemistry Mole Concept

09/22/17

What is the molar volume at NTP and STP ? In a book its written both are 22.4L how come ?

In other books its written 22.7 for stp and 22.4 for ntp...pls help !

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Chemistry

09/21/17

PLEASE HELP ME ON THIS QUESTION

A space shuttle uses more than one type of rocket fuel. The two solid rocket boosters use a fuel mixture of aluminum and ammonium perchlorate that reacts according to the equation3Al(s) +... more

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True Or False

09/21/17

In stationary phase the lower the temperature the faster the substance will elute

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Conversion

09/21/17

I am trying to determine what the length and width are of raised planters.

I have multiple areas. For example, one planter is 196 square feet. How do I convert square feet into length and width?

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Word Problems

09/21/17

How many 2.5 inch by 6 inch tiles will fit on a back splash that is 2.5 feet tall and 8 feet long?

how many 2.5 inch by 6 inch tiles will fit on a back splash that is 2.5 feet tall and 8 feet long?

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Chemistry Lab

09/20/17

A mixture weighing 30.500 g contained 8.500 g NH4Cl, 21.250g SIO2, with the remainder being NaCl. Find the percent, by weight, of each component.

this is for my chem lab

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Chemistry

09/20/17

A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at

22. chemistry

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Chemistry

09/20/17

23. What is the rate of change of the concentration of N2O (that is, Δ[N2O]/Δt)? 2 N2O(g) → 2 N2(g) + O2(g)

Dinitrogen monoxide decomposes into nitrogen and oxygen when heated. The initial rate of the reaction is 0.030 M/s.

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Chemistry

09/20/17

For the reaction 2 A + B → C, the initial rate is measured at several different reactant concentrations. From the resulting tabulated data, determine the rate l

[A] (M) [B] (M) Initial Rate (M/s)0.05 0.05 0.0350.10 0.05 0.0700.20 0.10 0.14

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Chemistry

09/20/17

For the reaction 2 A + B → C, the initial rate is measured at several different reactant concentrations. Determine the rate constant for the reaction.

[A](M) [B](M) Initial Rate (M/s)0.05 0.05 0.0350.10 0.05 0.140.20 0.10 1.12

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Scientific Nototion

09/20/17

Given that 1 meter = 1 x 109 nanometers, what is the diameter of the average cell in the human body, in nanometers? Show your work.

I need help with this problem it is really hard and you guys seem to be good at answering questions .

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Chemistry Isomers Inorganic Chemistry

09/20/17

Geometric Isomers related doubt

linear, triangular planar and tetrahedral structures cant exhibit geometrical isomerism? Explain me the reason

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Chemistry

09/20/17

recrystallization chemistry lab

A student performed successive recrystallizations on an impure mixture where there was a 10% by weight impurity. After one recrystallization, she obtained 80% of the original weight of crystals... more

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Algebra1 Rate Convertion

09/20/17

a sheet of glass has a density of 2.5 g/cm cubed , convert to kg/m cubed

please help, im so confused

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Other

09/19/17

Find the cost per ounce of a sunscreen made from 130oz of lotion that cost $3.47 per ounce and 80oz of lotion that cost $12.29 per ounce

$____per ounce

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Math

09/19/17

brenda put 188ml into a graduated cylinder.Then he inserted a toy and the volume went up to 218ml.What was the volume of the toy?

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Question regarding enzyme kinetics

Question involving enzyme kinetics

All phase changes require the addition of heat

the density of mercury is 13.53 g/cm^3. what is the density in lbs/gallon

Chemistry question

why the change in the calcium oxalate equilibrium is produced?

Work out the average of texts sent per minute and per hour.

A 30% salt solution is prepared by mixing a 20% salt solution and 45% salt solution. How many litres of each must be used to produce 60 L of the 30% salt ?

I am writing a paper and I have to cite

What is the molar volume at NTP and STP ? In a book its written both are 22.4L how come ?

PLEASE HELP ME ON THIS QUESTION

In stationary phase the lower the temperature the faster the substance will elute

I am trying to determine what the length and width are of raised planters.

How many 2.5 inch by 6 inch tiles will fit on a back splash that is 2.5 feet tall and 8 feet long?

A mixture weighing 30.500 g contained 8.500 g NH4Cl, 21.250g SIO2, with the remainder being NaCl. Find the percent, by weight, of each component.

A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at

23. What is the rate of change of the concentration of N2O (that is, Δ[N2O]/Δt)? 2 N2O(g) → 2 N2(g) + O2(g)

For the reaction 2 A + B → C, the initial rate is measured at several different reactant concentrations. From the resulting tabulated data, determine the rate l

For the reaction 2 A + B → C, the initial rate is measured at several different reactant concentrations. Determine the rate constant for the reaction.

Given that 1 meter = 1 x 109 nanometers, what is the diameter of the average cell in the human body, in nanometers? Show your work.

Geometric Isomers related doubt

recrystallization chemistry lab

a sheet of glass has a density of 2.5 g/cm cubed , convert to kg/m cubed

Find the cost per ounce of a sunscreen made from 130oz of lotion that cost $3.47 per ounce and 80oz of lotion that cost $12.29 per ounce

brenda put 188ml into a graduated cylinder.Then he inserted a toy and the volume went up to 218ml.What was the volume of the toy?

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