02/04/19

Milk of magnesia, a suspension of Mg(OH)2 in water, reacts with stomach acid (HCl) in a neutralization reaction.
1.Milk of magnesia, a suspension of Mg(OH)2in water, reacts with stomach acid (HCl) in a neutralization reaction.Mg(OH)2(s) + 2 HCl(aq) −→2 H2O(l) + MgCl2(aq) What mass of MgCl2 will be produced... more
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02/04/19

If 0.500 mole of Na+ cations are available in aqueous solution, how many grams of Na2SO4 can form when the water is boiled off (assuming plenty of sulphate ions are available)?

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02/04/19

In a graduated cylinder, the volume of water is 1.5 L. a piece of rock was thrown into it causing the level of water to rise to 2.5 L. What is the volume of the rock?

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02/04/19

Suppose you have 49.6 mL of a solution of HF. You titrate it with a 0.10 M solution of Al(OH)3 and use 15.3 mL to reach the endpoint.

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02/03/19

How long will it take to fill a cube-shaped vat with edge length 18.2 ft with a certain liquid (d=0.890 g/mL) if it is spilling out of the hose at 11046.9 g/s? (1.00 in = 2.54E0 cm)
How long will it take to fill a cube-shaped vat with edge length 18.2 ft with a certain liquid (d=0.890 g/mL) if it is spilling out of the hose at 11046.9 g/s?(1.00 in = 2.54E0... more
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02/03/19

The distance from the earth to the moon is 2.4 x 10 5 mi. Light (and radiowaves) travel at 3.0 x 10 10 cm/sec. How long does it take for a radio signal to reach the moon?
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02/03/19

which of the following pairs has elements with same no. Of electron

which of the following pairs has elements with same no. Of electrons ?(A)Ne and Na(B) Al and Si(C)C and F(D)Mg and S
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02/03/19

Calculate the approximate volume of the NaOH solution that will be needed to neutralize approximately 0.800 g of KHC8H4O4.
Calculate the approximate volume of the NaOH solution that will be needed to neutralize approximately 0.800 g of KHC8H4O4.I have no idea how to solve this question. please teach me how to do this... more
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02/02/19

A doctor has ordered 225 mg of morphine. It is only available as a 0.40 g/mL solution. How many mL of solution are required?

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02/02/19

A solution consisting of 285 mg of dopamine in 30 mL of solution is administered at a rate of 8 ​ml/hr. What is the flow rate in mg of dopamine per hour
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02/02/19

college algebra
The manager of a store that specializes in selling tea decides to experiment with a new blend. She will mix some Earl Grey tea that sells for $ 6$6 per pound with some Orange Pekoe tea that sells... more
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02/01/19

1.7 moles of ammonia (NH3) is formed in the following reaction. How many grams of hydrogen reacted?
i dont know what to do because i tried to solve it but i didnt get it at all
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02/01/19

If a 20.0 g object at a temperature of 35.0∘C has a specific heat of 2.89Jg∘C, and it releases 450. J into the atmosphere, what will be the final temperature of the object?
If a 20.0 g object at a temperature of 35.0∘C has a specific heat of 2.89Jg∘C, and it releases 450. J into the atmosphere, what will be the final temperature of the object?
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02/01/19

What volume of water (H2O), in milliliters, can vaporize at room temperature given 150 kJ of energy? (For water, ΔHvap=44.01kJmol). Assume the density of water is exactly 1
What volume of water (H2O), in milliliters, can vaporize at room temperature given 150 kJ of energy? (For water, ΔHvap=44.01kJmol). Assume the density of water is exactly 1 g/ml
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02/01/19

why is the product smaller when i multiply a fraction by another fraction
Like my teacher asked if the number will get larger and we said yes but we are wrong it gets smaller but how does it get smaller does it get smaller because your dividing or ..............
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02/01/19

If 30.0g of sodium chloride are reacted with excess sulfuric acid , how many grams of sodium sulfate are produced? NaCl + H2SO4 = Na2SO4 + HCl
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02/01/19

You decide that you want to make a sample of A12o3 with a mass of 450.0 grams. How many grams of A1 would you need and how many grams of O2 would you need?
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02/01/19

Chemistry help need by 10:00pm!!!!!!!!
An underground cavern contains 2.24×10^6 liters of methane gas at a pressure of 1.50×10^3 kPa and a temperature of 315 Calvin. How many grams of CH4 are in the cavern? Put pressure in... more
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01/31/19

Chem 2 Diffusion Lab
Methane gas diffuses from a container in 37 seconds. a second alkane diffuses from the container in 78.5 seconds. what is the mass and identity of the second alkane? (Hint: the distance traveled is... more
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01/31/19

What is the capilary rise of ethanol in a glass tube with a 0.1 mm radius if the surface tension of ethanol is 0.032Jm2 and the density of ethanol is 0.71gcm3
What is the capilary rise of ethanol in a glass tube with a 0.1 mm radius if the surface tension of ethanol is 0.032J/m2 and the density of ethanol is 0.71g/cm3
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01/31/19

If there are 28 students in a class, and there are 6 more boys than girls then howmany girls are there
How would i write a linear equation for this problem
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01/31/19

What is the final temperature?
a gas at 40°c has a volume of 34 liters and a pressure of 1700 mmHg. It is compressed to a volume of 15 liters and a pressure of 3000 mmHg. what is the final temperature?
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01/31/19

If a person was using 1.1 mol of fluorine, how many mol of sodium fluoride could they produce from this balanced equation?
If a person was using 1.1 mol of fluorine, how many mol of sodium fluoride could they produce from this balanced equation?
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01/31/19

Chromium 48 decays, after 6 have lives what’s fraction of the original nuclei would remain
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01/31/19

1. Use the molar volume of a gas, at STP, if a sample of O2 in occupies 25.00 L at STP, how many moles of O2 in the sample?
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