Thao

This page lists questions and answers that were posted by visitors named Thao.

Questions

The following questions were asked by visitors named Thao.

Which colony was the first to promote religious tolerance

Why did more enslaved Africa live in South Carolina than did white settlers?

How might the colony of Georgia have been different if Oglethorpe's plan had succeeded?

Why were slaves in high demand in the southern colonies?

Calculate the density of bromine if 586g of the substance occupies 188mL

At what tempertures is your element a solid, liquid, or gas? Why or how?

At what tempertures is calcium a solid, liquid, or gas?

How many joules of heat are needed to heat 25.0 g of ice at -5.0 degrees celcius to a final temperature of 40.0 degrees celcius? The specific heat of ice is 2.1 j. Our teacher mention to consider the state of water present at 40.0 degrees celcius which is...

If 12.0 gram of ice are dropped in 150. ml of water at 45 degrees celcius, what is the final temperature of the water?

How many grams of ice are needed to cool 250 ml of water from 75 degrees celcius to 5 degrees celcius?

Ideal gas law question A 4.0 liter container has two gases inside, neon and argon. It is known that at 18 °C, the total pressure of the combined gases is 0.850 atm. If it is known that there are 0.100 moles of neon in the container, how many moles of argo...

A 500 mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmospheres. At what temperature, in °C, will the container fail? Here is what I came up with: T= (1.00mol x 0.0821 LxATM/KxMOL) / 10atm x 0.5L =0.01642K Con...

If the molar volume of an ideal gas is 22.4 L/mol, calculate the theoretical density of hydrogen gas at STP. Not sure what formula to use with this question. Thanks.

If 12.50 mL of 0.324 M HCl is diluted to 250.00 mL, what is the concentration of HCl in the final solution?

You need 123 mL of 0.245 M NaOH solution for a certain experiment, and the only solution available in the lab is 1.252 M. How many mL OF THE 1.252 M NaOH would you need?

Write a balance ionic and net equation for the following: KOH + HC2H3O2 I came up with the following but think this is wrong: KOH + HC2H3O2 -> H2O (l) + KC2H3O2 (aq)

The value of delta H for the reaction below is -1107kj. 2Ba (s) + O2 (g) -> 2BaO (s) How many kJ of heat are released when 5.75 g of BaO (s) is produced? Here is how I approached this problem: 1. Converted 5.75 g of BaO to mol: 5.75g x (1mol BaO/153.3g Ba...

A 25.00 mL sample of seawater taken from a depth of 1000 meters weighs 25.75 g. What is the density of seawater?

100 ml graduated cylinder containing 50 ml of water, drop 100g piece of brass into the water what height does the water rise in the graduated cylinder?

Answers

The following answers were posted by visitors named Thao.

so Ms.Sue is that your answer for this question?

i did but i don't understand that question

Analyze Why did more enslaved Africa live in South Carolina than did white settlers?

Section 1: The Southern Colonies

so how about another questions? Can you help me?

n=174.2 right? How can you do that?

Filling in the equation, here is what I have. Still not coming up with 36 degrees. Please help: [mass ice x heat fusion] 12.0g x 334j/g [mass melted ice x specific heat water x (Tfinal-Tinitial)] 12.0g x 4.18j/g x 45 (Delta T is 45 because temp of ice fro...

After some sleep, i was able to come up with the following. It's still not 36 degrees, but close. Can some check my calculation? [mass ice x heat fusion] + [mass melted ice x specific heat water x (Tfinal-Tinitial)] + [mass water x specific heat water x (...

Makes perfect sense. Thank you.

I was giving the answer key with the correct answer at 336 C. Now i'm really confused... Can someone explain.

I recalculated the problem and got it correct. Thank you.

I came up with this but not sure if it's right: D = 1mol/22.4L x 2.02g/1mol = 0.0902g/L