chelsy

Assume that you were given samples of two white, crystalline compounds, one of them ionic and one covalent. Describe how you might tell which is which. I just can't seem to figure out, can you please help. Thanks.

2 moles of aqueous Barium Nitrate is combined with 1 mole of aqueous Sodium Sulfate. Assuming 100% yield, what mass of Barium Sulfate precipitate would be produced. 1. 175.043 grams 2. 233.391 grams 3. 466.781 grams 4. 116.953 grams

50 g of NaCL is dissolved into 800 ml H2O. i need to know if is molarity, g/equivalent, freezing point depression, boiling point elevation or osmolarity. nad how to resolve please give me a hand

suppose you made a buffer solution that was 0.050M in both HC2H3O2 and NaC2H3O2.Would the pH changes resulting from the addition of 0.1 M HCL solution to this buffer solution be the same as those you observed in experiment?

The density of water at 30.0 °C is 0.9956 g/mL. If the specific gravity of acetic acid is 0.1040 at 30.0 °C, what is the density of acetic acid at 30.0 °C?

a motorboat, which can travel at 20 miles per hour in still water, takes 3/5 as long to travel downstream on a river from a to b, as to return. Find the rate of the rivers current.

at how many minutes after 3pm will the minute hand of a clock overtake the hour hand?

two airplane fly toward each other from points 900 miles apart, at the rate, per hour, of 300 miles and 250 miles. when will they meet if they start at the same instant?

yeah i agree with this thank you so much.

number 10 is wrong its endocrine negative feed back

gudkah