All categories

4 years ago

PLEASE HELP

Chemistry

1 answer:

Shkiper50 [21]4 years ago

4 0

5= chemicals
6= hormones
Don't know the other ones.

You might be interested in

Pick the TWO conversions which are exact.

erik [133]

2.204 1.16thoae are the answer

7 0

4 years ago

Read 2 more answers

N and ca can mix with each othe to make compound-explain

postnew [5]

Answer:

Yes, the formed product is calcium nitride, $Ca_3N_2$ .

Explanation:

Hello,

In this case, the answer is yes, since nitrogen in gaseous state is able to react with calcium in solid state to form calcium nitride as shown below:

$N_2+Ca\rightarrow Ca_3N_2$

This is possible since calcium losses two electrons and nitrogen gains three electrons to remain positively and negatively charged respectively, forming the aforementioned ionic compound.

Best regards.

7 0

3 years ago

Im found a tool in his father’s toolbox and was curious about what it is used for. What does this tool do?

uranmaximum [27]

It measures the length

5 0

4 years ago

Read 2 more answers

Radar uses reflected microwaves to detect objects and measure their what?

sertanlavr [38]

It Measures an objects speed and location

3 0

3 years ago

Read 2 more answers

We have an aqueous solution that contains 29% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 242 g/

malfutka [58]

Answer:

The molarity of Z in this solution is 1.80 mol/L

Explanation:

29% (by mass) means that in 100 g of solution, you have 29 grams of solute.

So, by the solution density we can find our volume.

Density = mass / volume

Solution density = mass solution / volume solution

1.5 g/ml = 100 g / volume solution

volume solution = 100 g/ 1..5 g/ml

volume solution = 66.6 mL

So we have just found out that in 66.6 mL, we have 29 g of solute Z, so if we want to know the molarity, we have to find out the mass in 1 L, and afterwards, calculate the moles, we have

1000 mL = 1L

66.6 mL ____ 29 g of solute Z

1000 mL ____ (29 g . 1000 mL)/ 66.6 mL = 435.4 g

With the molar mass (formula weight), we can find out the moles

Mass /Molar mass = Mol

435.4 g /242 g/m = 1.80 mol

Molarity is 1.80 mol/L

4 0

3 years ago