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lbvjy [14]
3 years ago
8

List the experiment procedures. Some steps have been filled in for you. You may need to adjust the numbers to match the steps yo

u decide on. 1. Identify the variables. 2. Write out your hypothesis in an if/then format. 3. Gather your materials. 4. 5. 6. 7. 8. 9. Analyze the data. 10. Analyze the data. Data Analysis Label a data table so that the experimenter can record observations for the sand and water temperatures at various points.
Chemistry
2 answers:
sergeinik [125]3 years ago
7 0

Answer:

I sadly don’t know what 7 & 8 is, but I hope this helps!

Explanation:

Quizlet.

Whitepunk [10]3 years ago
4 0

Answer:all u need to do is list what u are doing. Do u do FLVS? cuz tht was in ... have been filled in for you. You may need to adjust the numbers to match the steps you decide on. 1. Identify the variables. 2. Write out your hypothesis in an if/then format. 3.Gather your materials. 4. 5.

Explanation:

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Find the volume of 56.0 grams of O2
N76 [4]

Answer:

39.2 L at STP

Explanation:

Convert the grams to moles first by dividing 56.0 by the molar mass of O2 (32.0) then convert to volume by multiplying by 22.4.

= 39.2 L

5 0
3 years ago
The lewis dot structure for CSBr2?
AfilCa [17]

Answer:

See attached picture.

Explanation:

Hello!

In this case, by considering that the carbon has four valence electrons as it is in group IVA, sulfur has six valence electrons as it is in group VIA and bromine has seven valence electrons as it is in group VIIA we infer that the carbon is the central atom in CSBr2 so one double bond between carbon and sulfur makes it complete the octet and two carbon-to-bromine bonds are formed in order to complete the octets of both carbon and bromine as shown on the attached picture.

Best regards!

3 0
3 years ago
If you need to extract a 50 ml aqueous solution with 50 ml of dichloromethane, what is the minimum size of a separatory funnel y
tatuchka [14]

The dichloromethane (DCM) has less density than water and also the polarity of water is much more than DCM. So the mixture of water and dichloromethane will always be a heterogeneous mixture. In the mixture dichloromethane will be always up of the water layer. The volume of the separatory funnel which contains the mixture of DCM and water must have to be more than the total volume of the liquids thus the volume of the funnel will be more than (50+50) = 100mL.

The caution have to consider during the separation are-

1. The separatory funnel have to shake well with lid and have to settle down for some times until the two liquid separated.

2. The lid should be open very slowly as the vapor pressure of DCM is more and it will float on the water.

3. After this the stopcock should be opened and slowly the water will come out first followed by DCM.      

7 0
3 years ago
A sample of oxygen gas (O2) has a volume of 7.51 L at a temperature of 19°C and a pressure of 1.38 atm. Calculate the moles of O
Maslowich

Answer: 0.43molO₂

Explanation:

The ideal gas law for moles is n=\frac{PV}{RT}. If you did not know, R is the ideal gas constant, 0.0821\frac{L*atm}{mol*K}.

Since the temperature must be in Kelvin, we must convert our given temperature from ℃ to K. 19C+273=292K

Now that we have the temperature converted to Kelvin, we can plug in our information to the ideal gas law for the number of moles.

n=\frac{PV}{RT}

n=\frac{1.38atm*7.51L}{0.0821\frac{L*atm}{mol*K} *292K} =0.43molO_{2}

n=0.43molO_{2}

Therefore, the number of moles is 0.43molO₂.

I hope this helps! Pls mark brainliest!! :)

8 0
2 years ago
Can someone help me with 2 and 5 please?
BartSMP [9]

Answer:

I thought that we were made to be she's my ex to see by God that we where he he

8 0
3 years ago
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