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Nadusha1986 [10]
2 years ago
13

Mia is having a picnic. she will provide orange juice unsweetened tea, and sodas. She plans to make peanut butter sandwiches and

trail mix. She will also make some gelatin with bananas in it. Which picnic items are mixtures? Which are solutions? Explain your choices.
Chemistry
2 answers:
maw [93]2 years ago
7 0
Everything is a mixture bc they all have compounds
Alchen [17]2 years ago
5 0

Everying thing is mixture as everything have different compounds

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Using the measurements in the table, determine which unidentified metal has the lowest density
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C is the correct answer because density is mass per unit volume and when you divide it we that volume is greater than mass so density is less density density is directly proportional to Mass Density is inversely proportional to volume
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A gas with a volume of 4.0L at a pressure of 205 kPa is allowed to expand to a volume of 12000 mL. What is the pressure in atmos
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Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}     (At constant temperature and number of moles)

P_1V_1=P_2V_2  

where,

P_1 = initial pressure of gas  = 205 kPa

P_2 = final pressure of gas = ?

V_1 = initial volume of gas  = 4.0 L

V_2 = final volume of gas = 12000 ml = 12 L    (1L=1000ml)  

205\times 4.0=P_2\times 12  

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A gaseous mixture of O2 and N2 contains 37.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the tot
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mass of oxygen = (100-37.8) g = 62.2 g

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p_A=\chi_A\times P_T

p_{O_2} = partial pressure of O_2 = ?

\chi_{O_2} = mole fraction of O_2=\frac{\text{Moles of }O_2}{\text{Total moles}}

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{\text{Moles of }N_2}=\frac{\text {Given mass}}{\text {Molar mass}}=\frac{37.8g}{28g/mol}=1.35moles

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