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Angelina_Jolie [31]
3 years ago
15

A popular kitchen appliance

Chemistry
1 answer:
Elenna [48]3 years ago
6 0
Toaster, microwave, coffee makers
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To melt the ice on your driveway, you can use two moles of rock salt (NaCl) or two moles of calcium chloride (CaCl2). Which solu
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I know it would be calcium chloride, not sure why. Maybe someone could answer that part.
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How many moles of Al are needed to react completely with 1.8 mol of FeO?
Tju [1.3M]
<span>1.8 × (2/3) = 1.2

brainliest please

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3 years ago
Given the data you collected for the volume of water displaced by 25.000 g of aluminum, what is the density of aluminum?
vovikov84 [41]

Answer:

C. 2.70 g/mL

Explanation:

Density is the ratio between the mass of a substance and the volume it occupies. Based on Archimedes' volume, the displaced volume of the aluminium is the volume it occupies. To solve this question we must find the difference in volume between initial volume of water = 30mL and final volume of water + aluminium = 39.26mL. This difference is the volume of the aluminium. With its mass we can find density:

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6 0
3 years ago
The pictures below show water in a glass and oil in a beaker.
Archy [21]

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3 0
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Which of the following substances has the highest melting point?
Aleksandr [31]

Nonane (b) has the highest melting point.

-----------------------------

A caveat: I'm assuming that we're dealing with the straight-chain isomers of these alkanes (specifically pentane and nonane). The straight-chain isomer of pentane (<em>n</em>-pentane, CH3-[CH2]3-CH3) has a melting point of -129.8 °C; the straight-chain isomer of nonane (<em>n-</em>nonane, CH3-[CH2]7-CH3) has a melting point of -53.5 °C. The pattern holds as you go down (or up): The more carbon atoms, the higher the melting point. So, in decreasing order of melting points here, you'd have the following: nonane > pentane > butane > ethane.

However, one structural isomer of pentane, neopentane, has a melting point of -16.4 °C, which is <em>higher </em>that the melting point of <em>n</em>-nonane despite neopentane having the same molecular formula as its straight-chain isomer. Of course, you're not to blame for coming up with this question; this is just some extra info to keep in mind.

5 0
3 years ago
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