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Len [333]
3 years ago
8

(Please help I will give brainliest to whoever answers)Classify each of the following as either an element, compound, mechanical

mixture, solution, colloid or suspension
a. Gold
b. Kool-aid
c. Carbon dioxide
d. Tomato juice
e. Milk
f. Salad
Chemistry
2 answers:
bonufazy [111]3 years ago
7 0

Answer:

element:a,c

compound:f

mechanical mixture

solution:b

colloid:e

suspension:d

Explanation:

elixir [45]3 years ago
3 0

Answer:

I wrote the whole table...

Explanation:

concrete ------Mixture------- Heterogeneous

sugar + pure water -------- Mixture--------- Homogeneous

iron filings (Fe)-------- Pure Substance---------- Element

limestone (CaCO3)-------- Pure Substance-------- Compound

orange juice (w/pulp)------ Mixture---------- Heterogeneous

Pacific Ocean------------- Mixture------------ Heterogeneous

air inside a balloon--------- Mixture------------- Homogeneous

aluminum (Al)---------------- Pure Substance------------ Element

magnesium (Mg)------------- Pure Substance------------- Element

acetylene (C2H2)------------ Pure Substance----------- Compound

tap water in a glass----------- Mixture-------------- Homogeneous

soil-------------- Mixture----------- Heterogeneous

pure water (H2O)---------------- Pure Substance-------------- Compound

chromium (Cr)----------- Pure Substance--------------- Element

Chex mix------------------ Mixture--------------- Heterogeneous

salt + pure water --------- Mixture----------- Homogeneous

benzene (C6H6)----------- Pure Substance----------- Compound

muddy water---------------- Mixture------------- Heterogeneous

brass -------------Mixture----------------- Homogeneous

baking soda------------ Pure Substance--------------- Compound

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Elza [17]

Answer:

Hi, a cheerful teen willing to help,

wishing you a splendiferous day ahead...

Explanation:

1ai. The most dense is Tungsten.

1aii. The least dense is Sodium.

1aiii. The strongest is Tungsten.

1b. All metals conduct electricity.

They are all magnetic except magnetic.

and all solid at room temperature except mercury.

1c. Mercury is a liquid at room temperature.

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What are some HYDROPHILIC materials?
alisha [4.7K]
Including the alkanes, oils , fats and greasy substances in general
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3 years ago
Use one of your experimentally determined values of k, the activation energy you determined, and the Arrhenius equation to calcu
stealth61 [152]

Answer:

Explanation:

Use one of your experimentally determined values of k, the activation energy you determined, and the Arrhenius equation to calculate the value of the rate constant at 25 °C. Alternatively, you can simply extrapolate the straight line plot of ln(k) vs. 1/T in your notebook to 1/298 , read off the value of ln(k), and determine the value of k. Please put your answer in scientific notation. slope=-12070, Ea=100kJ/mol, k= 0.000717(45C), 0.00284(55C), 0.00492(65C), 0.0165(75C), 0.0396(85C)

Explanation;

According to Arrhenius equation:

i.e. ln(k2/k1) = -Ea/R (1/T2 - 1/T1)

Where, k1 = 0.000717, T1 = 45 oC = (45+273) K = 318 K

T2 = 25 oC = (25 + 273) K = 298 K

i.e. ln(k2/0.000717) = -12070 (1/298 - 1/318)

i.e. ln(k2/0.000717) = -2.54738

i.e. k2/0.000717 = e^{-2.54738}

= 0.078286

Therefore, the required constant (k2) = 0.078286 * 0.000717 = 5.61*10^-^5

6 0
3 years ago
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