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3 years ago

Cabbage Juice pH Chart

Chemistry

2 answers:

Mnenie [13.5K]3 years ago

8 0

Answer : The correct option is, (B) bleach

Explanation :

From the given pH chart, we conclude that the pH of the red cabbage juice is 2 that means it is acidic in nature. The red cabbage juice will turn green by the bleach because bleach is the substance which is basic in nature while the other options, milk, vinegar and stomach acid are acidic in nature.

The chemical formula of the bleach is (NaClO) sodium hypochlorite which is strongly basic in nature.

Hence, the correct option is, (B) bleach

natka813 [3]3 years ago

4 0

According to a lab I did in science about ph scale, it was bleach i think.

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An unknown compound has a percent composition of 52.10% potassium, 15.8% carbon, and 32.1% oxygen. The molar mass of the compoun

lianna [129]

To determine the empirical formula and the molecular formula of the compound, we assume a basis of the compound of 100 g. We do as follows:

Mass Moles
K 52.10 52.10/39.10 = 1.33 1.33/1.32 ≈ 1
C 15.8 15.8/12 = 1.32 1.32/1.32 ≈ 1
O 32.1 32.1 / 16 = 2.01 2.01/1.32 ≈ 1.5

The empirical formula would most likely be KCO.
The molecular formula would be K2C2O3.

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3 years ago

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Which of the following factors can be changed for a gas without changing the mass of the gas? Select all that apply.

viva [34]

It is either
volume or pressure

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3 years ago

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1.)Which of these statements correctly compares probeware (such as an electronic temperature probe) to traditional analog tools

Karolina [17]

1. D)
2. I think the correct answer from the choices listed above is option C. The tools that <span>should be used to record the most complete data about a gas are a manometer and a thermometer. Pressure and temperature are important measurements for a gas since from these data we can calculate any other properties of the gas.</span>

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A chemical reaction produces 3.81g potassium chloride (KCl). How many formula units of potassium chloride are there? *Find Molar

Aleks04 [339]

Answer:

The number of formula units in 3.81 g of potassium chloride (KCl) is approximately 3.08 × 10²²

Explanation:

The given parameters is as follows;

The mass of potassium chloride produced in the chemical reaction (KCl) = 3.81 g

The required information = The number of formula units of potassium chloride (KCl)

The Molar Mass of KCl = 74.5513 g/mol

$The \ number \ of \ moles \ of \ a \ substance, n = \dfrac{The \ mass \ of \ the substance}{The \ Molar \ Mass \ of \ the \ substance}$

Therefore, we have;

$The \ number \ of \ moles \ of \ KCl= \dfrac{3.81 \ g}{74.5513 \ g/mol} \approx 0.051106 \ moles$

1 mole of a substance, contains Avogadro's number (6.022 × 10²³) of formula units

Therefore;

0.051106 moles of KCl contains 0.051106 × 6.022 × 10²³ ≈ 3.077588 × 10²² formula units

From which we have, the number of formula units in 3.81 g of potassium chloride (KCl) ≈ 3.08 × 10²² formula units.

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2 years ago

What is the oxidation number of chlorine

sergiy2304 [10]

The oxidation number of chlorine in the Cl-<span> ion is -1.</span>

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