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laila [671]
2 years ago
5

MULTIPLE CHOICE QUESTION

Chemistry
1 answer:
Naddika [18.5K]2 years ago
4 0

Answer:

rust

Explanation:

Chemical rxn of iron and oxygen = rust

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which words best describe the following characteristic? 69.2 kg of a substance? a. extensive, quantitative b. intensive, qualita
marshall27 [118]

The correct answer is A. Extensive, quantitative

Explanation:

A property is classified as extensive if it varies with the amount of the substance; this applies to mass, which is measured in grams or kilograms, because depending on the size of the sample the mass changes, therefore "69.2 kg" is an extensive characteristic. Besides this, quantitative characteristics or properties are those that can be measured through numbers; this also applies to mass because a specific number of grams or kilograms shows the exact mass in the substance, in this case, the value is 69.2 kg. Thus, this characteristic is both extensive and quantitative.

4 0
3 years ago
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3) The acronym m/s stands for?
algol13

Answer:

B-meters per second

Explanation:

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4 years ago
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Lila is a track and field athlete. She must complete four laps around a circular track. The track itself measures 400 meters fro
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Answer:

its D Her speed is 4.4 m/s, and her velocity is 4.4 m/s.

Explanation:

i took the quiz

5 0
4 years ago
Given the two reactions PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq), K3 = 1.89×10−10, and AgCl(aq)⇌Ag+(aq)+Cl−(aq), K4 = 1.25×10−4, what is the
Sergio [31]

Answer:

1.2\times 10^{-2}

Explanation:

The given reactions are:

PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq)     K_3 = 1.89\times 10^{-10}

AgCl(aq)⇌Ag+(aq)+Cl−(aq)           K_4 = 1.25\times 10^{-4}

Required reaction is:

PbCl2(aq)+2Ag+(aq)⇌2AgCl(aq)+Pb2+(aq)

K_f = \frac{K_3}{K_4^2}\\=\frac{1.89\times 10^{-10}}{1.25\times 10^{-4}}^2\\=1.2\times 10^{-2}

4 0
4 years ago
2×21=how many are there​
MArishka [77]

Answer: 42

Explanation:

8 0
3 years ago
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