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3 years ago

13

What is the meaning for the word acid

2 answers:

Lapatulllka [165]3 years ago

6 0

Acid is a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind.

Sonbull [250]3 years ago

4 0

The word acid means a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind. Hope this helps:3

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Pluto’s diameter is approximately 2370 km, and the diameter of its satellite Charon is 1250 km. Although the distance varies, th

MissTica

Answer:

$r_{cm} = 2520.5 km$

Explanation:

As we know that mass is the product of volume and density

so we will have

$M = \rho V$

here we have

$M = \rho(\frac{4}{3}\pi r^3)$

so we will have

$\frac{M_p}{M_c} = (\frac{r_p}{r_c})^3$

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$r_{cm} = \frac{19700}{\frac{M_p}{M_c} + 1}$

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3 years ago

What best describes the significance of albert einstein's famous equation famous equations e=mc2?

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2. A compression at a constant pressure of 20 kPa is performed on 9.0 moles of an ideal monatomic gas (Cv-1.5R). The compression

Fofino [41]

Answer:

- 4.2 kJ

Explanation:

We shall find out the initial temperature of the gas

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20 X 10³ X .26 / T = 9 X 8.3

T = 69.6 K

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V / T = constant

V₁ / T₁ = V₂ / T₂

.26 / 69.6 = .12 / T₂

T₂ = 32.12 K

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Change in temperature = 69.6 - 32.12

= 37.48 K.

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= - 9 x 1.5 x 8.31 x 37.48 ( Cv = 1.5 R given )

= - 4.2 kJ .

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3 years ago