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3 years ago

Which best describes the process of igneous rock formation?

1 answer:

5 0

Igneous rock formation is when magma from a volcano is spilled onto the earth's surface. When lava erupts onto the Earth's surface, it cools quickly creating an igneous rock.

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Which of these refers to the strength of an acid

garik1379 [7]

Mg is what you measure them in

3 0

3 years ago

Read 2 more answers

A block of material has a volume of 50 cubic centimeters, and a mass of 1,000 grams; what is that object's density?

zhannawk [14.2K]

Answer:

Density = $20\ g/cm^3$

Explanation:

Given that,

Mass of the object, m = 1000 g

Volume of the block, V = 50 cm³

We need to find the density of the object. Density is equal to mass per unit volume.

d = m/V

$d=\dfrac{1000\ g}{50\ cm^3}\\\\=20\ g/cm^3$

So, the density of the object is $20\ g/cm^3$ .

8 0

3 years ago

Describe the appearance of table salt at the macroscopic and atomic levels

Tresset [83]

Table salt is sodium chloride mixed with small amount of potassium iodide (KI), sodium iodide (NaI) or sodium iodate (NaIO₃).
Atomic level - sodium chloride (NaCl) has crystal cubic structure (lattice-type arrangement) with ionic bonds. Sodium is cation with charge 1+ and chlorine is an anion with charge 1-.
Macroscopic level - table salt is colorless crystal, soluble in water with high melting and boiling temperature..

3 0

4 years ago

Phosgene is formed from carbon monoxide and chlorine. At 611 oC, Kc is approximately 16.5 M-1 or L/mol. Calculate Kp (in atm-1)

defon

Answer:

Kp is 0.228/atm

Explanation:

This is the reaction:

CO + Cl₂ → CCl₂O

1 mol of carbon monoxide and 1 mol of chlorine produce 1 mol of phosgene.

Formula for Kp which derivates from Kc is:

Kp = Kc (R.T)ⁿᵇ ⁻ ⁿᵃ

Δп = nb (moles in the products) - nₐ(moles in the reactants)

Δп = 1 - 2 = -1

T is T° in K → T°C + 273 = 611°C +273 = 884K

R → Universal constant gas → 0.082 L.atm/mol.K

We replace the data: Kp = 16.5 L/mol (0.082 . 884K)⁻¹ → 0.228/atm

5 0

4 years ago

The solution set of axequalsb is the set of all vectors of the form wequalspplusbold v subscript h, where bold v subscript h is

ELEN [110]

Answer : Incorrect

Explanation : In the given solution set of Ax = b;
is set of all vectors to form w= p + $V_{h}$
here $V_{h}$ is is any solution of the equation Ax = 0;

this stands to be incorrect, as the correct would only exists when some vector p is found to be like this Ap=b

3 0

4 years ago