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4 years ago

12

What type of volcano will most likely form when intermittent eruptions of different intensities take over a long period of time

and layers of ash and lava pile up? A) Cinder volcano B) Composite Volcano C) Cone volcano D) Shield Volcano

1 answer:

PSYCHO15rus [73]4 years ago

6 0

Answer: D shield volcano

Explanation:

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Trichloromethane consists of 10.05% carbon. 0.83% hydrogen and 89.12% chlorine. if uts relative molecular mass is 119.5g . find

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Answer:

C24H2CL213

Explanation:

C

(10.05/100)x119.5

=12x2=24

H

(0.083/100)x119.5

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Cl

(89.12/100)x119.5

=106.5x2=213

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Which piece of evidence would suggest an unknown substance is an ionic compound?

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What is the atomic number for an element with 6 neutrons and a mass number of 10

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$\bold{\huge{\blue{\underline{Answer}}}}$

$\bold{\underline{ Given :- }}$

Atomic number of an element with 6 neutrons and a mass number of 10

$\bold{\underline{ Let's \:Begin}}$

$\sf{We\: know\: that, }$

Atomic number is the number of protons in the nucleus of an atom

$\sf{Whereas ,}$

Mass number is the sum of protons and neutrons in the nucleus of an atom.

$\sf{We\: have \:number \:of \:neutrons = 6 }$

$\sf{ Mass\: number = 10 }$

$\bold{\underline{Therefore}}$

$\sf{ Mass\: number = Protons + neutrons}$

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$\sf{ Protons = 10 - 6}$

$\sf{ Protons = 4 }$

$\sf{ Thus, \: the \: number \: of \: protons \: is \:4}$

$\bold{\underline{ Therefore,\:we\:know\:that, }}$

$\sf{ No\: of\: protons = Atomic \:number }$

$\sf{ 4 = Atomic \:number }$

$\sf { Hence, \:atomic\: number\: of\: the\: element\: is\: 4}$

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2 years ago

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Solid substances are most likely to sublime if they have...?

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Technically the are both right and wrong. Solid substances are most likely to sublime is they have... high vapor pressure and weak intermolecular forces.

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3 years ago

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A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the sameconcentration of s

elixir [45]

Answer: Molarity of a physiological saline solution is 0.15 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

n = moles of solute

$V_s$ =volume of solution in ml

Given : 0.89 g of sodium chloride in 100 ml of solution.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{0.89g}{58.5g/mol}=0.015moles$

Volume of solution = 100 ml

$Molarity=\frac{0.015\times 1000}{100ml}=0.15M$

Molarity of physiological saline solution is 0.15 M

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3 years ago