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4 years ago

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Lisa places a substance into a jar. The substance does not change shape to match the shape of the jar.What is the state of matte

r of the substance?

1 answer:

mart [117]4 years ago

7 0

The matter is solid, a liquid or a gas would change shape to match the jar.

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Need help on this question

arsen [322]

Answer:

its b

Explanation:

5 0

3 years ago

Read 2 more answers

A current of 2.50 amps is passed through an electrolytic cell containing a solution of M(NO3)2, where M represents an unidentifi

Elina [12.6K]

Answer:

The chemical symbol will be " $_{29}^{63.5}\textrm{Cu}$ ".

Explanation:

The given values are:

Current,

I = 2.50 amps

Time,

t = 2 hr

or,

= 7200 sec

Metal deposited,

W = 5.93 gm

As we know,

⇒ $W=Z\times i\times t$

or,

⇒ $Z=\frac{W}{i\times t}$

On putting the given values, we get

⇒ $=\frac{5.93}{2.5\times 7200}$

⇒ $=3.2945\times 10^{-4}$

hence,

⇒ $Atomic \ mass=Z\times electrons\times 96500$

⇒ $=3.2945\times 10^{-4}\times 2\times 96500$

⇒ $=63.5$

Thus the above is the right answer.

7 0

3 years ago

Give a sketch illustrating the different types of interconversion<br>

nadya68 [22]

Answer:

there you go

Explanation:

6 0

3 years ago

Law of electrolysis was given by<br>a.lamark. b.Ostwald<br>c.Faraday. d.Arrhenius<br>

Brrunno [24]

Law of electrolysis was given by Faraday.

He discovered that,the amount of chemical change or decomposition is exactly proportional to the quantity of electricity that passes in solution,

4 0

3 years ago

What is the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35

prohojiy [21]

Answer:

Explanation:

2 HCl(g) + Mg(s) → MgCl₂(s) + H₂(g)

Let's calculate the quantity of mole of produced hydrogen with the Ideal Gases Law

P . V = n . R .T

2.19 atm . 6.82L = n . 0.082 . 308K

(2.19 atm . 6.82L) / (0.082 . 308K) = n

0.591 mol = n

1 mol of H₂ gas came from 2 mol of hydrochloric, so, 0.591 mol came from the double of mole

0.591 .2 = 1.182 mole of acid.

Molar mass of HCl = 36.45 g/m

1.182 mole are (36.45 g/m . 1.182g ) contained in 43.1 g

Density HCl = HCl mass / HCl volume

0,118 g/mL = 43.1 g / HCl volume

43.1 g / 0.118 g/mL = 365.3 mL (HCl volume)

5 0

3 years ago