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3 years ago

24 grams of iron is added to a graduated

Chemistry

1 answer:

Vanyuwa [196]3 years ago

4 0

Answer:

d = 8 g/mL

Explanation:

Given data:

Mass of metal = 24 g

Volume of eater = 45 mL

Volume of water + metal = 48 mL

Density of iron metal = ?

Solution:

Volume of metal:

Volume of metal = volume of water+ metal - volume of water

Volume of metal = 48 mL - 45 mL

Volume of metal = 3 mL

Density of metal:

d = m/v

d = 24 g/ 3 mL

d = 8 g/mL

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Identify the large brown tectonic plate and whether it is oceanic or continental.

Lady_Fox [76]

I found the image and the given choices. The choices were:

Eurasian, continental
<span>South American, oceanic </span>
<span>African, oceanic </span>
<span>North American, continental
</span>
Based on the image, the large brown tectonic plate is NORTH AMERICA and it is a continental plate.

3 0

3 years ago

Read 2 more answers

1 Srcl (aq) + 1 H,60,(aq) → 2 HCl(aq) + 1 Srso (s)

Mrac [35]

Answer:

Mass = 245.72 g

Explanation:

Given data:

Mass of SrCl₂ react = ?

Mass of H₂SO₄ = 300.0 g

Solution:

SrCl₂ + 2H₂SO₄ → 2HCl + Sr(HSO₄)₂

Number of moles of H₂SO₄:

Number of moles = mass/molar mass

Number of moles = 300.0 g/ 98.079 g/mol

Number of moles = 3.1 mol

Now we will compare the moles of SrCl₂ and H₂SO₄.

H₂SO₄ : SrCl₂

2 : 1

3.1 : 1/2×3.1 = 1.55 mol

Mass of SrCl₂:

Mass = number of moles × molar mass

Mass = 1.55 mol × 158.53 g/mol

Mass = 245.72 g

3 0

3 years ago

Comment se nomme le processus qui permet à une cellule- mere de donner deux cellules-filles

podryga [215]

Answer:

Elle s'appelle la division cellulaire

Explanation:

4 0

3 years ago

Select the structure that corresponds

Lostsunrise [7]

Answer:

C. both

Explanation:

8 0

2 years ago

HC2H3O2 (aq) + H2O (l) ⇔ C2H3O2- (aq) + H3O+ (aq) Ka = 1.8 x 10-5

marin [14]

The concentration of [H3O⁺]=2.86 x 10⁻⁶ M

<h3>Further explanation</h3>

In general, the weak acid ionization reaction

HA (aq) ---> H⁺ (aq) + A⁻ (aq)

Ka's value

$\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}$

Reaction

HC₂H₃O₂ (aq) + H₂O (l) ⇔ (aq) + H₃O⁺ (aq) Ka = 1.8 x 10⁻⁵

$\tt Ka=\dfrac{[C_2H_3O^{2-}[H_3O^+]]}{[HC_2H_3O_2]}}\\\\1.8\times 10^{-5}=\dfrac{0.22\times [H_3O^+]}{0.035}$

[H₃O⁺]=2.86 x 10⁻⁶ M

5 0

3 years ago