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torisob [31]
2 years ago
15

Pleaseeee helpppp thank youu​

Chemistry
1 answer:
Gemiola [76]2 years ago
5 0

<em>Answer:</em>

<h3><em>Answer:</em><em> </em><em>well</em><em> </em><em> </em></h3>

<em>b. a type of gas is evolved ( hydrogen gas</em><em> )</em>

<em> </em>

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How many grams are in 26 moles of<br> magnesium hydroxide?
WINSTONCH [101]

1,516.31168 grams of Magnesium Hydroxide

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3 years ago
A metal cylinder has a mass of 128g. When the cylinder is submerged into water, it displaces 424ml of water. Calculate the speci
Colt1911 [192]
First, we will need to find the density of the object, take the mass and divide it by the dispplaced water:
128/424 = 0.302 grams/milliliters 
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We get: 302kg/m3
Divide that to the density of water: 1000kg/m3
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7 0
3 years ago
Calculate the pH of a 0.10 M HCN solution that is 0.0070% ionized.
Anastaziya [24]

Answer:

D) 5.15

Explanation:

Step 1: Write the equation for the dissociation of HCN

HCN(aq) ⇄ H⁺(aq) + CN⁻(aq)

Step 2: Calculate [H⁺] at equilibrium

The percent of ionization (α%) is equal to the concentration of one ion at the equilibrium divided by the initial concentration of the acid times 100%.

α% = [H⁺]eq / [HCN]₀ × 100%

[H⁺]eq = α%/100% × [HCN]₀

[H⁺]eq = 0.0070%/100% × 0.10 M

[H⁺]eq = 7.0 × 10⁻⁶ M

Step 3: Calculate the pH

pH = -log [H⁺] = -log 7.0 × 10⁻⁶ = 5.15

7 0
3 years ago
Is the following detente true or false? Paramecia have two nuclei
blondinia [14]
Paramecia have a micro nuclei and a macro nuclei.
6 0
3 years ago
Nonmetals tend to boil at
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Answer:

D) Low temperatures

Explanation:

Non-metals are elements that do not show metallic characteristics like heat conductivity, electrical conductivity, malleability, e.t.c. They are generally less dense and are bonded with weak forces in between their compounds.

The weakness of non-metals is the chief reason why they generally tend to have low boiling point. Only the presence of impurities can cause an elevation in their boiling points.

Metals on the other hand are good heat conductors and they generally have a high boiling point.

7 0
3 years ago
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