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4 years ago

03 is an example of a what?

Chemistry

1 answer:

Leto [7]4 years ago

3 0

I'm not sure what the question is but 3 is an example of a prime number. I hope this help

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Which term describes the composition of matter shown in Figure E?

elena-14-01-66 [18.8K]

Answer:

Figure E is a compound

Explanation:

Compounds are constructed of 2 different elements

5 0

3 years ago

A sea lab is to be designed to withstand submersion to 150 m, measured from the sea level to the top of the sea lab. Calculate t

Alchen [17]

Answer:

Explanation:

The hydrostatic pressure is defined as the pressure that is exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity, the formula is:

P = ρgh + P₀

Where:

ρ is density (1020kg/m³)

g is gravity (9,8m/s²)

h is depth (150m)

P₀ is the atmspheric pressure (101325 Pa)

Replacing, P = 1'600'725 Pa

I hope it helps!

4 0

3 years ago

Decided whether the bond is likely to be polar or not.

Marizza181 [45]

Answer:

$\begin{gathered} N\equiv N:triple\text{ }covalent\text{ }bond \\ Cl-Cl:covalent\text{ }bond \\ Br-F:Polar \end{gathered}$

Explanation: Nitrogen triple bonding with nitrogen is a covalent bond. Each nitrogen needs three electron to fill its octet so both nitrogen atoms will share the electrons. Chlorine- Chlorine has a covalent bond. Each chlorine atom needs one electron to fill its octet and so both chlorine atoms share. Bromine-Flouride is polar because of the difference in electronegative, flourine being the more electronegative of the two.

3 0

1 year ago

a drop of water weighing 0.48 g condenses on the surface of a 55-g block of aluminum that is initially at 25C. if the heat durin

Gwar [14]

Mass of water vapor is 0.48 gms.

Weight of the aluminium block is 55 gms.

Heat of vaporization of water at 25 degree Celsius is 44.0 kJ/mol.

The amount of heat given by the condensation is:

q = Heat of vaporization × Mass of vapor / Molar mass of steam

= 44.0 kJ/mol ×0.48 g / 18 g/mol

= 1.173 kJ

Now the final temperature of the metal block is calculated by the formula:

q = m × c × ΔT

q = m × c × (T₂ - T₁)

Here, q is the amount of heat, m is the mass of the metal, c is the specif heat of the metal, T₁ is initial temperature, and T₂ is the final temperature.

Now, substituting the values we get,

1.173 kJ = 55 g × 0.903 J/g. ° C * (T₂ - 25°C)

1.173 × 10³ J = 55 g × 0.903 J/g. degree C × (T₂ - 25°C)

1.173 × 10³ = 49.665 ° C * (T₂ - 25° C)

T₂ = 49° C.

Thus, the final temperature of the metal block is 49° C.

8 0

3 years ago

Fill in the blank to balance the following chemical equation:

Andreas93 [3]

2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂

First equation: A. Combustion
Second equation: C. Decomposition
Third equation: E. Double Replacement
Fourth equation: D. Single Replacement
Fifth equation: B. Synthesis

We place a burning splint at the mouth of the test tube and listen for a pop sound. It occurs because Hydrogen gas is explosive. The third option is correct.

7 0

3 years ago