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2 years ago

10

What is the difference between alkali metals and halogens?

2 answers:

Airida [17]2 years ago

4 0

<h3>→soft and reactive metals. </h3>

Explanation:

<h3>Alkali metals are soft and reactive metals. They react vigorously with water and become more reactive. And other hand halogens are reactive non metals. ... Halogens can be solid, liquid, gaseous at room temperature and the melting point increase when they get bigger.</h3>

<h2>#CAREYINGTOLEARN❤️</h2>

alexandr1967 [171]2 years ago

4 0

Explanation:

alkalin metals is the first group in the periodic table

halogen is the 7 group in the periodic table

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A cylinder is filled with 10.0L of gas and a piston is put into it. The initial pressure of the gas is measured to be 96.0kPa. T

Norma-Jean [14]

Answer:

The final pressure of the gas is:- 21.3 kPa

Explanation:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 10.0 L

V₂ = 45.0 L

P₁ = 96.0 kPa

P₂ = ?

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${96.0\ kPa}\times {10.0\ L}={P_2}\times {45.0\ L}$

${P_2}=\frac {{96.0}\times {10.0}}{45.0}\ kPa$

${P_2}=21.3\ kPa$

The final pressure of the gas is:- 21.3 kPa

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3 years ago

Which of the following is a transuranium element?<br> Ra<br> Am<br> Tc<br> Pa

lyudmila [28]

Am - it has an atomic number of 95 which is greater than 92.

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2 years ago

fill in the blank: 1.)the amount of space that matter fills is its.................. 2.)a state of matter with a definite volume

marshall27 [118]

1) mass

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3) liquid

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3 years ago

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Romashka-Z-Leto [24]

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Anton [14]

Answer:

<h2>0.2 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

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f is the force

m is the mass

From the question we have

$a = \frac{1.4}{7} = \frac{1}{5} \\$

We have the final answer as

<h3>0.2 m/s²</h3>

Hope this helps you

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2 years ago

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