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2 years ago

What are some ways to prevent heat energy loss in matter?

Chemistry

2 answers:

ohaa [14]2 years ago

8 0

Answer:

Simple ways to reduce heat loss include

Heat loss through windows can be reduced by using double glazing

Heat loss through walls can be reduced using cavity wall insulation

Heat loss through the roof can be reduced by laying loft insulation

Explanation:

Lera25 [3.4K]2 years ago

5 0

Answer:

Use less heat in your house.

Explanation:

You have blankets in your house, huddle up for a good movie together.

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The alkali earth metal beryllium (Be) engages in a chemical reaction and loses all of its valence electrons.

denpristay [2]

The loss of electron from an results in the formation of cation represented by the positive charge on the element whereas gaining of electron results in the formation of anion represented by the negative charge on the element.

The alkali earth metal beryllium ( $Be$ ) belongs to the second group of the periodic table. The ground state electronic configuration of $Be$ is: $1s^{2}2s^{2}$

From the electronic configuration it is clear that it has 2 valence electrons in its valence shell ( $2s^{2}$ ).

After losing all valence electrons that is 2 electrons from $2s$ orbital. The electronic configuration will be:

$1s^{2}2s^{0}$

Since, lose of electron is represented by positive charge on the element symbol. So, the beryllium will have +2 charge on its symbol as $Be^{2+}$ .

Hence, beryllium will have 2+ charge on it after losing all its valence electrons in the chemical reaction.

6 0

2 years ago

Read 2 more answers

pshichka [43]

Answer:

B) number of electrons

Explanation:

The two species:

K+ and Cl- have the same number of electrons.

A neutral atom of K has 19 electrons

A neutral atom of Cl has 17 electrons

Now,

To form K+, K will have to lose an electron and then the number of electrons becomes 18

To form Cl-, Cl will have to gain an electrons and then the number of electrons becomes 18

So, therefore, the number of electrons on both species is 18

3 0

2 years ago

A science class did an experiment in which two substances were mixed. After 15 minutes, everything looks the same, but the stude

valentinak56 [21]

Answer:

C a chemical reaction formed

Explanation:

if something changes smell and nothing else it is a chemical reaction, every other answer does not make sense

5 0

2 years ago

Read 2 more answers

What is the energy of a photon with a frequency of 9.50 x 1013 Hz?

Taya2010 [7]

Answer:

$\huge{6.295 \times {10}^{ - 20} \: J}$

Explanation:

The energy of the photon can be found by using the formula

E = hf

where

E is the energy

f is the frequency

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question we have

E = 6.626 × 10-³⁴ × 9.5 × 10¹³

We have the final answer as

$6.295 \times {10}^{ - 20} \: J$

Hope this helps you

3 0

2 years ago

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 2N0(g) +02(g) 2NO2 (g) The

Tresset [83]

The question is incomplete, complete question is :

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia:

Step 1 : $4NH_3(g)+5O_2(g)\rightleftharpoons 4NO(g)+6H_2O(g)$

Step 2 : $2NO(g) +O_2(g) \rightleftharpoons 2NO_2 (g)$

The net reaction is:

$4NH_3(g)+7O_2(g)\rightleftharpoons 4NO_2(g)+6H_2O(g)$

Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants $K_1$ and $K_2$ . If you need to include any physical constants, be sure you use their standard symbols