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Basile [38]
3 years ago
13

If you can solve these thank you I will mark brainly.ASAP

Chemistry
2 answers:
Naily [24]3 years ago
7 0

Answer:Number 2 might be the second one

Explanation:

ipn [44]3 years ago
6 0
1. A substance with a definite mass but no definite volume or shape is a gas. Gas particles are spread far apart from one another, and they are constantly in motion such that they will fill up any container that they’re in. So the correct answer for 1 would be the first answer choice.

2. A liquid has a definite mass (all of the common states of matter have definite mass) and it has a definite volume: The particles of a given mass of liquid will occupy the same amount of space regardless of the shape of the liquid’s container; it likewise follows that a liquid does not have a definite shape. So, while one liter of water can fill and take the “shape” of a bowl or a bottle, there will always be one liter of water in each. So, the correct answer here would be the fourth answer choice.

3. A solid has a definite mass, a definite shape, and a definite volume precisely because its particles are not free to zip around freely (or rapidly). So the fourth statement is not true, and thus the fourth answer choice would be the correct answer here.
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Escriba las fórmulas semi desarrollada y global correspondientes a: 2,3-dimetil-1-penteno
hammer [34]

Answer:

En la imagen adjunta.

Explanation:

Hola.

En este caso, debemos recordar que la fórmula semi desarrollada se relaciona con la fórmula estructural del compuesto orgánico a representar; de este modo, primeramente encontramos una cadena de cinco carbonos con un doble enlace en el primer carbono y dos radicales metil tanto en el segundo como en el tercer carbono. Por otro lado, la formula global muestra el tipo y número de átomos presentes en el compuesto, que para el dado, son siete átomos de carbono y catorce de oxígeno, según se puede observar en la imagen adjunta.

¡Saludos!

7 0
4 years ago
Can someone please answer this science question it’s due tonight!
love history [14]

Answer:

Hope this helps you!

Explanation:

Include big outside heaters and inside heaters to maintain warm

Also wear special clothes to keep body warmth

7 0
3 years ago
The half-life of 42K is 12.4 hours. How much of a 750.0-gram sample is left after 62.0 hours?
Illusion [34]

Answer: 23 g

Explanation:

Amountafter = Amountbefore * (1/2)^(t/thalf)

Amountafter = (750 grams) * (1/2)^(62.0 hours/12.4 hours)

Amountafter = 23.4375 grams

750 has 2 significant digits

12.4 and 62.0 have 3 significant digits

So we take the lower of 2 significant digits:

23 grams

4 0
3 years ago
Use the periodic table to find the number of valence electrons for calcium (Ca) aluminum (Al) rubidium (Rb) oxygen (O) sulfur (S
fgiga [73]

Answer:

Calcium (Ca) => 2

Aluminium (Al) => 3

Rubidium (Rb) => 2

Oxygen (O) => 2

Sulphur (S) => 2

Iodine (I) => 1

<em><u>Formulae</u></em>

<em>Calcium</em><em> </em><em>oxide</em><em> </em><em>:</em><em> </em>CaO

<em>Alumin</em><em>ium</em><em> </em><em>iodide</em><em> </em><em>:</em><em> </em>AlI3

<em>Rubidi</em><em>um</em><em> </em><em>sulphide</em><em> </em><em>:</em><em> </em>RbS

<em>Alum</em><em>inium</em><em> </em><em>oxide</em><em> </em><em>:</em><em> </em>Al2O3

4 0
3 years ago
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Drupady [299]

The answer is B.) Energy directly from the sun to both producers and consumers.

8 0
3 years ago
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