A substance in the solid phase (state) of matter has A.a definite shape and a definite volume

B.a definite shape,but no definite volume

C.No definite shape,but a definite volume

D.no definite shape and no definite volume

Answers

Answer 1

Answer:

A substance in the solid phase (state) of matter has a definite shape and a definite volume.

What is volume?

Volume is the amount of space taken up by an object, while capacity is the measure of an object's ability to hold a substance, like a solid, a liquid or a gas. Volume is measured in cubic units, while capacity can be measured in almost every other unit, including litres, gallons, pounds, etc.

Matter in the solid-state maintains a fixed volume and shape, with component particles (atoms, molecules or ions) close together and fixed into place.

Hence, option A is correct.

Learn more about phases here:

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Answer 2

Answer: A. Would be your answer

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A 93-L sample of dry air is cooled from 145 oC to -22 oC at a constant pressure of 2.85 atmospheres). What is the final volume?

Answers

Answer:

56 L

Explanation:

We're dealing with a gas in this problem. We may, therefore, apply the ideal gas law for this problem:

$pV = nRT$

We now that we have a constant pressure. Besides, R, the ideal gas law constant, is also a constant number. Let's rearrange the equation so that we have all constant variables on the right and all changing variables on the left:

$(V)/(T) = (nR)/(p) = const$

This means the ratio between volume and temperature is a constant number. For two conditions:

$(V_1)/(T_1) = (V_2)/(T_2)$

Given initial volume of:

$V_1 = 93 L$

Convert the initial temperature into Kelvin:

$T_1 = 145^oC + 273.15 K = 418.15 K$

Convert the final temperature into Kelvin:

$T_2 = -22^oC + 273.15 K = 251.15 K$

Rearrange the equation for the final volume:

$V_2 = V_1 \cdot (T_2)/(T_1) = 93 L\cdot (251.15 K)/(418.15 K) = 56 L$

Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What is one advantage that asexual organisms have that helps them to overcome these disadvantages?They never need to sleep.
A They are able to find food easier.
B They have higher reproductive rates.
C They use energy more efficiently.

Answers

Answer: B They have higher reproductive rates.

Asexual reproduction is a mode of reproduction, which takes place in simple organisms. This mode of reproduction does not require the formation of gametes by the living organisms. The offsprings produced are usually larger in number as compared to those produced in the sexual mode of reproduction. The offsprings are genetically identical to the parent organisms.

Although, the life span of the asexually reproducing organisms is low, and the organisms produced are typically shorter than the sexually reproducing organisms. But, they have higher reproductive rates than sexually reproducing organisms. This because of the fact that these organisms are simple. They do not require to form or develop sex cells like sexually reproducing organisms. They just require favorable environment conditions to develop a new organism. For example, budding in yeast, the bud develops as an outgrowth on mother yest cell, which detaches in maturity and germinate to form new yeast organism.

They have higher reproductive rates and therefore the young have more of a chnce of surviving

I need help with Number 63

Answers

Isotopes are variants of an element which have differing number of neutrons. So, yes, because all of them have the same atomic number, meaning they are all Mg, however they all have differing atomic masses meaning different number of neutrons.

What coefficient values will balance the reaction?Mg + O2 ?MgO
A. 1,2,1
B. 1,2,2
C. 2,1,2
D. 1,1,2

Answers

Answer:

Explanation:

1,2,2

we O2 then we supposed to balance the one that will give Mg+O2-2MgO

Which Gender Has Better Reflexs

Answers

As many studies have shown that men have faster reflexes then woman, many woman can have better reflexes then men. It just depends on your genes and dna and all the things that make you be good at things.

men do because what research says is that men have more muscles then women

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