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Natali5045456 [20]
3 years ago
11

Do all of em 1 to conclusion :) 20 points & brainliest

Chemistry
1 answer:
Anit [1.1K]3 years ago
4 0

Answer:

The metric system is the preferred system of scientific units for several reasons: The majority of countries in the world employ the metric system of measurement. Because metric units are decimal-based, they are easily converted by moving the decimal point.

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Explain why you hear a “whoosh” sound when you open a can containing a carbonated drink. Which gas law applies?
Lana71 [14]

Carbonated drinks have the air under pressure so that carbon bubbles are forced into the drink, keeping it carbonated. So when you open a can, the air under pressure in the can comes out of the can at a high speed, making a "whooshing" sound. The gas law that applies to this concept is the Boyle's Law (PV=k or P1V1=P2V2).

6 0
3 years ago
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Why do we use molecular models to represent atoms? 
Bogdan [553]
The molecular model is physical model of the atomic system used to <span>represent </span>molecules and their processes. It is used to <span>understand </span>chemistry<span> and generating and testing </span>hypotheses and it is the m<span>ost commonly used explicit representation of atoms. </span>
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3 years ago
What is the name of the force exerted by blood on the walls of arteries
Digiron [165]
The name of the force exerted by blood on the wall of the arteries is blood pressure. Blood<span> pressure is the </span>force<span> of </span>blood<span> against the </span>walls<span> of the </span>arteries<span>.
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3 0
3 years ago
Use the measurements in the table to determine which unidentified metal has the highest density.
svet-max [94.6K]
ANSWER: A



EXPLANATION:

THE FORMULA FOR DENSITY IS MASS DIVIDED BY VOLUME.


D= M/V


So divide the mass by the volume.

For A, 122 divided by 10.5 is 11.62

For B, 132 divided by 14.2 is 9.295

For C, 115 divided by 16.1 is 7.143

For D, 126 divided by 12.7 is 9.921


A IS THE ANSWER BECAUSE ITS THE LARGEST AMOUNG THE OTHERS.
6 0
4 years ago
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At 170C, a sample of hydrogen gas occupies 125cm3. What will be the volume at 1000C? =161cm3 If the volume of a given mass of ga
pickupchik [31]

1. V= 161

2. V = 37.3

<h3 /><h3>Further explanation  </h3>

Charles's Law states that  

<em>When the gas pressure is kept constant, the gas volume is proportional to the temperature  </em>

\tt \dfrac{V1}{T1}=\dfrac{V2}{T2}

1.

\tt \dfrac{125}{17+273.15~K}=\dfrac{V2}{100+273.15}\\\\V2=160.7\rightarrow 161~cm^3

2.

\tt \dfrac{27.3}{0+273.15`K}=\dfrac{V2}{100+273.15}\\\\V2=37.3~cm^3

3 0
3 years ago
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