Which statement best describes an antacid? a)An antacid increases the amount of hydrogen ions b)An antacid neutralizes excess hydrogen ions. c)An antacid decreases the level of hydrogen ions.

Answers

Answer 1

Answer:

Answer:

The correct answer is option A, An antacid neutralizes excess hydrogen ions.

Explanation:

Antacid neutralizes the acid in the stomach. These are bases/ alkali's. The reaction between an acid and a base in known as neutralization thereby reducing burning sensations produced by the acid.

The antacid when reaches the stomach form gel like composition that lie on the top of food item in the stomach and prevent the oesophagus from the irritation caused by the acid.

Answer 2

Answer:

Answer: option A

Explanation: ur welcome

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What is a main sequence star?
definition please:)

Answers

Any star that is fusing hydrogen in its core and maintains a stable equilibrium between the inward pressure from gravity and the outward pressure from core nuclear fusion is called the main sequence star.

The main sequence is a continuous and recognisable band of stars in astronomy that may be seen on maps of stellar colour against brightness.

A star produces thermal energy in its dense core area by nuclear fusing hydrogen into helium after condensation and ignition. The star's location on the main sequence at this moment in its existence is mostly based on its mass, but also on factors like its age and chemical makeup.

Main-sequence stars' cores are in a state of hydrostatic equilibrium, where the inward pressure of gravitational collapse from the surrounding layers balances the outward heat pressure of the hot core.

To learn more about main sequence star, click:

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The main sequence star definition is A main sequence star is any star that is fusing hydrogen in its core and has a stable balance of outward pressure from core nuclear fusion and gravitational forces pushing inward. I will also put a picture of the star life cycle linked on my answer hope this helps :)

If a device uses 280 watts of power a day, about how many kilowatt-hours will it use in 30 days?

Answers

Given: 280 watts power a day

Unknown: KwH=?in 30 days
Solution: 280 watt-hours per day/1000x30 days
.28 x 30=n
Answer:8.4 kwh

dont answer 8.4, its wrong

Plato

Questions3 pts
Convert 6.36 x 104 from scientific notation to standard decimal with the correct number of significant digits.

Answers

Answer:

Explanation:

standard decimal form of 6.36*10^4 is

6,3600.0

Any object that has mass and takes up space is considered

Answers

Matter. I don't really know how to explain it. Sorry. But anyways, Hope this helps!

Einstein's famous equation indicates that E=mc^2, where c is the speed of light and m is the object's mass. Given this, what is the SI unit for E?

Answers

Answer: Joules

Explanation:

Einstein's equation is:

$E=mc^(2)$

Where:

$E$ is the energy

$m$ is the mass and its SI unit is kilogram $kg$

$c$ is the speed of light and its SI unit is meters per second $(m)/(s)$

If we input the units in the equation and make the analysis of the units:

$E=kg{((m)/(s))}^(2)=kg (m^(2))/(s^(2))$

Rearranging the units:

$E=kg (m)/(s^(2))m$

As we know 1 Newton is $1 N=kg (m)/(s^(2))$

$E=Nm$

And 1 Joule is $1J=Nm$

$E=J$ This is correct because the Joule is the SI unit for energy

The acceleration due to gravity on the surface of Jupiter is about 2.5 times the acceleration due to gravity on Earth’s surface. What would be the weight of a space probe on the surface of Jupiter?A.2.5 times lighter than on Earth
B.6.25 times heavier than on Earth
C.2.5 times heavier than on Earth
D.6.25 times lighter than on Earth