CHEMISTRY MIDDLE SCHOOL

HSiCl3+H2O=H10Si10O15+HCl

Answers

Answer 1

Answer:

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

Explanation:

Step 1: To make Si equal on both sides. put 10 in front of HSiCl3

10 HSiCl3+ H2O →H10Si10O15+ HCl

Step 2: By putting 30 in front of HCl, Cl can be balanced

10 HSiCl3+ H2O →H10Si10O15+ 30 HCl

Step 3: Now, balance O by putting 15 in front of H2O

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

Hence the balanced equation is:

10 HSiCl3+ 15 H2O→H10Si10O15+ 30 HCl

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2C4H10 + 13O2 -----> 8CO2 + 10H2OIf 3000 grams of C4H10 react according to this equation, and the actual yield for water is a mass of 1300 grams, what is the percent yield?
Can someone please help me in number 1 and 2 thankss
Which of the following can be caused by geologic plate movements?
The temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substance's _______. A. sublimation point B. boiling point C. melting point D. freezing point

Which of these lists bodies in order, from CLOSEST to FURTHEST from the Earth? A) moon, sun, near edge of milky way, center of milky way B) near edge of milky way, moon, center of milky way, sun C) sun, moon, center of milky way, near edge of the milky way D) moon, sun, center of milky way, near edge of the milky way

Answers

The answer option which lists celestial bodies in order, from closest to furthest from the Earth is: A) moon, sun, near edge of milky way, center of milky way.

A planet can be defined as a large celestial body that has sufficient mass to allow for self-gravity and make it assume a nearly circular shape (hydrostatic equilibrium).

Basically, a planet revolves in an orbit around the Sun in the solar system and has a cleared neighborhood.

In Science, planets are broadly grouped into two (2) main types and these are;

I. Inner planets: these planets are closest to the Sun and comprises Mars, Mercury, Venus, and Earth.

II. Outer planets: these planets are mainly located beyond the asteroid belt and includes Uranus, Jupiter, Neptune, and Saturn, from left to right of the solar system.

On the other hand, a list of the celestial bodies in order, from closest to furthest from planet Earth are:

Moon: its distance from planet Earth is about 405,696 kilometers.

Sun: its distance from planet Earth is about 149,597,870 kilometers.

Near edge of milky way: its distance from planet Earth is about 1,000,000,000,000,000,000 kilometers.

Center of milky way: is the farthest from planet Earth.

A) would be correct.

The moon is right next to Earth.

Earth orbits around the sun.

Our solar system is at the edge of the Milky Way. So the edge of the Milky Way would be nearer than the center.

An empty party balloon will float to the ceiling of a room once it is filled with helium.A. What does this tell you about the density of air in the room compared to the density of helium?

B. For the balloon to float in air, what two factors might have changed about the balloon?

Answer those two questions of you know the answer.

Answers

Helium is a gas composed of itself, were air is composed of Oxygen and Nitrogen making the air more dense than the helium making it float to find other gases

Two factors to change are Air pressure (due to the balloon moving ) and the helium making the balloon rise.

That's about all I can explain...hope this helps >.<

Which elements are metalloids? Check all that apply.boron
tungsten
aluminum
bismuth
silicon
tellurium

Answers

Answer:

Boron
Silicon
Tellurium

Explanation:

Elements in the periodic table are either metals, non-metals or metalloids.
Metals are elements that react by losing electron(s) to attain an octet configuration. They occupy groups I, II and III of the periodic table and the transition metals.
Non-metals, on the other hand, are elements that react by gaining electron(s) to attain a stable configuration. Examples include halogens and noble gases among others.
Metalloids are elements in the periodic table that have the properties of both metals and non-metals.
Other examples of metalloids are arsenic, tellurium, germanium and polonium.

Answer:

Boron

Silicon

Tellurium

Explanation:

edgenuity

How old is the earth?