CHEMISTRY MIDDLE SCHOOL

What is the ratio of straight haired offspring to curly hair offspring?

Answers

Answer 1

Answer:

Answer:

. If both parents have wavy hair, what is

the phenotype (and genotype) ratio for

their offspring?

A.3:1 (curly to straight)

B.All wavy haired offspring

C. 1:2:1 (curly: wavy: straight)

D.9:3:3:1

Explanation:

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Polished metals have a metallic luster, which means that?

Answers

Metallic luster refers to the way light casts off of a mineral. Polished metals such as gold have a metallic luster, which makes them look bright and shiny, and reflect more light than other minerals. There are also minerals that have metallic luster, but are not shiny or reflect much light, which is called dull metallic luster.

Metallic luster - bright, shiny
Dull metallic luster - not shiny

HSiCl3+H2O=H10Si10O15+HCl

Answers

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

A pea plant had purple flowers. What alleles for flower color could the sex cells carry?

Answers

it could be either PP or Pp

a toothpick, pencil, and log are all the same type of wood. explain which would be most dense. answer

Answers

Explanation:

Density is defined as the mass of a substance present in per unit volume.

Mathematically, Density = $(mass)/(volume)$

As toothpick, pencil and log are all made up of same wood. So, this means that there will be same composition as amount of mass present in per unit volume will be the same.

Therefore, we can conclude that toothpick, pencil and log all of them will have same density.

They are all equally dense because they are made of the same material with the same molecular composition.

Examples of energy being used around your class room

Answers

The statement, that describes the energy being used around your class room is "mechanical energy, heat energy, light energy and sound energy."

What is energy?

Energy is defined by scientists as the ability to perform tasks. Energy is described as the "capacity to accomplish work, which is the ability to apply a force that causes an object to move." It can be potential, kinetic, thermal, electrical, chemical, nuclear, or other. Computers, smart boards, overhead projection machines, lighting, and fans are used in the classroom.

Electrical energy is converted into mechanical energy by an electric fan.

The transfer of charge through the filament in the tubelight heats it up and causes it to glow. The tubelight transforms electrical energy to heat energy and light energy in this manner. When you switch on your computer, electrical energy is converted into sound and light energy. When the computer is turned on, electrical energy is converted to thermal energy.

Hence the correct answer is mechanical energy, heat energy, light energy and sound energy.

Learn more about energy here

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In the average classroom. You have AC and DC energy that flows through the wires and powers your computers, phones, projector (if you have one), the light-bulbs in the ceiling or around the room. Their is potential energy when an object is at rest for example your pencil or desk, There is Kinetic energy when objects are moving for example if you walk around or something is rolling around. You yourself is an example of energy.

Lipid molecules are made of long chains of hydrogen and _________.

Answers

Answer:

Carbon

Explanation:

Lipids consist only or mainly of carbon,hydrogen, and oxygen. Both fats and oils are made up of long chains of carbon atoms that are bonded together. these chains are called fatty acids.

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