Which of the following is a CHEMICAL CHANGE?
A- Buttering Toast
B- Melting ice Cream
C-An egg gives off a rotten smell
D-sugar is dissolved into water
E- baking soda mixed with vinegar forms bubbles
F- boiling water forms bubbles
G-Iron turns red as it rusts
H-Iron turns red as it is heated​

Answers

Answer 1

Answer:

G, but I think that theres more than one answer


Related Questions

PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! You think that although there are some differences, the human nervous system is similar to a computer. You're friend says, "No way! A computer is just metal, wires, and plastic." Develop an argument that would persuade your friend that there are similarities between these two systems. Include specific examples and evidence to support your position.

Answers

Answer:

We have nerves that are just like wires that run through our body that tells us what is going on and what to do about it. The hard dive like in a computer is our brain, which is made up of three parts that control things like coordination, movement, involuntary, and voluntary movement. The sensory numerous just like the keys in a computer pick up what we are doing in life.

Explanation:

How many grams of glucose are in 4.5x1023 molecules of glucose?:

Answers

Answer:

[tex].5865 \\ \\ \\ \\ \\ \5865[/tex]

[tex] \\ \\ 5865 \inf \inft \cos( \\ \) [/tex]

Niels Bohr’s model of the atom helped to explain

Answers

Answer:

a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits.

Explanation:

6H2 represents how many atoms of hydrogen?

Answers

Answer:

i think its 12, but i'm not 100% sure

Explanation:

If the momentum of a car is reduced by half, assuming mass did not change, what must also have been reduced by half?

Answers

Answer:

Velocity is halved

Explanation:

Momentum is contingent on mass and velocity. The quantity of motion in a body is called the momentum of the body.

  Momentum  = mass x velocity

Now, if mass does not change and momentum is reduced by half, it suggests that the velocity was reduced by half.

Velocity is directly related to momentum.

Use the model to answer the question.
Which element symbol actually represents the model?

Plz answer

Answers

Answer:

B

Explanation:

Boron has 5 protons.

Is vacuole a plant or animals cell

Answers

Answer:

plant

Explanation:

let me know if correct

Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, "What a great demonstration of the properties of metals!"


What properties of metals would Mrs. Franklin most likely teach about with this demonstration?


conductivity and luster

ductility and malleability

malleability and reactivity

conductivity and ductility

Answers

Answer:

Ductility and Malleability

Explanation:

Pls mark my answer as brainliest

Answer:

the correct answer is Ductility and Malleability....(B)....

Explanation:

I took the test, hope this helps. also the person above me is correct

write the complete balanced equation for the decomposition of AI(CIO3)3.

Answers

Answer:

2AL(ClO3)3 → 2ALCl3 + 9O2

Explanation:

A state property X has a value 89.6 units. It undergoes the following changes, first increase by
3.6 units, then increase by another 18.7 units, then decrease by 12.2 units and finally attains a
value of 85.5 units The value for this series of change is A) 14.2 units
B) -4.1 units C) 108.3 units
D) uncertain​

Answers

Answer:

B) -4.1 units

Explanation:

According to this question, a state property X has a value 89.6 units. It undergoes the certain changes as follows:

- first increase by 3.6 units

- then increase by another 18.7 units

- then decrease by 12.2 units

- and finally attains a value of 85.5 units

This can be mathematically represented by 89.6 - {3.6 + 18.7 - 12.2 - x) = 85.5

To get x, we say;

89.6 + 3.6 = 93.2

93.2 + 18.7 = 111.9

111.9 - 12.2 = 99.7

99.7 - 85.5 = 14.2units.

The changes that occured is represented as follows:

= (3.6 + 18.7) - (12.2 + 14.2)

= 22.3 - 26.4

= -4.1 units

Loose sugar dissolves much faster than a sugar cube because loose sugar?
A. Has greater surface area
B. Has less kinetic energy
C. Has a higher temperature
D. Has greater surface tension

Answers

Loose sugar dissolves much faster than a sugar cube because loose sugar (a) has greater surface area.

When any solute dissolve in ground into small pieces it dissolve faster in solvent than large pieces because in small ones the large surface area is exposed into solvent.

With the greater surface area is exposer, the contact in between the solute particles and the solvent is more. this is the reason that loose sugar cube dissolve much faster than sugar cube as sugar cube has less surface area in contact with solvent.

Thus, Loose sugar dissolves much faster than a sugar cube because loose sugar (a) has greater surface area.

To learn more about solubility here

https://brainly.com/question/8685116

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1. Why is soil erosion relatively less in dense forests as compared to barren, open fields?

Answers

Because the deep roots of big trees hold the soil and don't let it slip away simply by rain or wind.

Answer:

the roots of the trees keep the soil in place opposed to a barren landscape that has little to no plants to keep the soil in place

hope this helps (╹ڡ╹ )

The density of lead is 11.4g/cm3. What volume, in ft3, would be occupied by 10.0 g of lead?

Answers

Answer:

The volume is 3.09 ft^3.

Explanation:

The formula for volume is mass divided by density. 10.0 g / 11.4 g/cm^3 = 0.87719. Converted to cubis foot is 3.09 ft^3. I hope this helps you.

If 150 G of war started burning 300 G of where as was left behind how many grams of CO2 gas is released

Answers

Answer:

geruow0irghvn3p0unhie0ghik

Explanation:

Explain how the isotopes and ions of an atom differ.

Answers

Answer:

istopes is a situation in which each of two or more forms of same element that contain equal number of proton....while ions of an atoms are with extra electrons or missing electrons so they tends to differ

K20
Molar Mass (g/mole)
2(39.10) + 16.00 = 94.20 g/mole
Moles
5.85 moles
Mass (grams)
Particles

Answers

Answer:

yes

Explanation:

that is the answer

Which part of the atom can be transferred from one atom to another to form
ions?
a. Protons
b. Neutrons
c. Valence Electron
d. Nucleus

Answers

Answer:

Explanation:  Valance Electron

When 2.5 moles of N2 react according to the reaction below, how many moles of NH3 will be produced?
N2 + 3 H2 --> 2 NH3
O 2.5 moles NH3
0 2.0 moles NH3
O 1.3 moles NH3
5.0 moles NH3

Answers

Answer:

5 mol

Explanation:

by stoichiometry

nN2/1=nNH3/2

2.5=nNH3/2

nNH3=2.5×2

nNH3= 5 mol

Answer: I got 5.0 moles

Explanation:

State the career function of mechanical engineering​

Answers

Answer:

Mechanical engineers design power producing machines, like electric generators, internal combustion engines, and steam and gas turbines, also power using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.

Explanation:

Which of the following subatomic particles are found surrounding the nucleus and have a negative charge?

F negatrons

G neutrons

H protons

J electrons

Answers

Answer:

J electrons

Explanation:

Electrons are the negatively charged subatomic particles that surrounds the nucleus of an atom.

Electrons occupy the bulk volume of an atom. These particle was discovered by J.J ThomsonThey found orbiting the extra-nuclear space of every atom. The nucleus is made up of protons and neutrons.

which process explains how rock that formed underground is now aboveground in sierra nevada

Answers

Answer:

formation process

Explanation:

farllon plate was fully subducted along pacific coast line

The cascade mountains formed from the igneous rocks by plate movement are younger and they are formed by the uplift of plates makes them appears aboveground in sierra Nevada.

What are cascade mountains in Sierra Nevada ?

Since they were formed by melting above a subduction zone, the Cascades and Sierra Nevada's rocks are largely igneous. The Cascades, which initially arose 36 million years ago and are still forming now, are younger mountains.

In contrast, the Nevadan Orogeny, which occurred over 200 million years ago, is when the plutonic core of the Sierra Nevada started to form. When subducting at a sharp angle, oceanic lithosphere at the edge of the North American continent melted, and the magma surged back through the continental crust to form a volcanic arc.

The once-deep granite batholith that makes up today's Sierra Nevada was exposed by erosion after being raised by the North American plate. Although one small spur is located in Nevada, the elevated granitic intrusion is 640 kilometers  long and largely located in California.

Find more on rocks in Sierra Nevada:

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how many sig figs are in 0.0093

Answers

Answer:

there are two significant figures

Explanation:

Answer:

there are two

Explanation:

because the zeros dont count

how do i caculate velocity

Answers

Answer:

Velocity Equation in these calculations:

Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v.

Explanation:

Which of the following best describes a hypothesis?
A. An explanation that is supported by scientific data
B. A proven explanation for experimental results
c. A possible answer to a scientific question
D. A question about the natural world
please help i will give brainliest

Answers

It’s C because hypothesis is what u think would happen in the experiment
It is most definitely C, A hypothesis is a prediction before an experiment occurs



In lab you reacted 60 grams of propane (C3H8) with 13 grams of oxygen gas (O2). Your

reaction made 63 grams of water (H2O). The reaction is shown below:

How much carbon dioxide (CO2) is released into the air?

C3H8 + 5O2 ------> 3CO2 + 4H2O

10 g

73 g

120 g

1368

Answers

Answer:

120g

Explanation:

Based on the reaction, when 1 mole of propane and 5 moles of oxygen react, 3 moles of CO2 and 4 moles of H2O are produced. The ratio of production is 3 moles of CO2 per 4 moles of H2O.

Thus, we need to convert mass of water to moles using its molar mass:

Moles H2O (Molar mass: 18g/mol):

63g H2O * (1mol / 18g) = 3.5 moles H2O

Converting to moles of CO2:

3.5 moles H2O * (3 moles CO2 / 4 moles H2O) = 2.625 moles CO2

Mass CO2 (Molar mass: 44g/mol):

2.625 moles CO2 * (44g / mol) = 115.5g of CO2 are released

120g

what is the name of the compound represented by the formula SI2BR6

Answers

Answer:

Disilicon Hexabromide

Explanation:

A compound H2O is named – Dihydrogen monoxide. Its common name is of course water. A compound of Si2Br6 is named – Disilicon Hexabromide. 2.

What is the total number of atoms in 0.20 mol of propanone, CH3COCH3?
NA = 6.022 x 1023

1.2 x 1022
1.2 x 1023
6.0 X 1024
6.0 x 1023

Answers

Answer:

1.2×10²³ atoms.

Explanation:

Data obtained from the question include:

Mole of propanone = 0.20 mole

Number of atoms of propanone =.?

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.

This implies that 1 mole of propanone also contains 6.022×10²³ atoms.

Thus, we can obtain the number of atoms in 0.20 mole of propanone as illustrated below:

1 mole of propanone contains 6.022×10²³ atoms.

Therefore, 0.20 mole of propanone will contain = 0.2 × 6.022×10²³ = 1.2×10²³ atoms.

Thus, 0.20 mole of propanone contain

1.2×10²³ atoms.

The total number of atoms in 0.20 mole of propanone is 1.2×10²³, i.e. in given mole 1.2×10²³ atoms of propanone is present.

How many atoms present in one mole?

In one mole of any substance 6.022 × 10²³ atoms of that substance will present, and this number is known by the name of Avogadro's number.

We have given moles of propanone = 0.20 mole

No. of atoms present in 0.20 mole of propanone = 0.20  × 6.022×10²³ = 1.2×10²³.

Hence, 1.2×10²³ atoms are present in given moles.

To know more about Avogadro's number, visit the below link:

https://brainly.com/question/10614569

List the elements that make up the compound copper sulfate

Answers

The elements that make up copper sulfate are copper and sulfate

Which states of matter can form solutions?
A. Gas-liquid
B. Solid-solid
C. Solid-liquid
D. All of the above

Answers

Answer:

c

Explanation:

spongebob cheese pants

Answer:

I believe D

Explanation:

im not super sure but I'm pretttyyy sure

Express in scientific notation. Choose the answer with the proper number of significant figures. 9x10^9/4.5x10^1​

Answers

Answer:

Your answer should be 2.4 x 10^9.  please hit the crown

Explanation:

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