What is the mass of 0.042 mole C8H18

Answer:

B Group Salt (Ionic Bond)

Explanation:

Iron (III) Oxide

Fe2O3

Answer:

Carbon Trioxide

Explanation:

Answer:

A joule divided a second

Explanation:

i took the test

plz give me brainlist :)

Answer:

Eukarya

Explanation:

if it has an nuclei its eukaryotic

Answer: The speed of the skateboard decreases compared to the wooden box

Explanation: well, umm... if you placed a refrigerator on a skateboard... that will be difficult to move, if anything it will brake the board!

A wooden box is much lighter than a refrigerator

Explanation:

Electronic configuration of Nitrogen -

₇N = 1s² 2s² 2p³

Answer:

photosphere

Explanation:

photosphere

There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere

Answer:

There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere.

Explanation:

Yes, that's right a layer of the sun is called Corona

Coincidence, I think not

Answer:

This question is incomplete and unclear; the complete question including the missing part is:

Emelie is working on a science project. Her task is to answer the question:

"Does Rogooti (a hair cream sold on TV) affect the speed of hair growth

(in length)". Her family is willing to volunteer for the experiment. Identify the control group (CG) and the independent and dependent variables.

ANSWER:

Independent variable: Rogooti hair cream

Dependent variable: Speed of hair growth/length

Control group: Family members that do not use the Rogooti hair cream

Explanation:

In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable response. In this case, the ROGOOTI HAIR CREAM is the independent variable.

Dependent variable refers to the variable that is measured or the variable that responds to the change made to the independent variable. In this case, the dependent variable is SPEED AT WHICH HAIR GROWS (IN LENGTH).

Control group in an experiment is the group that does not receive the experimental treatment. In this case, the experimental treatment is the Rogooti hair cream, hence, the control group will be the VOLUNTEER FAMILY MEMBERS THAT DOES NOT RECEIVE THE ROGOOTI HAIR CREAM ON THEIR HAIR.

Answer:

B. stored energy

hope this helps!!

15 cm

and I have to explain but there's nothing to explain so yea

Answer:

a flowering plant needs water while a fire doesn't.

That what I guessed???

Answer:

The answer is Astronomy.

Explanation: Astronomy is the study of objects beyond the Earth’s atmosphere

Answer:B

Explanation:

Explanation :

As we know that Mendeleev arranged the elements in horizontal rows and vertical columns of a table in order of their increasing relative atomic weights.

He placed the elements with similar nature in the same group.

According to the question, the atomic weight of iodine is less than the atomic weight of tellurium. So according to this, iodine should be placed before tellurium in Mendeleev's tables. But Mendeleev placed iodine after tellurium in his original periodic table.

However, iodine has similar chemical properties to chlorine and bromine. So, in order to make iodine queue up with chlorine and bromine in his periodic table, Mendeleev exchanged the positions of iodine and tellurium.

As we know that the positions of iodine and tellurium were reversed in Mendeleev's table because iodine has one naturally occurring isotope that is iodine-127  and tellurium isotopes are tellurium-128 and tellurium-130.

Due to high relative abundance of tellurium isotopes gives tellurium the greater relative atomic mass.

Answer:

6

Explanation:

the sig figs are 850320

Answer:

The answer is A

Explanation:

Nuclear power plants produce non-radioactive waste

Answer:

A

Explanation:

Answer:

First change cm in m and mass is 38.6g. Volume. =200m

Explanation:

Now,

Density =mass /volume

38.6/200

0.193 density

Answer:

Cytoplasm is the semi fluid gel like substance of a cell that is present within the cellular membranes and surrounds the nucleus.

Explanation:

Hope this helps :)

Answer:

cytoplasm is correct

Explanation:

i took the test

A few important ones........

Answer:true

Explanation:

Answer:

i have done this before

Explanation:

the bag just starts shrinking after sparkling a little bit

Answer:

2,8,8,8,8,8,8,3

Explanation:

Electron Configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

Answer:

Number 2:

Element and compound

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 257.3 g

volume = 250 cm³

We have

[tex]density = \frac{257.3}{250} \\ = 1.0292[/tex]

We have the final answer as

Hope this helps you

Answer: With the portion of hydrogen, all atoms have three parts. The parts of an atom are protons, electrons, and neutrons. A proton is accurately charged and is located in the center or nucleus of the atom. Electrons are negatively charged and are located in rings or orbits spinning around the nucleus.

Explanation: I hope this was helpful.

Answer:

halved

Explanation:

If the value of volume doubles, but the mass stays the same, the value for density will be halved. The correct option is 3.

Density is the mass per unit volume. Density is a scalar quantity. It is denoted by d and the symbol for density is given as rho, a Greek symbol. Density is calculated as mass divided by volume.

Mass is the quantity of matter in a physical body. The product of the molar mass of the compound and the moles of the substance are defined as mass.

Volume is the space occupied by a three-dimensional object. Volume is calculated by dividing mass by density.

These three factors are related to each other. If two variables are given, the third can be calculated.

Thus, the correct option is 3. Halved.

To learn more about volume, mass, and density, refer to the link:

https://brainly.com/question/13799762

#SPJ2

Answer:

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

distance = velocity × time

From the question we have

distance = 75 × 7.5

We have the final answer as

Hope this helps you

Answer: for an example

volume can easily be calculated: pi*(d^2/4)*length -> pi*[(7x10^-2)/4]*70x10–2 = volume of iron rod {VOIR}

Density = mass / volume

Therefore

Mass = density x volume

However, weight is equals to ‘mass x g (free fall acceleration’

So mass is in kg but weight is a force so simple force equation to where ‘a (acceleration)’ in ‘F=ma’ is ‘g’.

Hence,

Weight = 9.81 ms^-2 (is ‘g’) x 7870 kgm^-3 x VOIR m^3 is *insert calculated answer* N.

Explanation: