Using a calculator, what is the density of an unknown object with a mass
of 550 g and a volume of 10 cm3?

Answer:

The most accurate way to determine an object's volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces. A graduated cylinder large enough to hold both the object and enough water to fully immerse it is the best tool for this job.

Answer:

The answer is

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

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

From the question

mass = 420 g

density = 10.5 g/cm³

The volume is

[tex]volume = \frac{420}{10.5} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

The sun

Explanation:

All living things get energy from different sources (a cow gets it from grass, dog gets it from meat), but eventually, most energy on Earth comes from the Sun. Plants use it to perform photosynthesis, other organisms eat plants, and so on!

Answer:

Weight of 14.79 cm rod of iron = 640.51 gram (Approx)

Explanation:

Given:

Weight of 1 inch rod = 3.88 ounce

1 inch = 2.54 centimetre

1 gram = 0.035273 ounce

Find:

Weight of 14.79 cm rod of iron

Computation:

Weight of 14.79 cm rod of iron = 14.79[3.88/{(0.035273)(2.54)}]

Weight of 14.79 cm rod of iron = 57.3852 / 0.08959342

Weight of 14.79 cm rod of iron = 640.5068

Weight of 14.79 cm rod of iron = 640.51 gram (Approx)

Answer:

640.51 gram

Explanation:

on edg

Explanation:

a. 3 significant figures

b. 3

c. 4

d. 3

e. 4

f. 3

g. 3

h. 2

i. 1

j. 3

k. 1

l. 6

m. 3

n. 3

Answer:

Dihydrogen Dioxide

The name of binary molecule H₂O₂ is also known as hydrogen peroxide and is a popular disinfectant for cuts or scrapes is dihydrogen dioxide. The correct option is A.

Dihydrogen dioxide is the substance of water with extra oxygen molecules. In the dihydrogen monoxide parody, water is referred to by a strange scientific term, most frequently "dihydrogen monoxide,". It is a poisonous gas, and it is leading to the death of many people in America. It is known as DHMO.

Some of its characteristics are listed in an especially ominous manner, such as speeding up corrosion and inducing asphyxia. This substance, commonly referred to as hydrogen peroxide, is used frequently as a disinfectant for cuts and scrapes.

Thus, the correct option is A. Dihydrogen dioxide.

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The answer is D: process of hypothesis and testing through which scientists inquiry occurs

Answer:

d edge 2020

Explanation:

Answer:

0.005

Explanation:

I looked it up

Explanation: It's important to understand that "mg" is the abbreviation

for milligrams and "g" is the abbreviation for grams.

To convert 5 milligrams into grams, we first find the conversion factor

for milligrams and grams, which is 1,000 milligrams = 1 gram.

Next, notice that we're going from a smaller unit,

milligrams, to a larger unit, grams, so we divide.

Whenever we go from a smaller unit to a larger unit,

we will divide by the conversion factor.

So we have 5 mg ÷ 1,000.

When dividing by a power of 10, we can count the number of zeroes

in the power of 10 and move the decimal point that many places to the left.

So our answer is 0.005 grams.

Answer:

0.05 dm³

Explanation:

Please see the attached picture for full solution.

The question is asking for the volume of H₂SO₄, so we need to find the number of moles of KOH then the number of moles of H₂SO₄. (Using mole ratio from the balanced equation) Also, potassium hydroxide is KOH not K₂SO₄ :)

The answer is 1.98 x 10^10 leaves.

18 mountains x 8800 trees = 158400 total trees

158400 total trees x 125000 leaves = 19800000000 total leaves in entire mountain range

Sci not: 1.98 x 10^10 leaves  

To do scientific notation, put the decimal place right after the first digit in the number and count how many places are behind the decimal. you'll write the number of places after the decimal after the ^ in the 10^.

Answer: Physical properties

Explanation: Can be measured without changing a substance's chemical identity.

Answer:

it erupts

Explanation:

Answer:

element

Explanation:

an element is something made up of only one type of atom

Answer:

In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction.

Answer:

0.5m

Explanation:

Answer:

true

Explanation:

Answer: 500

Explanation: there's 0.001L in every mL. Divide the mL

by 1000 or multiply the liter by 1000.

Answer:

This question is incomplete

Explanation:

This question is incomplete. A covalent bond is a bond that involves the sharing of valence electrons (shared pair) by two atoms of the same/different elements/compounds. The electrons (valence) that are involved in covalent bonding are not the ones in pairs (lone pairs) on the outermost shell of the atom. For example, the single electron on a hydrogen atom is shared with another hydrogen to form hydrogen gas (H₂).

Another example is when the two individual/unpaired electrons on the outermost shell of an oxygen atom binds with two other unpaired electrons on the outermost shell of another oxygen atom.

Another example is when two different electrons from two hydrogen atom binds singly with the two unpaired electrons on the outermost shell of an oxygen atom to form water.

The diagram in the attachment provides illustration on the examples given.

Answer:

no there is not compound x in chemistry

The acceleration of the car is equal to 3.33 m/s² with a velocity of 72 Km/hr.

Acceleration can be demonstrated as the rate of change of velocity over time. The acceleration can be explained as vector quantity due to both magnitude and direction. Acceleration is defined as the 2nd derivative of the position of the object w.r.t. time.

According to Newton's 2nd law of motion, the force exerted is equal to the mass times of acceleration of an object.

a = F/m

or, a = dv/dt

Given, the final velocity of the car, v = 72 Km/hr

v = 72 × 1000/3600 m/s

v = 20 m/s

The time is taken by car to travel, t = 20 s

The acceleration of the car, a = (20 - 0)/(6 - 0)

a =  3.33 m/s²

Therefore, the acceleration of the car is 3.33 m/s².

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Answer:

Conceptual

Explanation:

Answer:

Conceptual

letter B

Answer:

The answer is

Explanation:

The mass of a substance given the density and volume can be found by using the formula

From the question

Density = 1.30 g/cm³

volume = 300 mL

Substitute the values into the above formula and solve

That's

mass = 1.3 × 300

We have the final answer as

Hope this helps you

Answer:

c

Explanation:

To give a visual display of measurement precision best specifies the purpose of error bars on a graph.

Errors in chemical analysis result when there is a difference between observed value and the true value.If the magnitude of errors is large , it results in decrease in accuracy, reproducibility, and precision.

There are three types of errors:1) random error 2) systematic error 3) human error.The cause of random errors are difficult to quantify while the human errors can be minimized by taking a range of readings to reduce the error.

Errors while measuring boiling point may be human errors while noting down the boiling temperature or instrumental or systematic error if there is a fault in the thermometer.The experiments must be done with utmost care to minimize the range of errors.

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Answer:

Where is the results and what is the question or is there a picture

Explanation:

Answer:

The correct answer is D

Explanation:

I took the test and got i correct. :) have a good day!

Answer:

A

Explanation:

Answer:

A. the valence electrons

Explanation: