WORTH 60 POINTS DONT PLAGIARIZE OR WILL REPORT. thanks :) You and your family are going on a trip in Europe. Calculate the speed in the following picture. Show your work and include units. Include 4-5 sentences explaining.

Answer:

null

Explanation:

the hypothesis is a typical statistical theory which suggest that no statistical relationship and significance exists in a set of a given single observed variable between two sets of the observed data and measured phenomena

Answer:

The correct answer is 14 cm³.

Explanation:

Based on Archimedes Principle at rest when a body is completely or partially immersed within a fluid, it encounters a vertical thrust, which is equivalent to the weight of the fluid that the body displaces. In the mentioned case, the fluid is water. Thus, the rock being denser will result in the displacement of water, making the level of water to ascend in the cylinder.  

Thus, if V₁ or the initial volume is 20 ml or 20 cm³, and after insertion of the rock, the rise in the level of water becomes V₂ as 34 ml or 34 cm³. Then the volume of the rock will be,  

V = V₂ -V₁ = 34 - 20 = 14 cm³.  

Answer:

Radioactive

Explanation:

They're more unstable than my home life

Answer:

142.82 g

Explanation:

The following data were obtained from the question:

Volume of water = 12 mL

Volume of water + gold = 19.4 mL

Density of gol= 19.3 g/cm³

Mass of gold =.?

Next, we shall determine the volume of the gold. This can be obtained as follow:

Volume of water = 12 mL

Volume of water + gold = 19.4 mL

Volume of gold =.?

Volume of gold = (Volume of water + gold) – (Volume of water)

Volume of gold = 19.4 – 12

Volume of gold = 7.4 mL

Finally, we shall determine the mass of the gold as follow:

Note: 1 mL is equivalent to 1 cm³

Volume of gold = 7.4 mL

Density of gol= 19.3 g/cm³ = 19.3 g/mL

Mass of gold =?

Density = mass /volume

19.3 = mass of gold /7.4

Cross multiply

Mass of gold = 19.3 × 7.4

Mass of gold = 142.82 g

Therefore, the mass of the gold pebble is 142.82 g

Given :

Measurements [tex]4.5\ cm\times 2000.0\ cm\times 4\ cm[/tex] .

To Find :

The multiplication using significant figures .

Solution :

We know , the least number of significant figures in any number of the problem determines the number  of significant figures in the answer.

So , significant figure( S.F) in 4.5 cm is 2 .

S.F in 2000.0 cm is 5 .

S.F in 4 cm is 1 .

So , minimum S.F is 1 .

Therefore , S.F of their product is 1 .

Now , multiplying them we will get :

[tex]M=4.5\times 2000.0\times 4 \ cm^3\\\\M=36000\ cm^3[/tex]

Now , converting 36000 in 1 significant digit .

First we will write it in exponential 2 S.F form.

[tex]3.6\times 10^4 \ cm^3[/tex]

Now , to convert 3.6 into 1 S.F we should round off this .

So , round off 3.6 we will get 4 .

Therefore , The multiplication using significant figures is [tex]4\times 10^4\ cm^3[/tex] .

Hence , this is the required solution .

Answer:

True

Explanation:

The given statement is true.

A scientific model is defined as the mathematical and physical representation of a process or event. Scientists perform several observations or experiment and find a connection between them to prove a scientific finding.

A scientific model has the ability of explanatory power which helps to make things easier to understand using diagrams and consistency across contexts. Testing and prediction power in scientific models leads to strong predictions and able to convince people using an appropriate model.

Hence, the correct answer is "true".

There are 680,000 microliters in 0.68 liters.

Answer:

Chemical Change

Explanation:

chemical bonds within the substance have been altered because a new substance has been produced. It cannot be a mixture because they do not involve changes in matter, it cannot be a physical change because they do not result in new substances, it is not a solution because those do not involve changes in matter.

Answer:A

Explanation:

Answer:

The proportion of carbon and oxygen is different in different samples of the gas.

Answer:

The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

Explanation:

Answer:

liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.

Explanation:

hope this helps :3

Answer: Hg

Explanation:

The symbol of Mercury is Hg drived from Hydra gayrum

Answer:

Electrolytes

Explanation:

Electrolytes are minerals in your body and balance the amount of water in your body. In this case, it balances the water from the salt by producing a mixture of ions.

Electrolytes are the ions formed when water molecules shatter the ionic bonds of a salt and can conduct an electric current.

Electrolytes are compounds that create ions and may conduct electric current when dissolved in water or melted. These ions may carry electric charges and let electrical energy flow through a solution or molten solid.

Electrolytes are compounds that breakdown into ions when dissolved in water or melted. The presence of these ions permits electricity to pass through the solution or molten material.

Thus, electrolytes are classified as either strong, which entirely breakdown into ions, or weak, which only partially dissociate. Salts, acids, and bases are examples of common electrolytes.

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Answer:

make an observation

Explanation:

Answer:

OBSERVING AND QUESTIONING

Explanation:

when you use the scienfic method the first thing you have to do is question you theory and coming up with a hypothesis which is what you expect to happen

Answer:

Compound

Explanation:

Consisting mostly of sugar dissolved in water (corn syrup), and having the same concentration of solute throughout, it would be classified as homogeneous. Are compounds heterogeneous or homogeneous?

Cough syrup is a mixture as more than one compound is used in it. It is a homogenous mixture.

A mixture is a material made up of two or more different chemical substances which are not chemically bonded. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

A mixture can be homogenous mixture or heterogenous mixture. Homogenous mixture is a mixture in which there are more that one components but we can't distinghuish them with our eye whereas heterogenous mixture is a mixture in which there are more that one components and we can distinghuish them with our eye.

Traditional cough mixtures are formulated around a syrup at 60 - 75% concentration which is made from sucrose, maltodextrin, glucose, invert syrup, etc. The remainder is made up of thickening agents, stabilizers and active ingredients.

Therefore, Cough syrup is a mixture as more than one compound is used in it. It is a homogenous mixture.

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Answer:

See explanation

Explanation:

Even though the options were not stated in the question, it is clear that the prediction required must reflect the stated fact that the sublimation temperature of CO2 is -78.5°C. This is the fact that was observed in the cause of the experiment. Hence any of the options that reflects this statement must be the correct option among the list of options available in the question.

Answer:

(NH4)2CO3 is the formula !

Answer:

[tex](NH_4)_2CO_3[/tex]

Explanation:

Ammonium carbonate is made by reacting ammonium sulfate, ammonium chloride, and calcium carbonate in a furnace.

The correct answer to this would be:  

Earth’s volcanoes

Together with weathering and plate tectonic movements, Earth’s volcanic eruptions and emission of lava has destroyed/covered many of the craters which were created on Earth during the Period of Heavy Bombardment.

IamSugarBee

The correct answer to this would be letter:  

A. Earth’s volcanoes

Together with weathering and plate tectonic movements, Earth’s volcanic eruptions and emission of lava has destroyed/covered many of the craters which were created on Earth during the Period of Heavy Bombardment.

Answer:

communicating results

Explanation:

Answer:

Communicating results

Explanation:

Answer:

prefix kilo

Explanation:

Hope this helps.......

Answer:

A. Being black in color

Explanation:

Physical properties are properties that can be observed without having to change the chemical composition of the substance.

So, an observation about the color of the object would be physical.

Therefore, A is correct because there are no chemical changes involved, while the other 3 answer choices involve some type of chemical change.

Answer:

Being black in color.

Explanation:

It is something you can see with one of your 5 senses.

Answer:

b

Explanation:

m ≈ 110.30 grams

d = m/V

m = d×V

m = 8.96g/cm³×12.31cm³

m = 110.2976

m ≈ 110.30 grams

Answer:

[tex]\Huge \boxed{\mathrm{110.2976 \ grams}}[/tex]

[tex]\rule[225]{225}{2}[/tex]

Explanation:

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

[tex]\displaystyle \rho = \frac{m}{V}[/tex]

Solving for the mass.

[tex]m = \rho \cdot V[/tex]

The density of the copper piece is 8.96 g/cm³.

The volume of the copper piece is 12.31 cm³.

[tex]m = 8.96 \cdot 12.31[/tex]

[tex]m= 110.2976[/tex]

The mass of the copper piece is 110.2976 grams.

[tex]\rule[225]{225}{2}[/tex]

Answer: b- it is always a substance

Explanation: matter can be any liquid, gas, or solid that takes up space so the answer cannot be C or D. For answer number A to be true, you would have to remove the word more, because matter just has mass and takes up space it does not have "more mass"

Explanation:

about 78 % of the air is nitrogen and 21% is oxygen . These two gases can be seperated by fractional distillated of liquid air . Air is filtered to remove dust ,and then cooled in states until it reaches -200'C at this tempereture it is liquid . The air has been liquefied. And after a distillation process you can obtain nitrogen from a mixture of nitrogen and oxygen .