does a liquid have a shape??

The result of the reaction when the scientist is added more copper then the amount of product increases. If copper is increased to 6 g then the product copper sulphide increases to 9 g.

Copper sulphide is a compound made by metallic copper and sulfur gas. As per the reaction, two moles of copper is required to react completely with one mole of sulfur. Thus copper is the limiting reactant here.

It is the limiting reactant in a reaction that decide the final yield of the product. It is given that, 4 g of copper produced 6 g of the product then, the mass of product produced by 6 grams of copper is calculates as follows:

mass of product = (6×6)/4 =9 g

Hence,  if the amount of copper is increased to 6 g, the product increases to 9 g.

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Answer:

The answer is

Explanation:

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

From the question

mass of object = 20 g

volume = 100 mL

Substitute the values into the above formula and solve

That's

[tex]Density = \frac{20}{100} \\ = \frac{2}{10} \\ = \frac{1}{5} [/tex]

We have the final answer as

Hope this helps you

Answer:

The likely causes inferred about the differences in times observed are;

1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid

2) Variation of heat input due to wind draft that alters the focus of the flame

3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water

Explanation:

The factors that affect the boiling point of water includes;

1) The amount of heat supplied, to the water

2) Vapor pressure above the water surface

3) Presence of impurities in the water

Therefore, the most likely causes for the difference in the times observed for the water to boil in the order of increasing probability of cause and effect are therefore;

1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid

2) Variation of heat input due to wind draft that alters the focus of the flame

3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water.

We can infer that the observed time differences may be the result of impurities present in the water.

We can achieve this result because:

However, the boiling temperature of water (100°C) can be changed if the water contains any kind of impurity. In this case, we can infer that the second experiment of the student contained impure water, which made the boiling temperature higher.

More information:

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Answer:

The correct answer is - option A. It is important to always ask questions and want to find answers not just in science but in all activities.

Explanation:

Curiosity is the desire to learn about things and natural phenomenon that what is the reason behind the particular reaction or particular phenomenon and any type of knowledge to understand things better.

It is an ability that is not confined to the scientific community only but found in most of the humans and in all the activities. It helps in understanding the world and things better.

Thus, the correct answer is - option A.

Answer: a

Explanation:

according to the passage: “galileo concluded that gravity is a constant based on the experiment result: weight doesn’t change the speed at which object fall

Galileo’s conclusion about how weight affects gravity that heavier objects will increase the value of gravity. option B is correct.

Gravity is a force of attraction that holds the planets in orbit around the sun and the moon in orbit around Earth. Gravity not only pulls on mass of any object but also on light from any coming source.

And according to the Newton sir law also if the mass of any object is more or double then the gravity will also become double from the expected gravity.

Therefore, Galileo’s conclusion about how weight affects gravity that heavier objects will increase the value of gravity. option B is correct.

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Answer:

A chemical reaction is described by achemical equation, an expression that gives the identities and quantities of the substances involved in a reaction. A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow

Answer:

sodium + chlorine → sodium chloride

Explanation:

This was the answer straight from Plato. I hope that this helped you, please mark me the brainiest, like and rate my answer if it did! :)

Answer:the one with more mass

Explanation: the more mass the more dense

Answer:

no

Explanation:

:-[:-[:-[:-[:-[:-[:-[:-[:-[

Answer:

Hi yes

Explanation:

Answer:

And since there is a frictional force acting upon the rotating blades of the fan due to the air, the speed of the fan blades ceases and ultimately comes to halt. Thus here, air friction is the external force which makes the fan blades to stop after sometime, otherwise it would have never stopped rotating :P.

Explanation:

Answer: air friction

Explanation:

Answer: 1436 mL

Explanation: 4/3 • 3.14 • 7^3 <— calculate

Volume is the measurement of the shapes that are given by the dimensions like the radius. A balloon in the shape of a sphere with a radius of 7.00 cm is 1436.76 cm³.

The volume is the quantitative measure of the object or substance with respect to its radius or diameter which is given in milliliters, liters, or cubic centimeters.

The volume has no definitive shape but acquires that of the container like the spherical shape of the balloon.

The formula to calculate the volume of a sphere is,

[tex]\rm V = \dfrac{4}{3} \pi r ^{3}[/tex]

Given,

Radius (r) of the balloon = 7.00 cm

π = 3.14

Substituting values of r in the above formula as:

[tex]\begin{aligned} \rm V &= \dfrac{4}{3} \pi \rm r ^{3}\\\\\rm V &= \dfrac{4}{3} (3.14) (7^{3})\\\\\rm V &= 1436.76 \rm \;cm^{3}\end{aligned}[/tex]

Therefore, a balloon with a 7.0 cm radius has a volume of 1436.76 cm³.

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Explanation:

by adding some technique ex. to make the item easier for use, more convenient, more benefits than regular items.

Answer:

Sunlight travels at the speed of light. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes.  

The short answer is that it takes sunlight an average of 8 minutes and 20 seconds to travel from the Sun to the Earth.

If the Sun suddenly disappeared from the Universe (not that this could actually happen, don’t panic), it would take a little more than 8 minutes before you realized it was time to put on a sweater.

Explanation:

That is what I would put

Answer:

In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .

Explanation:

Yes ur well come

I'm not sure, i had this same question, and it doesn't make any logical sense because

A centimeter is a centimeter but in the video apparently not...  for example in the video it showed the notebook as 40cm for one and the next one shows it as 14.4 cm it stayed as cm both times the size of the ruler should not change that one ruler was by 10cm the other was by 1 cm and it showed 2 completely different numbers

so therefore it doesn't make any logical sense

here was my measurements from the little video it had

try getting ahold of the teacher or whoever gave you the question its all you really can do...

hope this helped even tho it probably didn't

         Yes true

I can't come up with a good explanation.

Answer:

feauurrjfjf iiii ammm soo confused

Explanation:

Answer:

continenetal crust

Explanation:

Magma Page 2 the densest type of crust (3.0 g/cm) and is made up of a metamorphic rock called basalt. Continental crust makes up the continents and rests on top of oceanic crust. Continental crust consists of less dense rock such as granite.

Answer:

I am 90% sure its kinetic energy

Explanation:

Answer:

nitrogen and carbon are in different groups

Explanation:

the group number determines the number of valence electrons the element has. since nitrogen and carbon have different numbers, they cannot be in the same group.

Answer:

False

Explanation:

Every chemical element undergoes a reaction in order to fulfill the completion of their outermost shell. This is the case of nitrogen (symbol "N"), which is an element found in group 5 of the periodic table with atomic number 7 (i.e. 1s2 2s2 2p3). It possesses three valence electrons in it's outermost shell.

Looking at the configuration of the Nitrogen atom, it requires three electrons to complete its electron shell. Hence, nitrogen will enter a reaction in order to have its need for THREE ELECTRONS met in order to have its electron shell full.

Note that, nitrogen enters a chemical reaction to look for three electrons not three neutrons.

Answer:d

Explanation:

Answer:hit with force when moving.

Explanation:

Example: The two cars collided with an ear-splitting crash. to clash; conflict: Their views on the matter collided.

Answer: colliding is when two things meet eachother at a certain point and hit

Explanation: Trust me.. (:

-migimigi

Answer:

If 5 mL of water is displaced when 10 g of solid is placed in the water, then it is a relatively good assumption that the density of the solid is 2 g/mL

.

Explanation:

I think its b accauly no im positive its b

Answer:

A) 27.16 moles

Explanation:

According to the question, Titanium element (Ti) is the major constituent of a frame used to make a bicycle.

The titanium-frame contains 1300grams of titanium. Thus, the amount of moles in the frame can be calculated using the formula:

Number of moles = mass ÷ molar mass

Molecular weight or molar mass of Titanium= 47.87g/mol

Hence;

Number of moles= 1300/47.87

No. of moles= 27.15688

No. of moles= 27.16 moles

Note that, the less precise measurement will be used. 27.16 (4s.f) is less precise than 27 (2s.f)

Answer:

use the  Density Calculator uses the formula , or density  is equal to mass divided by volumeThe calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.

Explanation:

Answer:

Its the powerhouse of the cell.

Explanation:

It breaks down food into energy.

I hope this helps. :3