Answer:
Explanation:
DENSITY = MASS( g)/ VOLUME (cm3)
= 90 g / 18 cm3
= 5g/cm3
be attentionto this note , that each 1cm3 =1ml
2O²+4H²=
what is the answer
Answer:
4H²O
Explanation:
A new material formed in a chemical reaction is called a?
atom
element
product
reactant
please help me with this multiple choicee!!!
Answer:
Answer : it's 8.8kg
Explanation:
that's what's it should be.
Calculate the mass of a piece of metal if its volume is 2.3 cm’and density is .486 g/cm3.
<-- Round to 3 digits
and show correct
units
Answer:
1.12 g.
Explanation:
From the question given above, the following were obtained obtained:
Volume (V) of metal = 2.3 cm³
Density (D) of metal = 0.486 g/cm³
Mass (m) of metal =..?
The density of a material is simply defined as the mass of the material per unit volume of the material. Mathematically, it is expressed as:
Density (D) = mass (m) / volume (V)
D = m/V
With the above formula, we can easily calculate the mass of the metal as shown below:
Volume (V) of metal = 2.3 cm³
Density (D) of metal = 0.486 g/cm³
Mass (m) of metal =..?
D = m/V
0.486 = m/2.3
Cross multiply
m = 0.486 × 2.3
m = 1.12 g
Therefore, the mass of the metal is 1.12 g.
What does the force of gravity between two objects depend on?
A. The masses of the two objects and the distance between them
B. Only the mass of the smaller object and its distance from the
larger object
C. Only the masses of the two objects
D. The mass of the smaller object and the speed at which it's moving
Answer:
A
Explanation:
Answer:
Explanation:
The formula for the force of gravity is
F=G * m1 * m2 / r^2
G is a constant. It does not change with the use of the formula. There are 2 masses, so the force depends on the masses.
The right hand side is divided by r^2. that's a distance. So that's the other quantity influencing the Force.
B: incorrect. Both objects have masses. That determines the force between them.
C: incorrect. It's also the distance between them.
D: incorrect. The formula contains nothing to indicate that velocity is important.
The answer is A
what area of chemistry are marine chemist
Answer:
As a marine chemist, you study the chemical properties of different bodies of water with the goal of making them safer and cleaner. For this to happen, you determine the potential effects of foreign chemicals, as well as the impact of aquatic transportation and construction, on rivers, lakes, and oceans.
Explanation:
calculate the number of atoms of sodium in a 4.5-gram sample
Answer:
1.18×10²³ atoms.
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ atoms.
From the above concept, 1 mole of sodium also contains 6.02×10²³ atoms.
1 mole of sodium = 23 g.
Thus,
23 g of sodium contains 6.02×10²³ atoms.
Therefore, 4.5 g of sodium will contain = (4.5 × 6.02×10²³)/23 = 1.18×10²³ atoms.
From the above calculation,
4.5 g of sodium contains 1.18×10²³ atoms.
Some one plz help me out ASAP!
Answer:
can you help me with my science
Help I don't understand how to do this I need answerssss
Answer: what is this sorry
What two-step process separated the cans into aluminum, steel, and tin?
Answer:
Magnet
Durability and heaviness.(texture)
Explanation:
Magnet can be use to separate Aluminum from mixture of steel and aluminum.
Though aluminum and steel look alike but magnet can be use to separate it.
If the can attract the magnet or magnet stick to the can, it is a steel can. Aluminum does not stick to magnet.
A mixture of Aluminum and tin can also be separated by magnet.
Tin attract magnet but tin is more durable, heavy and does not corrode easily.
When u touch the three cans, tin is heavy and durable.
34 questions and 22 questions are right what is the percent error
Find the density of a liquid with a volume of 3.8 mL and a mass of 3.75 g
Answer:
The answer is
0.99 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} [/tex]From the question
mass of liquid = 3.75 g
volume = 3.8 mL
Substitute the values into the above formula and solve for the density
The density is
[tex]density = \frac{3.75}{3.8} \\ = 0.98684210...[/tex]
We have the final answer as
0.99 g/mLHope this helps you
Need Answer Quick
Copper is used in wiring because its metallic bonding gives its _______ a high degree of freedom and the material a high conductivity.
electrons
neutrons
protons
Answer:
Electrons
Explanation:
can anyone help me? thank you :))
the precautions that must be taken when carrying out experiments with hydrogen
Answer:
Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.
is it true or false that the basic particle from which all elements are made is a m olecule
Answer:
False
Explanation:
check out the explanation in the attached file
The cows in a rancher's herd of cattle have been selectively bred to
produce milk. Which of the following will cause the next generation of
cows to receive the trait for producing large quantities of milk?
a. nutrients in the cows' food
b. essential minerals in the cows' water
c. electrical impulses in the cows' brains
d. information in the cows' chromosomes
Answer:
Information in the cows chromosomes answer d
Explanation:
How many liters are in 2.36 gallons?
Answer:8.933572
Explanation:
for an approximate result, multiply the volume value by 3.785
Answer:
8.934 liters
Hopefully this helped!
-✩sandwichchan✩
what is the electron configuration of an electrically neutral alkaline earth metal? please explain
Answer:
The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (see Figure below). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is ns
Which compound is the strongest acid?
O H2S
O HBr
O Li2O
O LiBr
Answer
D. Malleability because he is most likely going to show how you can easily roll pizza dough
<*> blue misssst <*>
Explanation:
Which groups of the periodic table want to gain electrons? What kind(s) of elements are these groups
Answer:
Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions. Metals that are located in column 1A of the periodic table form ions by losing one electron.
Explanation:
The groups in the periodic table that want to gain electrons are groups; 15, 16 and 17. The members of these groups are mostly nonmetals.
The periodic table is composed of 18 groups and 8 periods of elements. Groups 1 - 13 are metals while groups 15 -18 are nonmetals. Group 14 consists of a mixture of metals and nonmetals.
The nonmetals usually accept electrons while metals electrons easily donate electrons. Elements of group 18 neither receive nor donate electrons because they have a complete octet.
Nonmetals of groups 15 -17 gain electrons easily.
Learn more: https://brainly.com/question/16360348
Consider the function f(x) =
9-82
x² - 4
For which intervals is f(x) positive? Check all that apply.
(-0, -3)
(-3,-2)
(-2, 2)
0 (2, 3)
0 (0o, 3)
which of the following represents ca chemical change. rocks being smoothed by rapid water movement iron attraction to a magenta the pink color of a rose decomposition of stone due to acid rain
Answer:
The answer is decomposition of stone during acid rain
Explanation:
The reason being is that decomposition is most likely a result of a chemical change.
Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm^3. The formula is D=m/v
Answer:
The answer is
3.89 g/cm³Explanation:
The Density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} [/tex]
From the question
mass = 52.457 g
volume = 13.5 cm³
The density is
[tex]density = \frac{52.457}{13.5} \\ = 3.885703...[/tex]
We have the final answer as
3.89 g/cm³Hope this helps you
1. How many miles are in 1,000,000 centimeters?
Answer:
I looked it up and it said 6.214
2) What is the effect of time of day on temperature? The dependent variable
would be: *
The day the temperature was taken
Time of day the measurements were taken
Time in between the measurements
Temperature change
Answer:
Are we talking about body temperature or atmospheric temperature?
Select the correct image. Which element is a noble gas?
Answer:
He (Helium)
Explanation:
According to the Periodic Table, our noble gases are:
Helium - Element 2
Neon - Element 10
Argon - Element 18
Krypton - Element 46
Xenon - Element 54
Radon - Element 86
How does I meter in France compare to I meter in America?
Answer: a meter is a meter
Explanation:
a meter is a certain lenght. it does not change when you're somehwere else
A meter is the SI unit for length. This means that it is an international standard unit which is the same in America and France.
What is the SI unit of measurement?The International System of Units (SI) is a French system. It is called French Système International d’Unités. It is an international decimal system of weights and measures. It has been derived from the metric system and extended it further.
It was adopted by the 11th General Conference on Weights and Measures (CGPM) in the year 1960, it is abbreviated as SI in all languages.
In the 19th and 20th centuries, rapid advances took place in the field of science. These developments resulted in the development of several overlapping systems of units of measurement. These were improvised by scientists to meet the practical needs of their disciplines.
The earlier international system that was developed for solving this issue was called the meter-kilogram-second (MKS) system. Then there was the CGPM system which added three new units in 1948. It used a unit of force, the newton.
It is defined as the force that can be given to a mass of one kilogram to provide it with an acceleration of one meter per second per second. Also a unit of energy, the joule was defined. It is the work done when the application of a newton on a point is displaced by one meter in the direction of the force.
There was also a unit of power, the watt. This is the power that gives to the energy of one joule. All of these three units were named after eminent scientists.
Therefore, a meter is the same in America as well as France.
Read more about the SI system, here
https://brainly.com/question/6277621
#SPJ2
Trying to find the energy in calories but, I don't understand the last part of the formula. Please help!
energy in calories = (mass of water)(change in water temperature)(0.001 Cal/g·°C)
Food Item: Peanut
Mass Of Food (g): 0.3
Mass Of Water (g): 51.4
Initial Water Temperature (°C): 21.2
Final Water Temperature (°C): 39.8
Energy (calories): ???
Answer:
Energy: (51.4)(39.8-21.2)(0.001) = 0.956Cal/g°C
A scientist wants to predict the weather which of the following spheres should he most directly study
