Answers
Answer:
They require diffrent types of atoms for their makeup I belive is the answer Hope this helps
Explanation: Wow you have a lot a questions XD :D :3
Element: A substance that is made up of only one type of atom. Compound: A substance that is made up of more than one type of atom bonded together. Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.
i hope this helps
Related Questions
Which non-metal have lustre in the following 1. Iodine 2. Chlorine 3. Carbon 4. Silicon
Answers
Answer:
Iodine
Explanation:
I hope this answer will help you
Answer:
silicon. ?
Explanation:
lmk if its right.
Please i need to pass this!
Please try
Answers
It is incorrect because it should have a total of eight electrons with two electrons between each H and O
Further explanationLewis structure shows the form of bonds that occur in the valence electrons of an element or compound
This bonding usually occurs in covalent bonds
Valence electrons are electrons used in a chemical bond
The main group elements usually have valence electron configurations in the ns and np subshells, While the transition elements in the subshells (n-1) d and ns.
Element O has 6 valence electrons
Element H has 1 valence electron
To achieve stability, the element O needs 2 more electrons which are obtained from 2 electrons from the H element, while the H element needs 1 electron to be stable
So that a covalent bond is formed
The density of cadmium is 8.65 g/mL, what is the volume of a 33.4 g object made of pure cadmium?
Answers
Answer:
Volume = 3.86 ml (Approx)
Explanation:
Given:
Density of cadmium = 8.65 g/ml
Mass of pure object = 33.4 g
Find:
Volume pure cadmium
Computation:
Volume = Mass / Density
Volume = 33.4 / 8.65
Volume = 3.86 ml (Approx)
5. A guava with a mass of 0.200 kg has a weight of
A. 0.200 N
B. 1.96 N
C. 4.50 N
D. 10.0 N
Answers
Weight by definition is mass multiplied by gravity. Do 0.2*9.8 to get 1.96 Newtons
A guava with a mass of 0.200 kg has a weight of 1.96N
HOW TO CALCULATE WEIGHT:
The weight of an object is its mass with respect to gravity. That is, the weight of an object, which is a force measured in Newton (N) can be calculated as follows:F = mass (m) × acceleration due to gravity (a)
The mass of the guava in this question is given as 0.200kg, hence, the weight is calculated as follows:F = 0.200g × 9.8m/s²
F = 1.96N
Hence, a guava with a mass of 0.200 kg has a weight of 1.96N.
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If the mass of the reactants in the chemical reaction was 25.3 grams, what was the mass of the products
Answers
Answer:
5
Explanation:
5
You are using a calorimeter to calculate the specific heat capacity of a metallic ore. The calorimeter contains 0.50 kilograms of water at room temperature (22 °C). We heat the ore in boiling water and then drop the metal into the calorimeter and wait for the water and metal to reach the same temperature. The mass of the ore is 3.5 kilograms. We find that the water has increased in temperature to 24.3 °C. Recall that the specific heat of water is 4.18 J/g–°C. Calculate the specific heat capacity of the ore.
Answers
In the calorimeter, the heat received is the same as the heat released
Q abs = Q release
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
Q released by a metallic ore and absorbed by water at calorimeter
Q ore = Q water
Q waterm = 0.5 kg = 500 g
c = 4.18 J/g–°C.
Δt = 24.3 - 22 = 2.3
[tex]\tt Q=m.c.\Delta t\\\\Q=500\times 4.18\times 2.3=4807~J[/tex]
the specific heat capacity of the ore.Q ore = Q water = 4807 J
m ore = 3.5 kg = 3500 g
Δt = 100 - 24.3 = 75.7
[tex]\tt 4807=3500\times c\times 75.7\\\\c=0.018~J/g^oC[/tex]
3. Which of the following is used to calculate the average atomic mass of an element?
Answers
What is the picture displayed?
Proton , atom , element, cell
Answers
Answer:
I can't see the picture so I can't answer
Express 749 000 000 in scientific notation,
Answers
Answer:
7.49 × 108
Explanation:
Scientific notation is a way to express numbers in a form that makes numbers that are too small or too large more convenient to write. It is commonly used in mathematics, engineering, and science, as it can help simplify arithmetic operations. In scientific notation, numbers are written as a base, b, referred to as the significant, multiplied by 10 raised to an integer exponent, n, which is referred to as the order of magnitude:
How do you calculate mass and velocity does that equal to a certain amount of more energy or no
Answers
Answer:
The formula is: p=mv
(P)momentum is equal to (m) mass times (v) velocity.
Explanation:
Which element has 16 protons in its nucleus?
neon
oxygen
sodium
sulfur
Answers
Answer: Sulfur
Explanation: Sulfur has 16 protons, silicon has 14 protons, and gold has 79 protons.
Answer:
d
Explanation:
which statement correctly describes protons and neutrons?
a. they have the same mass and the same electrical charge
b. they have the same mass but different electrical charge
c. they have the different masses but the same electrical charge
d. they have different masses and different electrical charges
Answers
Answer:
B
Explanation:
what mass of gold, Au, contains the same number of atoms as 9.0 g of aluminum Al
Answers
Answer:
55.16 grams of gold contain same number of atoms as 7.72g AI contain
The half-life of lead-212 is 11h. How much of a 100-g sample of lead-212 is left after 33h?
Someone please help
Answers
This would mean that after 33h, only 12.5grams of Lead-212 are left over.
Could you do both a and b
Answers
Answer: a. atominc number= protons= 33
neutrons= mass- atominc number
80-33= 47 neutrons
b.35 protons
46 neutrons
hope this helps
How do I put Chlorofluorocarbons in a sentence?
Answers
Answer: Here are some examples
Explanation:
1. In the southern spring, ozone is destroyed above Antarctica, mainly by manufactured compounds called chlorofluorocarbons (CFCs )
2. It is now generally accepted that the loss of stratospheric ozone is caused by chemical reactions initiated by chlorofluorocarbons.
3. Your refrigerator and other home appliances emit Chlorofluorocarbons, or CFCs, as do aerosol spray cans.
Hope this hlps!
Explanation:
To be able to put the chemical term chlorofluorocarbons in a sentence, you must first understand what the chemical species denotes.
We know chlorofluorocarbons are a group of compounds that consists of atoms of chlorine, flourine, and carbon.
Now, here are some sample sentences;
Chlorofluorocarbons are one of the leading causes of ozone depletion in the atmosphere. Most national governments are putting measures in place to check the use of chlorofluorocarbons in industrial manufacturing.If we can innovate a substitute for chlorofluorocarbons, the environment would be safer.Which of the following characteristics is shared by both primary and secondary consumers? I need it quick it please
A. Uses the Sun's radiant energy of produce food
B.The first step in an food chain diagram
C. Eats only plants to gain needed energy
D.Gains energy by eating other living things
Answers
Answer:
Gains energy by eating other living things
The statement 'gains energy by eating other living things' is a characteristic shared by both primary and secondary consumers (Option D).
Producers (e.g. algae and plants) are autotrophic organisms that generate their own food.Primary consumers and secondary consumers are heterotrophs that need to eat other organisms to survive.Primary consumers can be, for example, herbivores, whereas secondary consumers can be carnivores.In conclusion, the statement 'gains energy by eating other living things' is a characteristic shared by both primary and secondary consumers (Option D).
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Round the value 44.981
Answers
Answer: 45
Explanation: it would be 45 bc if the value is 5 and over the number goes up and if it is lower than 5 it would stay the same.
Answer:
45 is the answer
Explanation:
(True/False) Solid Potassium Chloride, KCl (s), consists of equal numbers of positive Potassium ions (K+), and negative Chloride ions (Cl-) arranged in three dimensional networks called crystals. (6 Pts)
Answers
Answer:
true
Explanation:
True/False: Units for gas density are grams/L
Answers
Answer:
false
Explanation:
Describe cycling or movement of water throughout earths spheres. Explain why the process is considered a cycle. Write a complete paragraph (five complete sentences minimum) in order to receive full credit for this activity
Answers
Answer:
This process is considered as a cycle because it continues and dosent stops. This process includes the evaporation of watet from earth surface due to heat.this water is converted in to water vapours. After reaching clouds it condences back. When the clouds become heavy with watef it falls back on earth as rain.and the process repeats.
Explanation:
Material
Specific Heat
(J/gºC)
Use this chart showing the different specific heat of
various materials to answer the questions.
Which material has the highest specific heat? waterv
Which material has the lowest specific heat?
Which material has the ability to absorb twice as much
heat as aluminum when placed in the same
environment of mass and temperature?
aluminum
0.90
iron
0.44
lead
0.16
sand
0.83
steel
0.49
wood
1.80
water
4.18
) Intro
Done
6 of 9
Answers
Answer:
1. C
2. A
3. B
Explanation:
I took the Assignment
The material with highest specific heat is water.
The material with lowest specific heat is lead.
The material that has the ability to absorb twice as much heat as aluminium is wood.
What is specific heat? Specific heat is the quantity of heat that are required to raise the temperature of one gram of a substance by one Celsius degree. The units of specific heat are usually calories or joules per gram per Celsius degree.To learn more about specific heat here
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1 pc
Calculate the volume of a an object that has a height of 14.3cm, length or
25.2cm, width of 6.7cm. *
46.2cm
2414.412 cm
0.085 cm
53.785 cm
Answers
Answer:0.085
Explanation:
Molecules in a liquid are:
closer together than in a gas
moving more quickly than in a solid
moving more slowly than in a gas
all of the above
Please help!!!
Answers
Answer:
all of the above
Explanation:
All of the above
Explanation:
I don't understand this :c
help me please
Answers
Which of the following best describes hair? O Hair is made of mostly tightly packed living cells Hair does not help control body temperature. O Hair growth occurs in the hair follicle O Hair grows at 2.5mm a month.
Answers
Answer:
(A) Hair is made of mostly tightly packed living cells.
Explanation:
i just took the exam :) yw
a like would be nice thanks!
Answer:
A
Explanation:
Just did the exam :) Good Luck!
stages of mitosis in order
Answers
Answer:
nucleus formed
prophase
metaphase
anaphase
telophase and cytokinesis
An orange falls off of a display at a store and rolls 5 meters in 2.5 seconds. What is the average speed of the orange?
Answers
5/2.5=2
2meters/second
An orange falls off of a display at a store and rolls 5 meters in 2.5 seconds the average speed of the orange will be 2 meters per second.
What is speed?Speed if the rate of change of position of an object in a given time of interval or per unit time of interval and it is the ratio of distance traveled to the time taken and the unit will be meter per second.
The average speed of the orange will be if the orange falls off of a display at a store and rolls 5 meters in 2.5 seconds,
Speed = distance / time
Substituting the value,
speed =5 meters /2.5 seconds
speed = 2 meters per second.
Therefore, the average speed of the orange will be 2 meters per second if, the orange falls off of a display at a store and rolls 5 meters in 2.5 seconds.
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Unit: Scientific Measurement“One, Two, and More Step Problems” – Wksh #2
1.How many g are equal to 345.7 mg?
2.Change 0.00765 kL into mL.
3.How many seconds are there in 2.5 days?
4.How many minutes are there in 1.000 week?
5.How many seconds long is this chemistry class if it lasts 40.0 minutes?
6.A chemistry student’s height is measured at 68.5 inches. How tall is the student in cm?
7.This same chemistry student has a weight of 155 lbs. What is the student’s weight ingrams? (16oz=1lb, 1 oz = 28.34 g)
8.A homerun in a baseball game was measured at 450 feet. How many meters is this equalto?
9.Mount Everest is approximately 8,000 meters high. How many miles high is MountEverest?
10.A 5.0 km race is scheduled for this weekend. How many miles is this race?
Answers
Answer:
1. 0.3457g
2. 7650mL
3. 216000 seconds
4. 10080minutes
5. 2400 seconds
6. 173.99cm
7. 70283.2g
8. 137.16metres
9. 4.968miles
10. 3.105miles
Explanation:
1. 1000mg = 1g
345.7 mg = 345.7/1000
= 0.3457g
2. 1kL = 1000000mL
0.00765 kL = 0.00765 × 1000000
= 7650mL
3. 1 day = 86400s
2.5 days = 2.5 × 86400
= 216000 seconds
4. 1 week = 10080minutes
1.000weeks is equivalent to 1 week, hence there are 10080minutes in 1.000week.
5. 1minute = 60seconds
40.0minutes = 40 × 60
= 2400seconds.
6. 1 inch = 2.54cm
68.5inches = 68.5 × 2.54
= 173.99cm
7. 1Ib = 16oz
155Ibs = 155 × 16
= 2480 oz
1 oz = 28.34 g
2480oz = 2480 × 28.34
= 70283.2g
8. 1 foot = 12 inches
450 feet = 450 × 12
= 5400inches
1 inch = 0.0254metres
5400 inches = 5400 × 0.0254
137.16metres
9. 1 metre = 0.000621 mile
8000 metres = 8000 × 0.000621
= 4.968miles
10. 1 kilometers = 1000 metres
5km = 5 × 1000
= 5000metres
1 metre = 0.000621 mile
5000metres = 5000 × 0.000621
= 3.105miles
The cell membrane is found in all cells *
True
False
Answers
Answer:
true
Explanation:
all cells will have plasma membranes