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Harlamova29_29 [7]
3 years ago
12

the starting materials completely lose their properties to form new substances chemical change 2. a change from one state of mat

ter to another physical change 3. a change in shape, size, or physical characteristics but remaining same substance Law of Constant Composition 4. a pure compound consists of exactly the same elements in the exact same ratios by mass molecule 5. The smallest unit of a compound phase change
Chemistry
1 answer:
Aleks04 [339]3 years ago
5 0

Answer:

hjfvhfdjkfdb  vhdfhv;hcvn b

Explanation:

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Describe the phases/states of matter, excluding plasma
Art [367]

Answer:

The three states of matter are the three distinct physical forms that matter can take in most environments: solid, liquid, and gas. In extreme environments, other states may be present, such as plasma, Bose-Einstein condensates, and neutron stars.

6 0
3 years ago
Name two elements that have properties similar to those of beryllium and have average atomic masses higher than 130
sertanlavr [38]
In the periodic table, elements of the same group are characterized by having the same similar properties.
So, first we will check the elements that lie within the same group as <span>beryllium  and then we will attempt to choose the elements with atomic mass higher than 130.

So, elements in the same group as </span>beryllium are: magnesium, calcium, strontium, barium and radium.
Among these elements, we will find that:
radium has atomic mass of 226 amu
barium has atomic mass of 137.327 amu

Based on this, the two elements would be barium and radium.

3 0
3 years ago
PLS HELP ASAP NO LINKS PLS
lisabon 2012 [21]

Answer:

Coal puts out more Co2 emissions than Oil or Gas and Nuclear energy plants don't put out any pollution.

Explanation:

Even though Coal is your answer it is actually a very clean form of generating energy. Not only is it very clean but it is the most effecient means. Solar and Wind power can't even come close to the production and turnover that Coal, Gas, and Oil can. Wind Turbines are so innefficent that they somtimes don't even pay off what it took to build them in thier lifetime of service. The production of Wind Turbines puts out more pollution than any of the Coal or Natural Gas Plants. Solar power is not very efficent either but it is on it's way. It is also very expensive.

3 0
2 years ago
How many moles in 1.00g of salicylic acid?
salantis [7]

Answer:-  0.00724 moles.

Solution:- Grams of salicylic acid are given and it asks to calculate the moles.

For the moles, we divide the grams by the molar mass.

Formula of salicylic acid is C_7H_6O_3

Molar mass = 7(12.01)+6(1.01)+3(16.00)

= 84.07+6.06+48.00

= 138.13 gram per mol

We could make the dimensional analysis set up for showing unit cancellation and have the moles.

1.00g(\frac{1mol}{138.13g})

= 0.00724 moles

So, there will be 0.00724 moles of salicylic acid in it's 1.00 gram.

7 0
3 years ago
The type of social bonds present in modern societies that are based on difference, interdependence, and individual rights is cal
Goryan [66]

Answer:

Organic Solidarity

Explanation:

3 0
3 years ago
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