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Anvisha [2.4K]
3 years ago
13

How to combine elements to make compounds?

Chemistry
1 answer:
zavuch27 [327]3 years ago
6 0
Elements combine<span> to </span>form<span> chemical </span>compounds<span> that are often divided into two categories. Metals often react with nonmetals to </span>form<span> ionic </span>compounds<span>. These </span>compounds<span> are composed of positive and negative ions formed by adding or subtracting electrons from neutral atoms and molecules.</span>
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Please help... I’m trying to study for a test and I can’t find any information on these questions.
lana66690 [7]

Well usebtainlyzzhxhxxjxudxu d m

3 0
3 years ago
A cylindrical rod of length 1 m and radius 1 cm is submerged in water. The rod has a non-uniform mass distribution such that one
Mazyrski [523]

Answer:

A) at the rod's geometrical center

Explanation:

Let us assume that the rod is replaced by water. And now this water volume is in translational and in rotational equilibrium.

Therefore, a net upward force must have been exerted by the surrounding liquid which acts at the center of mass of the water volume.

This force determines through the geometric center of the column of the cylindrical water  

Moreover, the force is also independent of submerged body into it

Hence, the first option is correct

7 0
3 years ago
How many moles of ethyl alcohol, C2H6O, are in a 16.0 g sample
Anon25 [30]
Moles = mass/molar mass, so n(C2H6O)= 16.0 / (12+12+(1x6)+16)
=0.348 (to correct sig figs)
8 0
3 years ago
Carbohydrates like sugars and starches are made of only three elements: carbon (C), hydrogen (H), and oxygen (O). How is it poss
lara31 [8.8K]

Answer:

See explanation

Explanation:

A carbohydrate is formed from carbon, hydrogen and oxygen. These three elements are combined in every carbohydrate.

Even though carbohydrates are composed of only these three atoms, the number of atoms of these elements in each carbohydrate as well as the spatial arrangement of these atoms in each carbohydrate is not the same.

This means that different carbohydrates contain different number of carbon, oxygen and hydrogen atoms which are arranged in different ways in space. This gives room for the existence of many different types of carbohydrates all consisting of carbon, hydrogen and oxygen atoms.

8 0
3 years ago
Which elements are out of order in terms of atomic mass. co,Ni or Li,be or I,xe​
valkas [14]

Answer:

The pair co,Ni is out of order in terms of atomic mass

Explanation:

For co,Ni

Atomic mass of Co = 58.9331 u

Atomic mass of Ni = 58.6934

For Li,be

Atomic mass of Li = 6.941 u

Atomic mass of  be = 9.012182 u

For I,xe

Atomic mass of I =  126.90447 u

Atomic mass of Xe = 131.293 u

Hence, the pair co,Ni is out of order in terms of atomic mass

7 0
3 years ago
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