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aleksklad [387]
3 years ago
6

What were elements characterized by in the 1860's

Chemistry
1 answer:
ahrayia [7]3 years ago
4 0

Answer:

Döbereiner singled out triads of the elements lithium, sodium and potassium as well as chlorine, bromine and iodine. He noticed that if the three members of a triad were ordered according to their atomic weights, the properties of the middle element fell in between those of the first and third elements.

Explanation:

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True or false? Enzymes in the digestive tract catalyze hydrolysis reactions.
Slav-nsk [51]

Answer:

The given statement is true.

Enzymes which are present in the digestive tract such as salivary amylase, pepsin, trypsin, et cetera mainly catalyze the hydrolysis reaction.

The hydrolysis reaction is the reaction by which large molecules are broken down into smaller molecules with the help of water.

Most of the complex molecules or nutrients such as starch, protein et cetera are broken down into their respective smaller units with the help of hydrolysis reaction.

For example, lactase catalyzes the hydrolysis of lactose into glucose and galactose.

5 0
3 years ago
Read 2 more answers
1 poin
8090 [49]

Answer:

It's called Independent variable

Explanation:

....

4 0
3 years ago
A concentrated salt solution has a mass of 5.34 g for a 5.00 ml sample. what is the specific gravity of this solution?
Nutka1998 [239]

The specific gravity of the solution is 1.07, which contains 5.34g for a 5.00ml sample.

Density of a substance is

Density = Mass / Volume

             = 5.34/5

             = 1.07

Density of water = 1

Specific gravity = Density of substance/density of solvent

Specific gravity = 1.07 / 1

Specific gravity = 1.07

Specific gravity, often known as relative density, is the ratio of a substance's density to that of an industry standard.

If a material has a relative density that is less than 1 compared to the reference, it is less dense than the reference; if it is larger than 1, it is denser. Identical volumes of the two substances have the same mass if the relative densities are equal, or exactly 1.

To learn more about specific gravity click the given link

brainly.com/question/543765

#SPJ4

6 0
2 years ago
An aircraft is taking a group of skydivers up into the air. Evan is dressed in
meriva

4,410 kJ

Explanation:

Gravitational Potential Enegry (GPE) is calculated as;

GPE = <em>m*g*h</em>                           where;

m = mass (kg)

g = gravity (m/s²)

h = height (meters)

= 90 * 9.8 * 5000

= 4,410,000‬ joules

= 4,410 kJ

7 0
3 years ago
Is it true river flows from areas of low ground to areas of high ground​
melomori [17]
False, rivers tend to flow from high ground to low ground
5 0
3 years ago
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