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2 years ago

Atoms of two different elements react with each other when they have?

1 answer:

7 0

All other elements react with other elements to form compounds. In the special case where the reaction produces fixed numbers of the same types of atoms in exactly the same configuration, we say the elements have formed a molecule.

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All energy originates from the ________.

exis [7]

Answer:

Sun is the answer!!!!!!

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2 years ago

Bohr's Model of the atom

AlexFokin [52]

Answer:

group 17 the halogen.as it has 7 electron in its outermost ring

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2 years ago

What is the collision theory

algol13

Answer:

Collision theory states that when suitable particles of the reactant hit each other, only a certain fraction of the collisions cause any noticeable or significant chemical change; these successful changes are called successful collisions.

Explanation:

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3 years ago

How many moles of h2o will be produced from 2.9 g of HCl reacting with Ca(OH)2?

Igoryamba

Answer:

0.080 mol

Explanation:

M(HCl) = (1.0 +35.5) g/mol = 36.5 g/mol

2.9g*1mol/36.5 g = 0.0795 mol HCl

Ca(OH)2 + 2HCl ---> CaCl2 + 2H2O

from reaction 2 mol 2 mol

given 0.0795 mol x mol

x = 0.0795 mol ≈0.080 mol

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3 years ago

Write 2,469,100 in Engineering Notation with 3 significant figures.

Gala2k [10]

Answer: $2.47\times 10^{6}$

Explanation:

Engineering notation : It is the representation of expressing the numbers that are too big or too small and are represented in the decimal form times 10 raise to the power. It is similar to the scientific notation but in engineering notation, the powers of ten are always multiples of 3.

The engineering notation written in the form:

$a\times 10^b$

where,

a = the number which is greater than 0 and less than 999

b = an integer multiple of 3

Now converting the given value of 2,469,100 into engineering notation, we get $2.47\times 10^{6}$

Hence, the correct answer is, $2.47\times 10^{6}$

6 0

2 years ago