The coefficients in the balanced chemical equation are used to determine mole ratios.Write the mole ratios found in the reaction "Making water
H2: _____0
H2;
H20
___02: _
H20
Answers
Answer:
1 mole of HCl or NaOH gives you 1 mole of H2O , then the number of moles in H2O is: [ 1÷1×1 ] = 1 mole.
Explanation:
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Answer:
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Explanation:
Answer:
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Answers
Answer:
element S is argon and element T is potassium.
4. B
5. D
Explanation:
in an element in periodic table number of elctrons and protons are same.
4. since element S has 18 protons so its atomic number must be 18 so the element is Argon which is the last element of period 4 so the next element will go to period 4 with one extra shell and since the atomic number of next element is 19 the element is Potassium. therefore T is Potassium.
5. number of nucleons in an atom is the number of protons and neutons combined together in an nucleus
Isotopes are the same element with different numbers of protons and different numbers of neutrons.
Isotopes are the same element with the same number of protons but different numbers of neutrons.
Answers
Answer:
C; Isotopes are the same element with the same number of protons but different numbers of neutrons.
For instance, the element carbon exists as several isotopes, each having the exact same number of protons (otherwise, it would no longer be carbon if the # of protons changes), and a different number of neutrons
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Answers
Answer:
Chemical Formula: AlCl₃
Chemical Name: Aluminium Chloride
Properties are given below.
Explanation:
Chemical Formula:
Chemical formula depicts the total number of elemants forming a particular compound. It is common that all compounds are neutral in nature despite of the internal charges they contain. As given Aluminium has a + 3 charge while Chlorine has a -1 charge, therefore, to make a neutral compound we will require 3 Cl⁻ ions to neutralize one Al³⁺ ion hence, the chemical formula will be AlCl₃.
Chemical Name:
According to rules ionic compounds are named by naming the positive part first followed by negative part. In this case Al³⁺ being is name d first followed by Cl⁻ (remember the -ine in anions is replaced by -ide) hence, this compound will be name as Aluminium Chloride.
Properties:
Few physical and chemical properties of AlCl₃ are;
(i) It melts at 192.4 °C
(ii) Highly Soluble in water
(iii) It has a density of 2.48 g/cm³
(iv) Poor conductor of electricity
(v) It is used as catalyst in many organic reactions
(vi) Reacts with silver nitrate to form silver chloride and Aluminium Nitrate
Answers
Answer:
The new volume is 65.1 mL.
Explanation:
We have,
Initial volume of the gas is 100 mL
Initial temperature is 300 degrees Celsius
It is required to find the volume the gas will occupy at 100 degrees Celsius. Charles law gives the relation between volume and temperature such that,
So,
V₂ is new volume
V₁ = 100 mL
T₁ = 300 C = 573.15 K
T₂ = 100 C = 373.15 K
Plugging into formula we get :
So, the new volume is 65.1 mL.