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Advocard [28]
3 years ago
5

Which of the following statements is true? A. Isotopes of the same element have the same number of protons and neutrons. B. Isot

opes have the same physical properties as the normal atom but different chemical properties. C. Isotopes have the same chemical properties as the normal atom but different physical properties. D. If an isotope of one element has the same atomic mass as another element, they will have the same properties.
Chemistry
1 answer:
k0ka [10]3 years ago
6 0

Answer:

B

Explanation:

Isotopes have the same number of protons but different number of neutrons.

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Bezzdna [24]

Answer:

heterogeneous mixture or a chemical mixture

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3 years ago
What element in magma is most abundant
pishuonlain [190]
Oxygen :) hope it helped
6 0
3 years ago
Read 2 more answers
ILL GIVE A BRAINLY PLS HELP
Oksana_A [137]

Atoms are the unit of the molecule of the compound. The 3.01 x 10²⁴  atoms of oxygen are present in 5 moles of water and 3 moles of carbon dioxide in the sample.

<h3>What are atoms?</h3>

Atoms are the smallest fundamental unit of the compounds that can be given by Avogadro's number.

For calculating the oxygen atoms in 5 mole water:

If 1 mole = 6.02 × 10²³

Then, 5 moles = 5 ×  6.02 × 10²³

Hence, 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water.

Moles of carbon dioxide in the sample is calculated as:

If 1 mole of carbon dioxide = 6.02 × 10²³ molecules

Then moles in 1.8 x 10²⁴ molecules will be,

(1.8 x 10²⁴ molecules) ÷ (6.02 × 10²³ molecules)  = 3 moles

Hence, 3 moles of carbon dioxide is present in the sample.

Learn more about Avogadro's number here:

brainly.com/question/5098076

#SPJ1

3 0
2 years ago
The rate law for a reaction is rate=k[A][B] Which one of the following statements is false? The rate law for a reaction is Which
Andrews [41]

Answer: The reaction is first order overall.

Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

Rate=k[A]^x[B]^y

k= rate constant

For the given rate law:

Rate=k[A]^1[B]^1

x = 1= order with respect to A

y =1=  order with respect to B

n =( x+y)= (1+1) = 2 = Total order

a)  If [A] is doubled, the reaction rate will increase by a factor of 2: True

Rate'=k[2A]^1[B]^1

Rate'=k[2]^1[A]^1[B]^1

Rate'=[2]^1\times Rate

Rate'=[2]\times Rate

b) The reaction is first order overall: False

The overall order is 1+1= 2.

c)  k is the reaction rate constant: True

Rate=k[A]^x[B]^y

k= rate constant

d) The reaction is first order in [B]: True

For the given rate law:

Rate=k[A]^1[B]^1

x = 1= order with respect to A

e) The reaction is first order in [A]: True

For the given rate law:

Rate=k[A]^1[B]^1

y =1=  order with respect to B

3 0
3 years ago
Is the two halogens are attcehedto carbon ajecent​
stepladder [879]

Answer:

please give me brainlist and follow

Explanation:

They can be divided into two types: Geminal dihalides- When the halogen atoms are placed on the same carbon atom. Vicinal dihalides- When the halogen atoms are placed on the adjacent carbon atoms.

8 0
3 years ago
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