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3 years ago

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Name two elements in the modern periodic table that break Mendeléey's rule that the elements should be arranged in order of rela

tive atomic mass.
PLEASE I NEED THE ANSWER !

1 answer:

AnnZ [28]3 years ago

4 0

I think it’s tellurium and iodine but I’m not 100% sure

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givi [52]

Ummm I just need to answer questions sorry!!!

8 0

3 years ago

How many grams will be produced

Anni [7]

Answer:

$\Large \boxed{\sf 34.2 \ g}$

Explanation:

Mole ratio

$9:4$

$1.75:x$

Moles of CO₂

$\displaystyle \frac{4 \times 1.75}{9} =0.78$

Use formula to find mass

$\displaystyle moles=\frac{mass}{M_r}$

Relative molecular mass of CO₂ = 12 + 16 × 2 = 44

$\displaystyle 0.78=\frac{mass}{44}$

$mass=34.2$

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2 years ago

Personal eyeglasses provide as much protection as Group of answer choices splash proof chemical goggles a face shield safety gla

MArishka [77]

Answer:

none of the above

Explanation:

6 0

3 years ago

Use the law of conservation of mass to answer the questions. Consider a hypothetical reaction in which A and B are reactants and

shutvik [7]

Answer:

26 grams of D will be produced.

Explanation:

The reaction is given by:

A + B -----> C + D

Mass of A reacted = 21 g

Mass of B reacted = 22 g

Mass of C formed = 17 g

Mass of D formed = m =?

According to law of conservation of mass, the total mass of the reactants used is equal to the total mass of the product formed.

Then:

mass of A reacted + mass of B reacted = mass of C formed + mass of D formed

21 + 22 = 17 + m

m = 26 g

5 0

3 years ago

PLZZZ HELPPPPPP

dezoksy [38]

Answer:

double replacement

Explanation:

6 0

2 years ago

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