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2 years ago

PERGUNTA URGENTE!!!Por onde o sapo caga?Me falaram que era pela boca.

Chemistry

1 answer:

Mumz [18]2 years ago

5 0

Answer:

A urina passa pelos ureteres pareados para a bexiga urinária, que é ventilada periodicamente na cloaca. Todos os resíduos do corpo deixam o corpo pela cloaca, que termina em uma cloaca.

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The decomposition of water into hydrogen gas Hy and oxygen gas Oz can be modeled by the balanced chemical equation

ASHA 777 [7]

Answer:

D. ) 2H2O - 2H2 + O2

3 0

3 years ago

PH que tendra una solución cuya concentracion de [OH-] = 1x10-4

natta225 [31]

I don’t understand wha u just said but thanks for the points

7 0

3 years ago

Given the reaction to 2NaOH + H2 SO4 â Na2 SO4 + 2H2 O, what is the total number of grams of NaOH needed to react completely wit

vfiekz [6]

Answer:

4 moles, 160 g

Explanation:

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

For $H_2SO_4$ :-

Mass of $H_2SO_4$ = 196 g

Molar mass of $H_2SO_4$ = 98 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{196\ g}{98\ g/mol}$

$Moles\ of\ Sulfuric\ acid= 2\ mol$

According to the given reaction:

$2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O$

1 mole of sulfuric acid reacts with 2 moles of NaOH

So,

2 moles of sulfuric acid reacts with 2*2 moles of NaOH

Moles of NaOH must react = 4 moles

Molar mass of NaOH = 40 g/mol

<u>Mass = Moles*molar mass = $4\times 40\ g$ = 160 g</u>

7 0

2 years ago

Help please!! I'll name you brainliest!!

Inessa05 [86]

the answers is cacih2

wjdgagqjdhdgahahdhvddvvsvshsd

7 0

3 years ago

HELP Which of the following fractions can be used in the conversion of 32 m3 to the unit mm3?

poizon [28]

We know that each millimeter contains 10⁻³ meters. Writing this as a ratio:
1 mm : 10⁻³ m

We require a conversion from m³ to mm³, so we must take the cube of the ratio we have made:
1 mm³ = (10⁻³)³ m³

Therefore, the conversion used will be:
(1 mm / 10⁻³ m)³

When we multiply by this conversion, we will get:
32 m³ = 32 x 10⁹ mm³

7 0

3 years ago