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3 years ago

How many grams are present in 0.885 moles of manganese?

Chemistry

1 answer:

pshichka [43]3 years ago

4 0

A. 48.6g
PLS MARK BRAINLEIST IF IM RIGHT

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Please help!! 20 points!! Posted this previously and forgot to change it to 20 points but it is now

spayn [35]

Answer:

0.571 mol

Explanation:

Given data:

Number of moles of NaHCO₃ = 0.571 mol

Number of moles of CO₂ produced = ?

Solution:

Chemical equation:

NaHCO₃ + C₃H₆O₃ → CO₂ + C₃H₅NaO₃ + H₂O

Now we will compare the moles of CO₂ with NaHCO₃ from balance chemical equation.

NaHCO₃ : CO₂

1 : 1

0.571 : 0.571

So number of moles of CO₂ produced are 0.571.

3 0

3 years ago

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Can you Convert 75°F to °C

Leya [2.2K]

Answer: 23.8889

Explanation:

(75°F − 32) × 5/9 = 23.889°C

5 0

3 years ago

A 275 g sample of a metal requires 10.75 kJ to change its temperature from 21.2 oC to its melting temperature, 327.5 oC. What is

Vlada [557]

Answer:

$c=0.127\ J/g^{\circ} C$

Explanation:

Given that,

Mass of the sample, m = 275 g

It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.

We need to find the specific heat of the metal. The heat required by a metal sample is given by :

$Q=mc\Delta T$

c is specific heat of the metal

$c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{10.75\times 10^3\ J}{275\times (327.5 -21.2)}\\\\=0.127\ J/g^{\circ} C$

So, the specific heat of metal is $0.127\ J/g^{\circ} C$ .

4 0

2 years ago

Which choice can be classified as a pure substance?

ozzi

Answer:

d. compound

Explanation:

compound and elements are pure substances

8 0

3 years ago

Calculate the pressure using the formula

Nina [5.8K]

Answer:is 1.08 kg

Explanation:

Just got it wrong and it gave me the answer

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3 years ago

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