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3 years ago

Why is it important to exposing sodium borohydride to moisture?

1 answer:

4 0

1. Sodium borohydride is a mild reductant, but water can amplify its reactivity and make it too strong of a reductant. 2. Sodium borohydride ignites when it comes into contact with water. 3. Sodium borohydride is hygroscopic and when it reacts with water it loses a hydride and no longer can be used as a hydride source.

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Burning your hand when accidentally touching a hot plate is an example of which heat transfer? a.Conduction b.Convection c.Radia

aniked [119]

Answer by YourHope:

Hi! :)

Question: Burning your hand when accidentally touching a hot plate is an example of which heat transfer?

Answer: A) Conduction!

Question: Compare and contrast Conduction and Convection. Which is true?

Answer: C) Convection can only transfer heat through fluids, but Conduction can transfer heat through solids and fluids!

Have a BEAUTIFUL day~

7 0

3 years ago

Read 2 more answers

Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl ( aq ) , as describe

Nataly [62]

Answer:

0.9483 grams of manganese dioxide should be added to excess HCl.

Explanation:

Pressure of the chlorine gas = P = 795 Torr = 1.046 atm (1 atm = 760 Torr)

Volume of the chlorine gas = V = 255 ml = 0.255 L

Temperature of the chlorine gas = T = 25°C= 298.15 K

Moles of chlorine gas = n

Using ideal gas equation:

PV = nRT

$n=\frac{PV}{RT}=\frac{1.046 atm\times 0.255 L}{0.0821 atm l/mol k\times 298.15 K}$

n = 0.01090 mol

$MnO_2 ( s ) + 4 HCl ( aq)\rioghtarrow MnCl_2 ( aq ) + 2 H_2O ( l ) + Cl_2 ( g )$

According to reaction , 1 mole of chlorine gas is obtained from 1 mole of manganese dioxide.

Then 0.01090 moles of chlorine gas will be obtained from:

$\frac{1}{1}\times 0.01090 mol=0.01090 mol$ manganese dioxide

Mass of 0.01090 moles of manganese dioxide:

0.01090 mol × 87 g/mol = 0.9483 g

8 0

3 years ago

Which term is used when sugar is dissolved in water?a: covalentb: homogeneousc: amphibigeneousd: heterogeneous

Liula [17]

Homogeneous because it completely dissolved so its now one. Heterogeneous would be when they don't dissolve and you see 2 separate substances like sand in water.

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4 years ago

What is the result of multiplying

vlabodo [156]

Answer:

i believe it's C

Explanation:

the result of multiplying (2.5 * 1010) and (3.5 x 10-7) is 8.8.10^3

5 0

2 years ago

Methionine, ch3sch2ch2ch(nh2)co2h, is an amino acid found in proteins. draw a lewis structure of this compound. what is the hybr

Evgesh-ka [11]

hybridization is defined as mixing up of the atomic orbital with nearly same energies according to linear combination of atomic orbitals. the orbitals formed are equal in energy and are called hybrid orbitals .

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3 years ago