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MrRissso [65]
4 years ago
7

Deuterium (written as d or 2h) is an isotope of hydrogen known as heavy hydrogen. part a balance the given chemical equation usi

ng whole-number coefficients. ?d2(g)+?o2(g)→?d2o(l) enter the coefficients in order separated by commas (e.g., 1,3,2, where 1 indicates the lack of
Chemistry
1 answer:
notsponge [240]4 years ago
7 0

Given unbalanced chemical reaction:

?D₂(g)+ ?O₂(g) →?D₂O(l)

Balancing the given chemical equation using whole-number coefficients:

2D₂(g)+ O₂(g) →2D₂O(l)

Therefore, the coefficients in order separated by commas are:

2, 1, 2

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If you mixed 5.50 mL of the acidic solution with 6.79 mL of the basic solution, what should be the pH of the resulting solution?
Dima020 [189]

Answer : The  pH of the resulting solution is 4.6

Explanation : Given,

pK_a=4.757

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Activity coefficient for acetate ion = 0.775

Ionic strength = 0.10 M

To calculate the pH of resulting solution we are  using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

Now put all the given values in this expression, we get:

pH=4.757+\log (\frac{0.775\times 0.10}{1.000\times 0.10})

pH=4.6

Thus, the pH of the resulting solution is 4.6

7 0
3 years ago
What does the prefrontal cortex do? What happens to grey matter in adolescence? What does this mean?
shutvik [7]

Answer:

Adolescence is a time of significant growth and development inside the teenage brain. The main change is that unused connections in the thinking and processing part of your child's brain (called the grey matter) are 'pruned' away. ... The front part of the brain, the prefrontal cortex, is remodelled last.

7 0
3 years ago
What is the mass in grams of 0.00125 mole of sodium Na=23​
Anit [1.1K]

Answer:

0.03g

Explanation:

Given parameters:

Number of moles of Na = 0.00125mole

Unknown:

Mass in grams of Na = ?

Solution:

To find the mass of this substance, we simply multiply the number of moles with the given molar mass of Na.

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 Mass of Na  = 0.00125 x 23   = 0.03g

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Your answer is 344,758.168519

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When hydrogens on an unsaturated fatty acid lie on the same side of the carbon-carbon double bond, a ____________ formation exis
dedylja [7]
When hydrogen ................................... a CIS formation exist.
There are two types of formation which are possible in fatty acids, these are CIS and TRANS configurations.
A fat is described as a CIS fatty acid if its hydrogen atoms are lying on the same side of the carbon carbon double bonds. A fat is said to be a trans fatty acid, if the hydrogen atoms in its molecules are lying on the opposite sides of the carbon bonds.
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3 years ago
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