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REY [17]
2 years ago
14

How many moles are in 15 grams of Cr2(CO3)3 ?

Chemistry
1 answer:
Rainbow [258]2 years ago
7 0

Answer:

0.052813386714757

Explanation:

That's what I got, not quite sure if it's right tho

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4. If the DNA nitrogen bases were TACCGGAT, how would the other half of
Illusion [34]

Answer:

<u>ATGGCCTA</u>

Explanation:

For this we have to keep in mind that we have a <u>specific relationship between the nitrogen bases</u>:

-) <u>When we have a T (thymine) we will have a bond with A (adenine) and viceversa</u>.

-) <u>When we have C (Cytosine) we will have a bond with G (Guanine) and viceversa</u>.

Therefore if we have: TACCGGAT. We have to put the corresponding nitrogen base, so:

TACCGGAT

<u>ATGGCCTA</u>

<u></u>

I hope it helps!

3 0
2 years ago
An atom of an element that has the same number of protons but a different number of neutrons is called a(n): ion nucleus isotope
alexandr1967 [171]
It is called an isotope
5 0
2 years ago
Determine the resulting pH when 12mL if 0.16M HCl are reacted with 32 mL if 0.24M KOH.
TEA [102]

Answer:

pH = 13.1

Explanation:

Hello there!

In this case, according to the given information, we can set up the following equation:

HCl+KOH\rightarrow KCl+H_2O

Thus, since there is 1:1 mole ratio of HCl to KOH, we can find the reacting moles as follows:

n_{HCl}=0.012L*0.16mol/L=0.00192mol\\\\n_{KOH}=0.032L*0.24mol/L=0.00768mol

Thus, since there are less moles of HCl, we calculate the remaining moles of KOH as follows:

n_{KOH}=0.00768mol-0.00192mol=0.00576mol

And the resulting concentration of KOH and OH ions as this is a strong base:

[KOH]=[OH^-]=\frac{0.00576mol}{0.012L+0.032L}=0.131M

And the resulting pH is:

pH=14+log(0.131)\\\\pH=13.1

Regards!

3 0
2 years ago
The amount of coal burned to produce electricity by a typical coal plant in the United States during a three year period has inc
nataly862011 [7]

Answer:

<em>b</em>

<em>an increase in non-biodegradable wastes</em>

Explanation:

5 0
2 years ago
Read 2 more answers
The entropy of a system is reported in units of A) kJ/mol B) kJ/(mol.K) C) kJ/(g.K) D) kJ
horsena [70]
<span>entropy = heat energy (q) /Temperature(T)
can u now answer it </span>
5 0
3 years ago
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