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seraphim [82]
4 years ago
13

An object weighing 90 n has a volume of 45 ml and a mass of 9.0 g what is its density

Chemistry
1 answer:
UNO [17]4 years ago
7 0
D= mass over volume

So, density equals 9.0g divided by 45ml.

SO, D=.25 g/ml

I'm not 100% sure this is correct, though. Best if luck. ♡
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2567 milliliters to liters
ollegr [7]

Answer:

2.567

Explanation:

To change milliliters into liters you divide by 1000

So when you divide 2567 by 1000 you get 2.567

6 0
3 years ago
Read 2 more answers
Enter the balanced complete ionic equation for HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+KCl(aq). Express your answer as a chemical equati
Marat540 [252]

<u>Answer:</u> The net ionic equation is given below.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

These ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of hydrochloric acid and potassium carbonate is given as:

2HCl(aq.)+K_2CO_3(aq.)\rightarrow H_2O(l)+CO_2(g)+2KCl(aq.)

Ionic form of the above equation follows:

2H^+(aq.)+2Cl^-(aq.)+2K^+(aq.)+CO_3^{2-}(aq.)\rightarrow CO_2(g)+H_2O(l)+2K^+(aq.)+2Cl^-(aq.)

As, potassium and chloride ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation.

The net ionic equation for the above reaction follows:

2H^+(aq.)+CO_3^{2-}(aq.)\rightarrow CO_2(g)+H_2O(l)

Hence, the net ionic equation is given above.

7 0
3 years ago
Arrange these Alkaline Earth metals from lowest to highest electronegativity: Ca, Be, Ba, Sr
a_sh-v [17]

Ca is -2

Be is stabilized

Ba is -4

Sr is -3

so it would be =>  Ba, Sr, Ca, Be

have a wonderful day! :)

6 0
3 years ago
__________ is an intermediate electron acceptor for oxidations that occur in both glycolysis and in krebs cycle reactions
Gnesinka [82]

Answer: NADH

Explanation:

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In case of glycolysis the NADH accepts the electrons when the Glyceraldehydyde 3-phosphate is converted into 1, 3 Biphosphoglyceric acid. In the last step of the glycolysis 4 ATP molecules are produced.

Kreb's Cycle takes place in the mitochondria of the cell. During this process the electron acceptor is NADH. 3 molecules of NADH is produced during the process of citric acid cycle.

During the step when the isocitrate is converted into alphaketogluterate , alphaketogluterate is converted into succinyl co A and malate to oxaloacetate   produces 1 molecules of NADH at each step.

3 0
3 years ago
Which solution is a buffer? which solution is a buffer? a solution that is 0.200 m in h2so4 and 0.200 m in na2so4 a solution tha
Ulleksa [173]
Buffer is formed from weak acid and its salt with strong base (its conjugate base)
So the only one correct answer is :
0.2 M H₃PO₄ and 0.2 M NaH₂PO₄ 
While all other choices are incorrect
4 0
3 years ago
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