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3 years ago

List at least four characteristics of acids

Chemistry

2 answers:

xeze [42]3 years ago

8 0

Answer:

pH>7

sour taste

donate H+ ions

turn litmus paper from blue to red

Explanation:

ad-work [718]3 years ago

8 0

Answer:

Explanation:

pH < 7.

Sour taste (though you should never use this characteristic to identify an acid in the lab)

Reacts with a metal to form hydrogen gas.

Increases the H+ concentration in water.

Donates H+ ions.

Turns blue litmus indicator red.

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What characterizes a radioactive atom?

elena-s [515]

Answer:

It's C

Protons repel the neutrons.

Explanation:

An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. The instability of an atom's nucleus may result from an excess of either neutrons or protons.

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3 years ago

Read 2 more answers

The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

Oxana [17]

Answer:

neither photosynthesis nor respiration.

Explanation:

Photosynthesis is the process by which the green plants, in the presence of sunlight makes their own food. In the process carbon dioxide is absorbed and oxygen is released.

$6CO_2 + 6H_2O\ (sunlight)\ \rightarrow C_6H_{12}O_6 + 6O_2$

Respiration is the intake of oxygen and the metabolism of the glucose in which it is breakdown and releases carbon dioxide.

$C_6 H_{12}O_6 + 6O_2\rightarrow 6CO_2 + 6H_2O + ATP$

In neither of the two processes, carbon dioxide is splitted.

5 0

3 years ago

What volume of a 0.160 MM solution of KOHKOH must be added to 550.0 mLmL of the acidic solution to completely neutralize all of

puteri [66]

The given question is incomplete. The complete question is :

What volume of 0.160 M solution of KOH must be added to 550.0 mL of the acidic solution to completely neutralize all of the 0.150 M hydrochloric acid?

Answer: Volume in liters to three significant figures is 0.516 L

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HCl$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is KOH

We are given:

$n_1=1\\M_1=0.50M\\V_1=550.0mL\\n_2=1\\M_2=0.160M\\V_2=?$

Putting values in above equation, we get:

$1\times 0.150\times 550.0=1\times 0.160\times V_2\\\\V_2=516mL=0.516L$ (1L=1000ml)

Thus volume in liters to three significant figures is 0.516 L

6 0

3 years ago

What are involuntary muscles

Hatshy [7]

Involuntary Muscles

⇒ Involuntary Muscles are muscles that contract without any conscious control.

The most important Involuntary Muscle in the body is the heart.

3 0

3 years ago

A wooden block has the following measured dimensions: height 1.25 cm; width 2.5 cm and length of 15.956 cm. Calculate its volume

never [62]

Answer:

$V=50mL$

Explanation:

Hello,

In this case, by knowing that the volume of an object is computed by considering its dimensions, width, length and height, for the given measurements, we obtain:

$V=W*H*L=1.25cm*2.5cm*15.956cm\\\\V=49.86cm^3$

Moreover, since one cubic centimetre equals one millilitre, the required volume is:

$V=49.86cm^3*\frac{1mL}{1cm^3}\\ \\V=49.86mL$

Finally, since 2.5 cm has the fewest significant figures (2), the proper result is:

$V=50mL$

Regards.

3 0

4 years ago