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3 years ago

Is acidity always bad?

Chemistry

2 answers:

Anna71 [15]3 years ago

7 0

Answer:

depends on what you're talking about. Stomach acid benefits us, some fruits like oranges, lemons, and pineapples are acidic.

Explanation:

Lady bird [3.3K]3 years ago

3 0

Answer:

No.

Explanation:

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The unequal sharing of electrons between the oxygen and hydrogen atoms within a water molecule makes water a ____________ molecu

Ivanshal [37]

Answer:

Polar

Explanation:

8 0

2 years ago

A student measures the mass of a 6.0 cm3 block of brown sugar to be 10.0 g. What is the density of the brown sugar?

Alex17521 [72]

Answer:

1.67g/cm3

Explanation:

The formula for density is $d=\frac{m}{v}$ . The m variable stands for mass and the v variable stands for volume.

The mass of the brown sugar is 10.0g and the volume is 6.0cm3, so we can plug those values into the equation.

$d=\frac{10g}{6cm^{3} }$

$d=1.67$ $\frac{g}{cm^{3} }$

Rounded to 3 significant figures, the density of the block of brown sugar is 1.67 g/cm3. If the mass is in grams and the volume is in cm3, the unit for the final answer is $\frac{g}{cm^{3} }$ (grams per centimetres cubed).

8 0

3 years ago

Read 2 more answers

Which of these electron transitions correspond to absorption of energy and which to emission?

Keith_Richards [23]

The electron transitions representing absorption of energy are:

(a) n = 2 to n = 4

(d) n = 3 to n = 4

and those which represents emissions of energy are:

(b) n = 3 to n = 1

An electron emits energy when it jumps from a higher energy level to a lower energy level transitions.

An electron absorbs energy to jump from a lower energy level to a higher energy level transitions.

(a) n = 2 to n = 4

Here, the initial level (2) is lower than the final level (4).

Hence energy is absorbed.

(b) n = 3 to n = 1

Here, the initial level (3) is higher than the final level (1).

Hence energy is released.

Here, the initial level (5) is higher than the final level (2).

Hence energy is released.

(d) n = 3 to n = 4

Here, the initial level (3) is lower than the final level (4).

Hence energy is absorbed.

The question is incomplete. Find the complete question here:

Which of these electron transitions correspond to absorption of energy and which to emission?

(a) n = 2 to n = 4

(b) n = 3 to n = 1

(d) n = 3 to n = 4

Learn more about electron transitions at brainly.com/question/2079874

#SPJ4

4 0

1 year ago

Name two methods of separating mixtures. Describe the property each of these separations based

grigory [225]

Answer:

Distillation and using Chromatography

Explanation:

Distillation:

based on using boiling point.

Ex: separating a mixture of water and sugar by boiling the water away.

Chromatography:

based on absorption

Ex: separating the different colours that make up a black marker

8 0

3 years ago

A brick has a mass of 100 G and a volume of 25CM3 what is the density of the brick

kumpel [21]

Answer:

$\boxed {\boxed {\sf 4 \ g/cm^3}}$

Explanation:

We are asked to find the density of a brick. Density is a substance's mass per unit volume. The formula for calculating density is as follows.

$\rho= \frac{m}{v}$

The mass of the brick is 100 grams and the volume is 25 cubic centimeters.

m= 100 g
v= 25 cm³

Substitute the values into the formula.

$\rho= \frac{ 100 \ g}{25 \ cm^3}$

Divide.

$\rho=4 \ g/cm^3$

The density of the brick is <u>4 grams per cubic centimeter.</u>

5 0

3 years ago