1. Clouds form when water changes from a
A gas to liquid .
B liquid to gas.
C solid to gas
D solid to liquid.

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual density = 0.95 g/mL

error = 0.95 - 0.56 = 0.39

So we have

[tex]p(\%) = \frac{0.39}{0.95} \times 100 \\ = 41.0526315...[/tex]

We have the final answer as

Hope this helps you

When water combines with carbon dioxide in the atmosphere, it will form carbonic acid, which is a weak acid. If this weak acid comes in contact with a rock, it will cause some of the rock to be dissolved. This process can also be referred to as weathering.

Answer:

don't know this but going to figure out

Answer: 2

Explanation:

Explanation:

we know that,

From Left to right (Period) atomic radius decreases

and

From Top to bottom (Group) atomic radius increases.

Li, C, O, F belongs to same period.

So,

Atomic radius decreases if we go left to right

Increasing order of Atomic radius -

Li > C > O > F

Therefore,

Option C is correct ✔.

Answer: C

Explanation:

Answer:

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Explanation:

Answer:

Fe2O3

Explanation:

if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged

Explakjbkhbjhbjnatip[ok[okoon:

[tex]\sqrt[n]{x} \int\limits^a_b {x} \, dx \geq x^{2} \sqrt{x} \neq \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \pi \sqrt[n]{x} \frac{x}{y} \alpha \beta x_{123} \\ \leq \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \int\limits^a_b {x} \, dx \geq \geq \geq \geq x^{2} x^{2} x^{2} \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\rig[/tex]

Answer:

D

Explanation:

A and C sounds not logic

B is wrong since all the molecules has different numbers of carbon and hydrogen

D sounds correct because triple covalent bond exist at the C-C bonding

Answer:

145 hours

Explanation:

Since one hour of riding a bicycle takes up 505 kcal of energy. It is also stated that one gram of body fat is equal to 7.70 kcal. Also, it is given that 1 pound of body fat is equal to 454 g.

Hence;

1 Ib= 454 g

21 Ib= 21 × 454/1 = 9534 g

But

1g of body fat = 7.70kcal

9534 g of body fat = 9534 × 7.70 kcal/1 = 73411.8 kcal

If 505 kcal is lost in 1 hour

73411.8 kcal is lost in 73411.8 kcal × 1hour/505k cal = 145 hours

Answer:

The volume of stone is 5cm³.

Explanation:

Given data:

Volume of water = 30 cm³

Volume of water and stone = 35 cm³

Volume of stone was 5 cm³ = true or false

Solution:

To check weather the given volume of stone is true or not we have to calculate the volume of stone from given data.

Volume of stone = (volume of water + stone ) - volume of water

Now we will put the values.

Volume of stone =  35 cm³ - 30 cm³

Volume of stone = 5 cm³

Thus the given value is true. The volume of stone is 5cm³.

Answer:

1

Explanation:

there is only one sulphur (S) atoms in the formula for sodium sulphate

The chemical formula for sodium sulfate is Na₂SO₄.One sulfur atoms are in the formula for sodium sulfate.

The term chemical formula shows the elements that create  the compound and the numbers of atoms of each element in the smallest unit of that compound, be it a molecule or a formula unit.

Chemical formulas are classified into three types: empirical, molecular, and structural.

Empirical formulas depict the simplest whole-number ratio of atoms in a compound, whereas molecular formulas depict the number of each type of atom in a molecule and structural formulas depict how the atoms in a molecule are bonded to each other.

Thus, the chemical formula for sodium sulfate is Na₂SO₄. In sodium sulphate two molecules of sodium, one atom of sulfur, and four atoms of oxygen are present.

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Answer:

1.0 g per cubic centimeter.

Explanation:

Answer:

9.876

Explanation:

Answer:

D. The government determines what is right & wrong for everyone

Explanation:

Answer:

c.

Explanation:

One of the main differences between an atom and an element is that an atom can be combined but an element cannot be combined. There are many combinations of atoms that make up different gases, liquids, and solids each with a unique makup. For example, water is made up of two hydrogen atoms and one oxygen atom (H20). Elements are made up of only the same type of atom. For example, the element Hydrogen can only contain hydrogen atoms, while the element Carbon can only contain carbon atoms.

Answer:

C = 2

D = 6

E = 1

Explanation:

just took the test :)

Answer:

12 moles O

In one mole of aluminum sulfate, Al2(SO4)3 , there are 2 moles Al atoms, 3 moles sulfur atoms, and 12 moles O atoms

Explanation:

Answer:

1...

Explanation:

thick carpet!!!Answer:

Explanation:

just got right on quiz:)

Answer:

Assuming that the frequency of a wave is 3 multiplied to 109 Hertz, then we use wave velocity over frequency. Therefore, 327 Hertz has a wavelength of approximately 917 kilometers and has a velocity of at least 300,000 kilometers per second

Explanation:

hope it helps give cronw ples

Answer:

False

Explanation:

The Universe's birth is only a theory. The theory has changed over the years, but currently the most believed theory is the Big Bang Theory. Also, there is always more to discover

Answer:

color (intensive)

density (intensive)

volume (extensive)

mass (extensive)

boiling point (intensive): the temperature at which a substance boils.

melting point (intensive): the temperature at which a substance melts.

Answer:

In atomic physics and quantum chemistry , the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6, using the notation explained below.

Explanation:

i found it on google

Answer:

To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block.

Explanation:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.

Answer:

1 closer

2 24hours

3 tidal bulges

4 in a straight line

Explanation:

Tides have been the effect of the sea with the gravitational pull of the sun and moon.

1. Earth’s tides are affected by the gravitational pull of the Sun and the Moon, but mainly the Moon because the Moon is closer to the earth.

In spite of high pull of the Sun, the distance of moon from earth results in increased effect of moon gravitational pull than Sun.

2. Each day, each coastal region on Earth experiences two high tides and two low tides in every 24 hours time period.

The daily tides has been resulted at the coast with the moon revolution around the earth's rotation.

3. This is because the gravitational attraction of the Moon creates tidal bulges on two opposite sides of the planet.

The effect of the  moon gravitational force results in the bulging or the pulling force to the sea, resulting in the diurnal tides.

4. Two spring tides occur monthly, when the Moon is in its new and full phases. During these phases, the Moon and Sun are oriented at a right angle measuring 90 degrees which gravitation pulls the water on Earth in the same direction, creating a large tidal range.

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Answer:

yess

Explanation:

Answer:

B

Explanation:

the less candy will be the smallest gerbil and the most candy will be the fatest

Answer:

A) The number of gerbils you feed

Explanation:

If you wanted to test whether eating candy made gerbils fat you would need to fluctuate the amount of candy each group receives to observe whether there was any differnce in weight

Answer:

30%

Explanation:

As the formula for finding concentration

= (mass of solute/mass of solution)×100

= (30/100)×100

= 0.3×100

= 30%

The concentration is 30%.

As the formula for finding concentration

= (mass of solute/mass of solution)×100

= (30/100)×100

= 0.3×100

= 30%

The amount of a substance, such as salt, is in a positive amount of tissue or liquid, along with blood. A substance turns into more concentrated whilst much less water is present.

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