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Inessa05 [86]
3 years ago
12

Which elements have similar chemical properties? Check all that apply. Barium, beryllium, rubidium, radium, titanium, calcium, p

latinum
Chemistry
2 answers:
Gnesinka [82]3 years ago
6 0

Barium

Beryllium

Radium

Calcium


HACTEHA [7]3 years ago
5 0
Barium, Beryllium, Radium and Calcium because they're alkaline earth metals
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Which statement is true about sand and baking soda? Both are mixtures. Both are pure substances. Sand is a mixture and baking so
NikAS [45]
Both are mixtures, sand is made of all different substances combined together and baking soda is sodium, hydrogen, and carbonate.
8 0
3 years ago
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Given the balanced equation: 2KClO3 -->2KCl + 3O2
RSB [31]

Answer:

Option a → 111.9 g

Explanation:

The reaction is this:

2KClO₃  →  2KCl  +  3O₂

2 moles of chlorate decompose to 2 moles of chloride and 3 moles of oxygen. Ratio is 2:2.

If I use 1.5 moles of chlorate I'll get the same moles of chloride by the decomposition.

Let's convert the moles to mass: 1.5 mol . 74.6 g / 1mol = 11.9 g

6 0
3 years ago
What forces are acting on a book sitting on a table? Are action-reaction forces involved in this situation?
saw5 [17]

Answer:

  • Gravitational force
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Explanation:

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3 0
3 years ago
1.the volume of air in a mountain bicycle tire is constant. the initial pressure and temperature are 3.14 atm and 26 degrees cel
sattari [20]

Answer:

Explanation:

Givens

P1 = 3.14 atm

T1 = 26 + 273 = 299

P2 = 3.96

T2 = ?

Equation

P1 / T1 = P2 / T2

Solution

3.14 / 299 = 3.96 / x                   Cross multiply

3.14 x = 299 * 3.96                     Divide by 3.14

x = 299*3.96 / 3.14

x = 1184.04/3.14

x = 377.08 oK                             Take off 273 to get the degrees Centigrade.

x = 104.08 oC

Part B

If you want the temperature to increase, the relationship is a direct  one. That means as the temperature goes up, the pressure will as well. So for a bicycle, it makes sense that the volume remains constant. That makes the formula above without volume because the volume would cancel out on both sides of the equation.

So as the pressure increases, the particles making up the air begin to respond by the molecules moving faster. Temperature really is the a measurement of how fast molecules are moving. So the momentum is increasing. When the particles hit something, it is with a much greater force and that increases the apparent pressure.

3 0
3 years ago
What are the 5 forces that cause erosion?
Vikentia [17]
Gravity, running water (rivers, etc.), wind, waves,and glaciers.
3 0
3 years ago
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