1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexeev081 [22]
3 years ago
8

Which two elements have similar characteristics- calcium hydrogen barium silicon krypton

Physics
1 answer:
Yakvenalex [24]3 years ago
8 0

Answer:

Calcium and barium

Explanation:

Krypton is a noble gas it do not take part in any reaction its physical and chemical property does not resembles to other atoms.

Hydrogen is the reducing gas its physical and chemical property does not resembles to other atoms.

Silicon is a semiconductor its physical and chemical property does not resembles to other atoms.

Calcium and Barium are placed in the same group 2 in the periodic table . Both are alkaline earth metal.

As both element are placed in the same group they have same physical and chemical properties.

Example:

  • Electro-negativity of Calcium and barium are approximately same.
  • Both have same oxidation states +2,  both are strong basic oxide.
  • Both are present in nature in solid state.
  • Both are s- block element.

Thus, we can say Barium and Calcium have similar properties.

You might be interested in
Los resortes tienen masa, ¿El periodo y la frecuencia reales son mayores que los dados en las ecuaciones para una masa oscilante
MrRa [10]

Answer:

me no speek spanish

Explanation:

4 0
3 years ago
A car accelerates uniformly from rest to speed 6.6 m/s in 6.5 s .Find the distance the car travel during this time .​
kirill [66]

Answer:

<em>The distance the car traveled is 21.45 m</em>

Explanation:

<u>Motion With Constant Acceleration </u>

It occurs when an object changes its velocity at the same rate thus the acceleration is constant.

The relation between the initial and final speeds is:

v_f=v_o+at\qquad\qquad [1]

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

The distance traveled by the object is given by:

\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]

Solving [1] for a:

\displaystyle a=\frac{v_f-v_o}{t}

Substituting the given data vo=0, vf=6.6 m/s, t=6.5 s:

\displaystyle a=\frac{6.6-0}{6.5}

a = 1.015\ m/s^2

The distance is now calculated with [2]:

\displaystyle x=0*6.5+\frac{1.015*6.5^2}{2}

x = 21.45 m

The distance the car traveled is 21.45 m

6 0
2 years ago
Two cars are initially separated by 2500 m and traveling towards each other. One car travels at 4.5 m/s and the second car trave
mylen [45]

Answer:

714.285s

Explanation:

use relative velocity

8-4.5 = 3.5m/s

x = 2500m

2500/3.5 = 714.285s = 700s (with sig figs)

7 0
2 years ago
How much thermal energy is required to raise the temperature of 5 kg of water 50℃? The specific heat of water is 4168 J/kg*C.
sasho [114]

Answer/solution:

Given :

Mass =5kg

T 1 =20 C,T 2  =100 ∘C

ΔT=100−20=80 ∘C

Q=m×C×ΔT

where C= specific heat capacity of water

=4200J/(kgK)

Q=5×4200×80

=1680000 Joule.

=1680KJ

3 0
2 years ago
The Earth's crust is made of tectonic plates. These plates are constantly in motion. How are earthquakes related to the movement
never [62]

Answer:

I'm pretty sure it's B because I studied this topic and I'm not right I'm sorry.

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which two forms of energy does a hairdryer convert electric energy into? A.)chemical energy
    12·2 answers
  • Wave is traveling at 60 cm/second and has a wavelength of 15 cm, what is the frequency?
    10·1 answer
  • We are just a bunch of molecules that hang out together but don't touch each other. Is this believable? If this is the case, wha
    10·1 answer
  • One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the f
    11·1 answer
  • Runner 1 has a velocity of 10 m/s west. Runner 2 has a velocity of 7 m/s east. From the frame of reference of runner 2, what is
    6·1 answer
  • What's a definition of caught​
    7·1 answer
  • Match each measurement tool with what it measures.
    14·1 answer
  • An alternating source drives a series RLC circuit with an emf amplitude of 6.34 V, at a phase angle of +33.3°. When the potentia
    11·2 answers
  • Are the properties of rubidium more like those of cesium or those of strontium ? Explain your ans
    15·1 answer
  • a 2000kg car initially traveling at a speed of 15 m/s is accelerated by a constant force of 10000 n for 3 seconds. the new speed
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!