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
emmainna [20.7K]
2 years ago
8

4. The elements calcium and strontium have similar chemical properties because they both have the same

Chemistry
2 answers:
Zarrin [17]2 years ago
6 0

Answer:

Answer c

Explanation:

The similar properties between calcium, strontium and potassium are : All of them have two electrons in the outermost shell. All are metals. Their oxides are alkaline.

mestny [16]2 years ago
4 0
The answer is C Becuase all of them have have two electrons in the outermost shells which is metal .
You might be interested in
You shake a can of soda and open it, which cause the pressure to decrease. what happens to the volume of the CO2. the soda​
navik [9.2K]

Answer: <em>When you take the top off of a bottle of soda, the pressure inside the bottle decreases and goes to the same pressure as the atmosphere. When that happens the carbon dioxide inside is no longer forced to be a liquid and turns back into a gas, causing the bubbles that we're so familiar with.</em>

Explanation:

However, producing foaming carbon dioxide gas by shaking a bottle of soda water is a physical change, while producing foaming carbon dioxide gas by combining baking soda and vinegar is a chemical change. ... Because no chemical bonds are broken and no new molecules are formed, this is a physical change in the system.

4 0
3 years ago
What is a layer of solid of the solid earth<br>​
nikitadnepr [17]

The answer is The mantle

6 0
3 years ago
What would happen if I removed a resistor from a parallel circuit? What would
barxatty [35]

Answer:

In a parallel circuit, current divides through resistors and current might be different depending upon the resistor and all resistors have the same potential difference. Therefore, if a parallel resistor was removed then the total resistance of the circuit will increase.

7 0
2 years ago
in order to find the molar mass of an unknown compound, a research scientist prepared a solution of 0.930 g of an unknown in 125
PtichkaEL [24]

Answer:

Molar mass→ 0.930 g / 6.45×10⁻³ mol = 144.15 g/mol

Explanation:

Let's apply the formula for freezing point depression:

ΔT = Kf . m

ΔT = 74.2°C - 73.4°C → 0.8°C

Difference between the freezing T° of pure solvent and freezing T° of solution

Kf = Cryoscopic constant → 5.5°C/m

So, if we replace in the formula

ΔT = Kf . m → ΔT / Kf = m

0.8°C / 5.5 m/°C = m → 0.0516 mol/kg

These are the moles in 1 kg of solvent so let's find out the moles in our mass of solvent which is 0.125 kg

0.0516 mol/kg . 0.125 kg = 6.45×10⁻³ moles. Now we can determine the molar mass:

Molar mass (mol/kg) → 0.930 g / 6.45×10⁻³ mol = 144.15 g/mol

3 0
3 years ago
What are the 4 different types of chemical reactions? And how to remember them
Tju [1.3M]
<span>Synthesis, decomposition, single replacement and double replacement.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is a thermograph
    14·2 answers
  • What is the average salinity of ocean water 1. 0.345 g/kg 2. 3.45 g/kg 3. 34.5 g/ml 4. 345 g/ml?
    12·1 answer
  • Why is graphite non-malleable
    15·1 answer
  • Write the symbol for the element with 30 neutrons and a mass number of A = 56.
    8·1 answer
  • What is common to all elements in the same group in the periodic table?
    11·2 answers
  • Will baby oil and water form a solution
    9·2 answers
  • Pricing the product low in order to stimulate demand and increase the installed base, then trying to make high profits on the sa
    7·1 answer
  • The appropriate unit for a first order rate constant are​
    15·1 answer
  • It's actually Science but I didn't find it.
    7·1 answer
  • Electron dot diagram for four elements are shown. Which element would be found in Group 13?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!