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NISA [10]
2 years ago
9

According to the periodic table, which of these elements will form an ion with a –2 charge? calcium

Chemistry
1 answer:
Serga [27]2 years ago
6 0

Answer:

hfjfuufhdhdhjdjdjjdjjdudjfjfjjfjfjjfjf

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How many kL does a 9.51 ´ 109 cL sample contain?
elena-14-01-66 [18.8K]

Answer:

9.51 × 10⁴ kL

Explanation:

Step 1: Given data

Volume of the sample (V): 9.51 × 10⁹ cL

Step 2: Convert "V" to liters

We will use the conversion factor 1 L = 100 cL.

9.51 × 10⁹ cL × (1 L / 100 cL) = 9.51 × 10⁷ L

Step 3: Convert "V" to kL

We will use the conversion factor 1 kL = 1000 L.

9.51 × 10⁷ L × (1 kL / 1000 L) = 9.51 × 10⁴ kL

9.51 × 10⁹ cL is equal to 9.51 × 10⁴ kL.

4 0
3 years ago
Can light move through space even though there are no molecules?
amid [387]

Answer:

This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...

7 0
3 years ago
what does ice cream melt on a hot day which type of thermal energy transfer does this melting represents
Rzqust [24]
Because the coldness in  the ice cream and the suns gamma rays are hitting the ice cream and then it will start to melt. and that is why ice cream melts.
6 0
3 years ago
When the reaction
yaroslaw [1]
We can express the rate equation in this form:
-r = k A^n B^m

where -r is the rate
k is the rate constant,
A is the concentration of CH3Cl
n is the order with respect to CH3Cl
B is the concentration of H2O
m is the order with respect to H2O

We can solve this by trial and error or by calculus. The first method is easier. The rate constant does not depend on the concentration of the reactant. Assume values of n and m and solve for k in each experiment. The only option that gives really close values of k in each experiment is:
<span>C. CH3Cl: firstorder H2O: second order
</span>
3 0
3 years ago
Burning wood in a fireplace is an example of what kind of energy conversion?
S_A_V [24]

Answer:

A. because the wood is stored chemical energy and it is converting into heat energy

8 0
3 years ago
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