All categories

3 years ago

Name two elements that you would expect to have properties very much like those of calcium

Chemistry

1 answer:

Semmy [17]3 years ago

7 0

Beryllium, magnesium, strontium, barium, or radium. Hope this helped :))

You might be interested in

Please help, will mark brainliest

Nookie1986 [14]

Answer:

Hhsawkjfjdwkqkaopwpwowiwowwowlwppqpqwjehdjw

8 0

3 years ago

Drag the images into the correct category. Contact Forces Noncontact Forces

Nitella [24]

Answer:

Where are the categories, we need an image for reference or something to better understand the question

8 0

2 years ago

In an experiment between 26.4 grams of Mg and O,, Mgo is produced. The percent

andrew11 [14]

Answer:

39.6 g

Explanation:

The equation of the reaction is;

2Mg(s) + O2(g) --------> 2MgO(s)

To obtain the limiting reactant;

Number of moles in 26.4 g of Mg = 26.4g/24 g/mol = 1.1 moles

If 2 moles of Mg yields 2 moles of MgO

1.1 moles of Mg yields 1.1 * 2/2 = 1.1 moles of MgO

Number of moles in 26.4 g of O2 = 26.4 g/32g/mol = 0.825 moles

If 1 mole of O2 yields 2 moles of MgO

0.825 moles of O2 yields 0.825 moles * 2/1 = 1.65 moles of MgO

Hence Mg is the limiting reactant.

Theoretical yield of MgO = 1.1 moles of MgO * 40 g/mol = 44 g

Percent yield = 90%

Percent yield = actual yield/theoretical yield * 100

Actual yield = Percent yield * theoretical yield/100

Actual yield = 90 * 44/100

Actual yield = 39.6 g

7 0

3 years ago

in terms of amounts of energy and harmful radioactive waste produced , which of the following is the most accurate comparison of

Eddi Din [679]

Explanation:

Nuclear fusion produces more energy with less radioactive waste compared to nuclear fission process.

In nuclear fission, a radioactive decay occurs in which a heavy nucleus spontaneously disintegrates into two lighter nuclei and several neutrons with the release of energy.
Nuclear fusion occurs when small atomic nuclei combines into larger ones with the release of a large amount of energy.
Instability of a nuclide is enough to start up a nuclear fission reaction. In some instances, a heavy nuclide is bombarded with another nuclide.
In nuclear fusion, the activation energy required to start up is very great.

Nuclear wastes emanating from nuclear fusion process is least compared to that of nuclear fission.

Nuclear fusion produces more energy compared to nuclear fission process.

Learn more:

Nuclear reaction brainly.com/question/10094982

#learnwithBrainly

3 0

3 years ago

Na + Cl --> NaCl

dalvyx [7]

Answer:

38.152 g NaCl would be produced.

Explanation: